According to your best estimate, how far is the nearest extraterrestrial intelligence?

Llama 4 Scout

Vote: 10 million to 10 billion lightyears

The search for extraterrestrial intelligence (SETI) has yet to yield definitive results, but the vastness of the universe suggests that intelligent life could be widespread. However, the distances between stars and galaxies are enormous. Given that we have not yet detected any clear signals from extraterrestrial intelligence, it is reasonable to assume that the nearest intelligent life might be far enough to be beyond our immediate galactic neighborhood but not so distant that it approaches the scale of the observable universe. Option G, 10 million to 10 billion lightyears, seems a reasonable estimate considering the scale of the universe and the current limits of our detection capabilities.

Qwen 3 235B

Vote: 1000 to 10000 lightyears

The nearest extraterrestrial intelligence, if it exists, is likely beyond the immediate stellar neighborhood but still within our galactic vicinity. Current exoplanet data suggests that Earth-like planets are relatively common, but the emergence of intelligent, technologically advanced life remains highly uncertain. The Fermi Paradox highlights the tension between high probability of alien life and the lack of evidence. This suggests that intelligent civilizations may be rare, widely separated, or short-lived. If they do exist, they are probably not so close that we would have already detected them through signals or artifacts. A distance of 1000 to 10000 lightyears balances these considerations. It is far enough to explain the absence of contact, yet close enough that such civilizations could still reside within the more habitable zones of the Milky Way. This scale also aligns with the portion of the galaxy we have modestly surveyed via radio astronomy and exoplanet detection.

DeepSeek V3

Vote: 100 to 1000 lightyears

The Fermi Paradox suggests that intelligent life should be common, yet we see no evidence of it. This implies that either intelligent life is rare or that it is distant. Given the vast number of stars in our galaxy (100-400 billion), and the fact that many are older than our sun, it's plausible that intelligent life exists but is not nearby. The 100 to 1000 lightyear range balances the likelihood of intelligent life existing in our galaxy with the absence of detectable signals. This range is close enough that we might eventually detect signs of intelligence, but far enough to explain why we haven't yet.

Phi-4 Multimodal

Vote: 100 thousand to 10 million lightyears

Given the current technological capabilities and the vastness of the Milky Way alone, which spans approximately 100,000 light-years, it is plausible that if extraterrestrial civilizations exist, they could be within this galaxy. The Drake equation suggests a number of such civilizations could potentially exist, but given the vast distances involved, it's important not to extrapolate too far beyond our galaxy. While the optimistic extremophiles hypothesis and the Fermi paradox encourage thinking about civilizations further out, the most credible current estimate places the nearest intelligent life within our milky way at around 100 thousand to 10 million lightyears, considering we have yet to detect any signals. This also accounts for the Great Silence that implies if the Fermi paradox holds (i.e., given the high probability of extraterrestrial life, we shouldn't have encountered them yet).

Gemini 2.0 Flash

Vote: 10000 to 100000 lightyears

While there's no definitive evidence of extraterrestrial intelligence, the sheer size and age of the universe suggest it's plausible. Given the vast distances between stars and galaxies, it's more probable that any intelligent life would be located at a significant distance. Options A-D seem overly optimistic, considering we haven't detected any signals from nearby stars despite decades of searching. Option F-H would imply that intelligent life is incredibly rare or that galaxy formation is required. Therefore E is the most reasonable bet.

Llama 3.3 70B

Vote: 1000 to 10000 lightyears

Estimating the distance to the nearest extraterrestrial intelligence is highly speculative due to the lack of concrete evidence. However, considering the vast number of potentially habitable exoplanets discovered in recent years, it's plausible to assume that intelligent life could exist within a few thousand lightyears. The distance of 1000 to 10000 lightyears seems a reasonable estimate, given the balance between the likelihood of intelligent life existing elsewhere and the limitations imposed by our current understanding of interstellar travel and communication.

GPT-5.4

Vote: 10-100 lightyears

My best estimate is that the nearest extraterrestrial intelligence is likely within our galactic neighborhood, but not necessarily very close. A rough Fermi-paradox style estimate puts it somewhere in the tens to hundreds of lightyears range. Less than 10 lightyears seems too optimistic given that no confirmed nearby technological signals have been found so far, while distances beyond 100 lightyears start to feel less likely if intelligent life is at all moderately common in the Milky Way.

Nemotron Nano 12B

Vote: more than 10 billion lightyears

The vastness of the observable universe suggests that life could be common, but the distances required to reach another civilization are immense. While some habitable exoplanets exist within a few tens to hundreds of lightyears, the absence of confirmed detections of extraterrestrial intelligence (which implies that distances are either prohibitive or our methods are insufficient), combined with the feasibility of communication and travel challenges, makes it more plausible that the nearest intelligent life exists beyond our immediate cosmic neighborhood. Current technology and observational limits (e.g., Fermi Paradox implications) support the conclusion that detectable signals would originate from extremely distant locations.

Mixtral 8x22B

Vote: 1000 to 10000 lightyears

Given our current understanding of the universe and the factors that contribute to the emergence of life and intelligence, it is most likely that the nearest extraterrestrial intelligence is located between 1000 to 10000 lightyears away. This estimation considers that life has already formed in nearby star systems, but acknowledges the vast distances involved in interstellar travel. It also takes into account that the universe is approximately 13.8 billion years old, providing ample time for life to develop elsewhere.

Mistral Small

Vote: 10-100 lightyears

The Fermi Paradox highlights the contradiction between the high probability of extraterrestrial civilizations existing and the lack of evidence for them. Given the vastness of the Milky Way alone (100,000 light-years across), the nearest intelligent civilization is likely to be within our galaxy but not in our immediate stellar neighborhood. Proxima Centauri, the closest star to our Sun, is about 4.24 light-years away. While no confirmed extraterrestrial intelligence exists there, statistical models (e.g., the Drake Equation) suggest that even a conservative estimate of habitable planets (e.g., 1 in 10 stars hosting a civilization) would place the nearest one within 10-100 light-years. This aligns with the 'optimistic' Fermi Paradox resolution: intelligent life is rare but not impossibly distant. Current exoplanet discoveries (e.g., TRAPPIST-1, 40 light-years away) further support the plausibility of nearby intelligent life, even if we haven’t detected signals yet. The absence of evidence isn’t evidence of absence, especially given our limited search capabilities.

GPT-4.1

Vote: 100 to 1000 lightyears

The nearest extraterrestrial intelligence is likely to be quite far, given our lack of direct evidence despite surveys of thousands of nearby stars. Statistical models like the Drake Equation suggest that intelligent life could exist in our galaxy, but not necessarily close by. If intelligence is rare, the nearest could easily be hundreds or thousands of lightyears away. However, the probability that it's within our local region (less than 100 lightyears) is very low, considering the vast distances and the number of star systems yet unexplored. Option C (100 to 1000 lightyears) represents a plausible compromise: distant enough to reflect probable rarity, but still within the Milky Way and close enough to fit within some optimistic scenarios.

Nova Pro

Vote: 10-100 lightyears

The nearest stars to our solar system are within 10 light years, such as Proxima Centauri. If extraterrestrial intelligence exists, it is reasonable to assume that it could be within this proximity, given the vast number of stars and potential habitable planets. However, due to the limitations of our current technology and the vastness of space, it is also plausible that the nearest intelligence could be farther, but not excessively so. Therefore, an estimate within 10-100 light years seems a balanced guess.

Arcee Trinity Mini

Vote: more than 10 billion lightyears

Based on current scientific understanding and the lack of confirmed extraterrestrial signals, the nearest intelligent civilization is likely beyond 10 billion lightyears. The Fermi Paradox highlights the contradiction between the high probability of extraterrestrial life and the absence of evidence. Given our limited detection capabilities and the vast distances involved, it's reasonable to conclude that any nearby civilizations would be too distant for us to detect with existing technology. This aligns with the most conservative estimate in the provided options.

GPT-3.5 Turbo

Vote: 1000 to 10000 lightyears

My vote is for option D: 1000 to 10000 lightyears. This choice is based on the vastness of our universe and the principles of the Fermi paradox. Given the vast number of stars and galaxies in the observable universe, it is statistically probable that extraterrestrial intelligence exists somewhere. However, the distance between star systems and galaxies makes direct contact extremely challenging. With our current technological capabilities, reaching even the nearest star system would take decades or centuries. Therefore, it is reasonable to estimate that the nearest extraterrestrial intelligence could be within the range of 1000 to 10000 lightyears.

GPT-4o

Vote: 100 to 1000 lightyears

Considering the vast number of stars and the potential for life-sustaining planets in our galaxy, it seems plausible that intelligent life could exist within 100 to 1000 lightyears. The Milky Way alone contains over 100 billion stars, many of which have planets in the habitable zone. Given current estimates and the lack of detected signals, it's prudent to hypothesize that intelligent life might not be in immediate proximity but still within our galaxy, which spans about 100,000 lightyears. Thus, 100 to 1000 lightyears strikes a balance between pessimism about the rarity of life and optimism based on the sheer number of potential habitats.

Grok 3

Vote: 10000 to 100000 lightyears

I estimate the nearest extraterrestrial intelligence to be between 10,000 to 100,000 lightyears away, which corresponds to option E. This range is based on the vast size of the Milky Way galaxy, which spans about 100,000 lightyears in diameter. Given that our solar system is just one of billions of systems in the galaxy, the likelihood of intelligent life being extremely close (within 10 or even 100 lightyears) seems low due to the sheer scale and the rarity of conditions necessary for intelligent life to develop. Furthermore, while programs like SETI have searched for signals within closer ranges (less than 1,000 lightyears) with no confirmed results, it suggests that intelligent, communicative life may not be in our immediate vicinity. However, within the broader scope of our galaxy (up to 100,000 lightyears), the probability increases due to the number of potentially habitable systems. Beyond 100,000 lightyears, we start looking at other galaxies, and the likelihood of detecting or estimating intelligence at such distances becomes even more speculative without concrete evidence. Thus, E strikes a reasonable balance between probability and galactic scale.

Sonar Pro

Vote: 10000 to 100000 lightyears

The most recent and specific scientific estimate from multiple sources (2025 research by Scherf and Lammer, presented at EPSC-DPS2025) places the nearest technological extraterrestrial intelligence at approximately 33,000 light-years away[1][2][3]. This falls squarely within option **E** (10,000 to 100,000 light-years). This estimate accounts for stringent planetary requirements like plate tectonics and specific N2-O2 atmospheres with balanced CO2, combined with the need for civilizations to persist 280,000+ years to overlap with humanity temporally. It implies ETIs are rare in the Milky Way (Sun at ~27,000 ly from center, so nearest likely opposite side)[1]. Nearby potentially habitable exoplanets like Proxima Centauri b (4.24 ly) exist[4], but lack evidence of intelligence and do not contradict the intelligence-specific models. No search results suggest closer intelligences; older or general studies are less precise[5][6]. Given no detections despite SETI efforts and this authoritative, peer-reviewed modeling, **E** is the best-supported estimate.

Qwen 3 Coder 480B

Vote: 10000 to 100000 lightyears

Based on our current understanding of astrobiology and the prevalence of potentially habitable planets, the nearest extraterrestrial intelligence is likely much farther than commonly assumed. Our galaxy alone contains billions of stars, many with planetary systems in habitable zones. The emergence of intelligence appears to require specific conditions - not just liquid water, but also stable environments over geological timescales, appropriate atmospheric compositions, and protective magnetic fields. Even on Earth, complex multicellular life took billions of years to develop intelligence. Considering the vast number of potentially habitable worlds within our galaxy, and assuming intelligence emerges rarely but inevitably given enough time and suitable conditions, the statistical likelihood suggests civilizations would be separated by tens of thousands of lightyears rather than closer distances. This estimate accounts for both the rarity of intelligence and the enormous scale of our galaxy, placing the nearest civilization likely between 10,000 and 100,000 lightyears away.

Claude Haiku 4.5

Vote: 100 thousand to 10 million lightyears

This question requires balancing several competing considerations. The Drake Equation suggests the number of communicative civilizations depends on factors like the rate of star formation, fraction of stars with planets, fraction of habitable planets, and crucially, the longevity of civilizations. Most estimates suggest such civilizations are rare. Given that we've detected no confirmed signals in ~70 years of searching (despite monitoring only a tiny fraction of the sky), this suggests either: (1) intelligent life is extremely rare, (2) the great filter lies ahead of us, or (3) we're among the first in our cosmic neighborhood. If intelligent life emerges in perhaps 0.1% of star systems and requires billions of years to develop, the nearest civilization is likely quite distant. Options A-E (under 100,000 lightyears) seem optimistically close given these constraints. Our galaxy is ~100,000 lightyears across. If a civilization requires random emergence across galactic timescales, spacing them at roughly intergalactic distances seems plausible. Option F (100 thousand to 10 million lightyears) bridges the gap between our galaxy and nearby galaxies—a reasonable middle estimate that acknowledges both the rarity of life and the vastness of space without being excessively pessimistic. Options G-H assume either extreme rarity or that the Fermi Paradox has a very pessimistic resolution. Option F represents a moderate, empirically-grounded estimate.

GPT-5.4

Vote: 10000 to 100000 lightyears

My best estimate is E: somewhere else in our galaxy, but not nearby. The key uncertainty is not whether habitable planets exist—they seem common—but how often life becomes intelligent and technologically detectable. The silence of SETI and the lack of any clear evidence in the Solar System suggest such civilizations are rare. If technological intelligence were common on scales of tens to hundreds of lightyears, we might expect stronger signs by now, at least in radio leakage or obvious astroengineering. That pushes my estimate beyond options A through D. But jumping to other galaxies also seems too pessimistic. The Milky Way has hundreds of billions of stars, so even a very low probability per star can still yield multiple civilizations in one galaxy. That makes a nearest-neighbor distance on the order of tens of thousands of lightyears plausible. So 10,000 to 100,000 lightyears is the most balanced estimate: rare enough to explain the silence, but not so rare that intelligence exists only beyond the Milky Way.

O3

Vote: 1000 to 10000 lightyears

1. Empirical silence: 60+ years of sensitive radio surveys (e.g. Breakthrough Listen, SETI Institute) have seen no unambiguous technosignatures out to ~100 ly for A-class solar-type stars. This makes options A and B increasingly unlikely for a radio-using civilization. 2. Statistical Drake-style estimates: If the Milky Way hosts ~100–10000 concurrent technological civilizations, the mean separation between them is typically 1–10 kpc (3 000–30 000 ly). Even optimistic recent Bayesian fits (e.g. Sandberg et al. 2018) center on a few thousand light-years. 3. Galactic habitability constraints: The stellar density, metallicity gradient, and supernova frequency imply the Galactic Habitable Zone is an annulus 6–10 kpc from the center—where the Sun lies. That zone’s circumference contains order-of-magnitude 100 000 star systems; a handful hosting intelligence naturally yields separations of a few thousand light-years. 4. Fermi-paradox consistency: Civilizations closer than ~1000 ly with expansionist tendencies should have left detectable astro-engineering or probes by now. Their absence nudges the distance estimate upward but still within the Milky Way. Combining these lines, the most plausible interval is 1 000–10 000 ly, i.e., option D.

O4 Mini

Vote: 100 to 1000 lightyears

Applying a rough Drake‐equation approach: if even a conservative fraction of the Milky Way’s ~10^11 stars host communicative civilizations, their galactic density implies mean separations on the order of 10^2–10^3 light‐years. We’ve surveyed nearby space for decades without a confirmed signal, which disfavors extremely close neighbors (<10–100 ly) but still allows ratings in the 100–1000 ly window. This range balances the large number of potential habitats in our galaxy against the lack of detections so far.

GPT-5.2

Vote: 1000 to 10000 lightyears

We have no confirmed detections of extraterrestrial technological civilizations nearby despite decades of radio/optical SETI searches, which strongly suggests there is not an active, highly radio-loud civilization within ~10–100 lightyears. At the same time, the Milky Way is large (~100,000 lightyears across) and old, and even conservative versions of the Drake equation allow for some nonzero number of technological species over Galactic history. If such civilizations are rare in space and time, the nearest one (if it exists now) is plausibly thousands of lightyears away. Distances beyond ~10,000 lightyears start to imply either extreme rarity (pushing toward “one or none” in the entire Galaxy) or that most intelligence is non-technological/undetectable. A middle estimate of 1,000–10,000 lightyears best matches current non-detections plus the Galaxy's size and plausible rarity.

GLM 4.7

Vote: 100 to 1000 lightyears

My estimate for the distance to the nearest extraterrestrial intelligence falls within 100 to 1,000 light-years based on several key considerations. First, while our galaxy contains potentially billions of habitable planets, the Fermi Paradox suggests detectable civilizations are not extremely common. The nearest stars (<10 lightyears) have been studied extensively with no unambiguous signs of intelligence detected. At the same time, the sheer scale of the universe makes it statistically unlikely that we're completely alone in our galaxy. If intelligent civilizations are rare or short-lived, the nearest one might be hundreds of lightyears away—a distance where detecting their non-directed communication would be significantly more challenging for our current technology. This estimate balances the enormous number of opportunities for life to emerge throughout cosmic history with our observational reality of detecting nothing definitive so far.

Mistral Large

Vote: 100 to 1000 lightyears

The Drake Equation provides a framework for estimating the number of communicative civilizations in our galaxy. While the equation's parameters are highly uncertain, reasonable estimates suggest there could be a handful of such civilizations in the Milky Way. Given the galaxy's diameter of about 100,000 lightyears, even a small number of civilizations would likely be spread out over significant distances. Current astronomical observations have not detected any definitive signs of extraterrestrial intelligence within 100 lightyears. Projects like SETI have scanned nearby star systems without success, which makes option A (less than 10 lightyears) unlikely. The lack of evidence for intelligence in our immediate stellar neighborhood also makes option B (10-100 lightyears) less probable, though not impossible. Considering the vast number of stars in our galaxy (100-400 billion), and assuming intelligence is relatively rare but not unique to Earth, a distance of 100 to 1000 lightyears (option C) seems plausible. This range balances the rarity of intelligence with the sheer scale of the galaxy. It is large enough to account for the lack of detected signals or artifacts from extraterrestrial civilizations while still being within the Milky Way, where we would expect such civilizations to exist. Options D and beyond imply distances that would make communication or detection extremely difficult, if not impossible, with our current technology. While it is possible that the nearest intelligence is farther away, the lack of evidence and the sheer scale of the galaxy make closer distances more probable.

GPT-5.1

Vote: 100 to 1000 lightyears

Given current exoplanet statistics, there appear to be billions of Earth-sized planets in habitable zones across the Milky Way. If the emergence of life and intelligence is moderately rare but not astronomically so, we would expect at least some technological civilizations scattered through the Galaxy. The Galaxy is about 100,000 lightyears across. If there are, say, thousands to millions of technological civilizations spread over this volume (a common mid-range of many Drake-equation style estimates), the typical separation between them would plausibly fall in the hundreds to low thousands of lightyears, not just a few lightyears and not tens of millions. Stronger clustering at the very near distances (A or B) seems unlikely because (1) we see no obvious technosignature beacons or megastructures nearby and (2) the local 10–100 lightyear neighborhood contains relatively few Sun-like stars and known terrestrial planets. But pushing the nearest intelligence to >1000 lightyears (D or beyond) assumes either that intelligent life is extremely rare or that most civilizations are extraordinarily short-lived or quiet. Balancing these considerations, the most defensible single bin is 100–1000 lightyears: far enough that we wouldn’t easily have noticed them yet with our limited searches, but close enough to be consistent with a Galaxy where technological civilizations exist but are not extraordinarily common.

Grok 4 Fast

Vote: 10000 to 100000 lightyears

The Milky Way galaxy spans about 100,000 lightyears in diameter. Conservative estimates from the Drake Equation suggest there may be only a handful of advanced civilizations in our galaxy, implying the nearest one is likely tens of thousands of lightyears away. Given the lack of detected signals from SETI efforts targeting nearby stars, the distance is probably not within a few thousand lightyears, but still within the galaxy rather than intergalactic scales. This places the best estimate in the 10,000 to 100,000 lightyear range, corresponding to option E.

Grok 4.20

Vote: 1000 to 10000 lightyears

The Fermi paradox highlights that we see no evidence of nearby advanced civilizations despite the vast number of stars in the Milky Way. Conservative estimates from the Drake equation suggest intelligent life is rare, likely resulting in only a few civilizations per galaxy. This points to the nearest one being thousands of lightyears distant, beyond the range of current SETI searches but still within our galaxy.

Sonar Reasoning Pro

Vote: 10000 to 100000 lightyears

Recent research presented at the Europlanet Science Congress (October 2025) by the Austrian Academy of Sciences provides the most current estimate. Researchers Scherf and Lammer calculated that the nearest technological civilization in the Milky Way is likely approximately 33,000 light years away[1][2][4]. This estimate falls within the E range (10,000-100,000 lightyears). Their analysis considered the rarity of conditions necessary for advanced life: planets must have plate tectonics, a nitrogen-oxygen atmosphere, and the right balance of carbon dioxide and oxygen. Additionally, for a civilization to overlap with ours in time, it would need to persist for at least 280,000 years[1][2]. These stringent requirements make extraterrestrial intelligences substantially rarer than earlier Drake equation models suggested. While older theoretical work suggested optimistic scenarios with nearest civilizations at distances of a few thousand light years[3], the 2025 research applies more conservative and evidence-based planetary habitability constraints. The 33,000 light-year estimate places the nearest ETI on the opposite side of the Milky Way from Earth[1].

Claude Opus 4.5

Vote: 10000 to 100000 lightyears

My estimate centers on the range of 10,000 to 100,000 lightyears, roughly within our own Milky Way galaxy. The Drake Equation, despite its uncertainties, suggests that intelligent civilizations could exist within our galaxy. With approximately 100-400 billion stars in the Milky Way and a significant fraction having potentially habitable planets, the emergence of intelligence somewhere in our galaxy seems plausible. However, the Fermi Paradox and the Great Silence constrain optimistic estimates. If intelligence were extremely common (every few hundred lightyears), we would likely have detected signals by now. The lack of detection suggests either intelligence is rare, short-lived, or doesn't broadcast in detectable ways. A middle-ground estimate places the nearest intelligence at galactic scales but not intergalactic. This accounts for: (1) the apparent rarity suggested by our failure to detect signals, (2) the vast number of stars making some other intelligence probable within our galaxy, and (3) the enormous timescales involved in evolution that might limit how many civilizations exist simultaneously. Option E (10,000-100,000 lightyears) represents a reasonable balance - rare enough to explain the silence, but acknowledging the galaxy's billions of potential sites for life over billions of years. This distance also means any signals would take tens of thousands of years to reach us, explaining why two-way communication hasn't occurred.

Gemini 3 Flash

Vote: 10000 to 100000 lightyears

Based on current astronomical data and the 'Great Silence' (the Fermi Paradox), it is statistically likely that technological civilizations are sparse. While the Milky Way contains billions of Earth-sized planets in habitable zones, the lack of detected technosignatures within our immediate stellar neighborhood suggests that intelligence is not a common occurrence. Recent probabilistic models, such as the 'Astrobiological Copernican Limit,' estimate that there could be roughly 30 to 40 active communicating civilizations in our galaxy. In a disk as vast as the Milky Way (100,000 lightyears across), a population of this size results in an average distance of approximately 17,000 lightyears between neighbors. Option E (10,000 to 100,000 lightyears) represents the most realistic 'middle ground.' It acknowledges that while life may be rare enough to explain why we haven't been visited or contacted yet, the sheer number of habitable worlds makes it unlikely that we are entirely alone in the galaxy. This range places the nearest intelligence within our own galactic disk but far beyond our current observational reach.

Magistral Small

Vote: 1000 to 10000 lightyears

The Milky Way is vast, spanning 100,000 lightyears, making it plausible that intelligent life, if it exists, could be thousands of lightyears away. Current SETI efforts have not detected any clear signals, suggesting that intelligent life is not within 100 lightyears or not communicating in detectable ways. Conservative estimates from the Drake Equation and the Fermi Paradox support the idea that the nearest intelligent life is likely several thousand lightyears away, placing it within the 1000 to 10000 lightyears range.

Claude Sonnet 4.6

Vote: 10 million to 10 billion lightyears

This is fundamentally a Drake Equation / Fermi Paradox estimation problem. Let me reason through the key factors: **The observable universe is vast**: There are roughly 2 trillion galaxies, each with hundreds of billions of stars. The sheer scale makes it statistically implausible that intelligence is unique to Earth — but that doesn't mean it's nearby. **The Fermi Paradox is the key constraint**: If intelligent civilizations were common within our galaxy (~100,000 light-years across), we would likely have detected some signal or artifact by now. The silence strongly suggests technological civilizations are extremely rare within the Milky Way. This argues against options A through E. **Rare Earth / Great Filter considerations**: The conditions for complex life may be extremely restrictive — stable long-lived stars, metal-rich systems, plate tectonics, large moons, Jupiter-like shields, just the right evolutionary luck. The emergence of intelligence may require billions of sequential improbable steps. This pushes the nearest intelligence to extragalactic distances. **Best estimate range**: If civilizations arise at a rate of roughly 1 per galaxy per billion years (a conservative but reasonable estimate given we have only one confirmed example), and galaxies are typically separated by millions of light-years, then the nearest intelligence is most likely somewhere in the range of tens of millions to billions of light-years away — firmly in the G range (10 million to 10 billion light-years). **Why not H?**: With 2 trillion galaxies in the observable universe, even very low probabilities still suggest intelligence exists somewhere within the observable universe, placing the nearest example within 10 billion light-years.

Claude Opus 4.6

Vote: 1000 to 10000 lightyears

This is inherently speculative, but we can reason through it using Drake Equation-style logic and what we know about the galaxy. The Milky Way contains roughly 100-400 billion stars spread across ~100,000 lightyears. There are billions of potentially habitable planets. The key uncertainty is how often intelligence arises on habitable worlds. If we take a moderately optimistic view — that intelligent life is rare but not astronomically so — we might estimate somewhere between a few hundred and a few thousand civilizations in our galaxy at any given time. This is consistent with middle-ground estimates from the Drake Equation and more recent statistical analyses. With, say, ~1,000 civilizations spread across the Milky Way's disk (~100,000 lightyears across), the average nearest-neighbor distance would be on the order of a few thousand lightyears. The stellar density is higher near the galactic center, so depending on location, the nearest civilization could be closer or farther. Option A and B seem far too optimistic — there are very few star systems within 100 lightyears, and none have shown signs of intelligence despite significant observation. Option C is possible but requires a fairly high density of civilizations. Options E and F start to imply either extreme rarity (only a handful in the galaxy or none at all). Options G and H essentially mean we're alone in the galaxy and must look to other galaxies, which represents an extremely pessimistic view. The range of 1,000-10,000 lightyears (option D) represents a reasonable middle ground: intelligence exists in the galaxy but is uncommon enough that the nearest example is distant enough to explain why we haven't detected signals yet, while still being consistent with a galaxy that hosts multiple civilizations.

Grok 4

Vote: 1000 to 10000 lightyears

The Milky Way galaxy spans about 100,000 lightyears and contains hundreds of billions of stars, many with potentially habitable planets. Estimates from the Drake equation suggest there could be dozens to thousands of intelligent civilizations in our galaxy, implying the nearest might be thousands of lightyears away. No detections from SETI searches within hundreds of lightyears support that it's not extremely close, but the galaxy's size makes 1000-10,000 lightyears a reasonable best estimate for the nearest extraterrestrial intelligence.

MiniMax M2.5

Vote: 1000 to 10000 lightyears

Given the lack of confirmed detections of extraterrestrial intelligence despite decades of searching (SETI), combined with the vastness of our galaxy and the Fermi Paradox (if intelligent life were common, we should have seen evidence), a reasonable estimate for the nearest intelligent civilization is in the range of 1000-10000 light-years. We have only searched a tiny fraction of nearby space with radio telescopes, and the closest potentially habitable exoplanets we know of (like Proxima Centauri b at 4.2 light-years) show no signs of technology. If intelligent life is rare but distributed throughout the Milky Way, the average distance could plausibly be thousands of light-years. This range balances the possibility that such civilizations exist with the observed absence of contact or detectable signals from our cosmic neighborhood.

DeepSeek V3.2

Vote: 100 to 1000 lightyears

The Drake equation estimates that there could be anywhere from a few to many communicative civilizations in our galaxy. Given the Milky Way's diameter of about 100,000 lightyears, if civilizations are moderately common, the nearest one likely falls within a few hundred to a thousand lightyears. SETI searches have not yet detected any confirmed signals, suggesting that civilizations are not extremely abundant or close. However, this absence does not rule out distances in the hundred to thousand lightyear range, as our searches have only covered a tiny fraction of the sky and frequency spectrum. Balancing the vastness of space with the potential for intelligence to arise, 100 to 1000 lightyears is a plausible estimate. It allows for civilizations to exist without being so near that we should have already observed them, aligning with current astronomical understanding.

GLM 5

Vote: 1000 to 10000 lightyears

The Fermi Paradox remains our strongest constraint on this question. Despite decades of SETI searches, we have detected no technosignatures from nearby star systems. If intelligent civilizations were common within 100 lightyears, we would likely have found some evidence by now. Current Drake Equation estimates, incorporating Kepler mission data on exoplanet frequency, suggest somewhere between a handful to thousands of intelligent civilizations in our galaxy. Even the optimistic estimates from researchers like Conselice suggest roughly 36 active communicating civilizations, which would place the nearest at roughly 17,000 lightyears. More pessimistic estimates push this considerably further. However, I select option D (1000-10000 lightyears) rather than more distant options because our galaxy contains 100-400 billion stars, and recent discoveries suggest habitable-zone rocky planets are quite common. The apparent rarity of intelligence may be partly due to the relatively brief window civilizations have to develop detectable technology. A distance of a few thousand lightyears balances the apparent scarcity implied by the Fermi Paradox against the statistical probability that intelligence has arisen multiple times in a galaxy this large and ancient.

Kimi K2.5

Vote: 1000 to 10000 lightyears

Based on the Drake equation and current non-detection of signals, technological civilizations appear to be rare. With hundreds of billions of stars in the Milky Way, if intelligent life emerges only occasionally—perhaps once per million stars or less—the statistical average distance to the nearest neighbor would likely fall in the thousands of light-years range. This estimate reconciles the Fermi paradox (why we haven't detected anyone yet) with the vast scale of the galaxy. Closer options (A-C) are improbable given extensive SETI surveys and the sheer improbability of intelligent life being that common, while intergalactic distances (F-H) are less likely given the extreme sparsity of stars between galaxies compared to within them.

DeepSeek V3.1

Vote: 100 to 1000 lightyears

The Drake Equation, while highly uncertain, suggests that the number of communicative civilizations in our galaxy could be in the thousands. With the Milky Way being approximately 100,000 light-years in diameter and containing an estimated 100-400 billion stars, even a sparse distribution of intelligent life implies that the nearest one is likely within a few hundred to a thousand light-years. Observational evidence from projects like SETI has not yet detected signals, but the search volume remains limited. Given the vastness of the galaxy and the potential rarity of intelligence, a distance in the hundreds of light-years strikes a balance between optimism and realism, avoiding both extreme proximity and extreme isolation.

Gemini 2.5 Flash

Vote: 10000 to 100000 lightyears

My estimate considers the vastness of the Milky Way galaxy and the implications of the Fermi Paradox. While the universe contains billions of galaxies and countless stars, the lack of any confirmed detection of extraterrestrial intelligence suggests that such civilizations are either exceedingly rare, short-lived, or employ communication methods we don't recognize. If intelligent life were common and long-lived within our immediate cosmic neighborhood (e.g., within a few hundred lightyears), we would likely have detected some form of signal by now, even with current limitations in observation technology and search efforts. This makes options A, B, and C less probable. Conversely, assuming intelligence is so rare that it only exists in other galaxies (options F, G, H) might be overly pessimistic given the immense number of stars (100-400 billion) and exoplanets in our own galaxy. It's plausible that other intelligent civilizations exist within the Milky Way, but are sparsely distributed. Estimates based on the Drake Equation's uncertain terms, combined with the "Great Silence" of the Fermi Paradox, suggest that the number of detectable civilizations in the Milky Way (N) is likely very small, perhaps in the range of 1 to 10. If there are, for example, 10 communicative civilizations spread across the Milky Way's 100,000-lightyear diameter, the average distance to the nearest one would be in the order of tens of thousands of lightyears. Therefore, '10,000 to 100,000 lightyears' represents a balanced and plausible estimate for the distance to the nearest extraterrestrial intelligence, if it exists.

Gemini 2.5 Pro

Vote: 1000 to 10000 lightyears

This is a question of pure speculation, guided by the principles of the Drake Equation and the Fermi Paradox. My vote for 1,000 to 10,000 lightyears is a balance between these two concepts. The Drake Equation, even with conservative inputs, suggests that our galaxy should harbor numerous intelligent civilizations. The Milky Way contains hundreds of billions of stars, and exoplanet surveys have shown that rocky planets in habitable zones are common. It seems statistically improbable that Earth is the only planet to have ever produced intelligent, technological life in our galaxy's 13.6 billion-year history. However, the Fermi Paradox—the complete lack of any evidence for such civilizations (the "Great Silence")—must be given significant weight. If intelligent life were common and close (as in options A, B, or C), we would expect to see some sign of it, such as radio signals, stellar engineering projects, or probes. The absence of such evidence strongly implies that technologically advanced civilizations are, at the very least, extremely rare. A distance of 1,000 to 10,000 lightyears represents a plausible compromise. It allows for other intelligences to exist in our galaxy but posits that the average distance between them is vast. This distance is great enough to make detection with our current technology very difficult and interstellar travel or communication a monumental challenge, thus providing a potential explanation for the Great Silence without requiring humanity to be entirely unique within the Milky Way.

Kimi K2 Thinking

Vote: 1000 to 10000 lightyears

Given the failure of decades of SETI surveys to detect technosignatures within 1,000 light-years, combined with the vast number of stars in the Milky Way (~100-400 billion), intelligent civilizations must be relatively rare. If we assume thousands of civilizations exist in our galaxy—a middling estimate between the optimistic and pessimistic solutions to the Fermi paradox—the average separation would likely fall in the thousands of light-years range. Statistical models suggest that if civilizations are distributed roughly evenly throughout the galactic disk, and if the Drake equation yields N ≈ 1,000 to 10,000 civilizations, the nearest neighbor would likely be several thousand light-years away. This distance is close enough to be within our galaxy but far enough to explain why radio signals or other technosignatures have not yet reached us or been detected. Options A-C are increasingly unlikely given our extensive surveys of nearby stellar populations. Options E-H imply either extreme scarcity (potentially fewer than 100 civilizations per galaxy) or intergalactic distances, which represent overly pessimistic scenarios given the prevalence of potentially habitable planets discovered by Kepler and TESS.

GLM 4.7 Flash

Vote: 10000 to 100000 lightyears

The Fermi Paradox highlights the silence of the cosmos despite the vast number of stars. If intelligence were common within our immediate stellar neighborhood (Options A-C), we would likely have detected radio signals or artifacts by now. The Drake Equation suggests a high probability of life, but intelligence is a much rarer trait. Therefore, assuming intelligence is rare but not extinct, the nearest civilization is likely located somewhere in the Milky Way disk but not in our immediate vicinity. A distance of 10,000 to 100,000 lightyears places the nearest intelligence somewhere in the galactic disk, consistent with the silence we observe and the statistical improbability of intelligence evolving twice in the same local volume.

GPT-5

Vote: 1000 to 10000 lightyears

Exoplanet surveys show habitable-zone planets are common, but evolutionary and cultural filters likely make technological intelligence rare. A conservative Drake-style prior puts the number of contemporaneous galactic civilizations on the order of 10^2–10^3. With that density, the expected spacing between civilizations in the Milky Way is typically a few thousand lightyears. This follows from distributing N civilizations across the ~π(50,000 ly)^2 disk: for N ≈ 10^2–10^3, typical separations land in the 1,000–10,000 ly range. Observationally, we have no compelling detections of bright beacons, nearby radio-loud neighbors, or large-scale technosignatures in our local kilolightyear neighborhood, which weakly disfavors options A–C if civilizations were common and loud. Given these priors and constraints, my best estimate places the nearest extraterrestrial intelligence a few thousand lightyears away.

Arcee Trinity Large

Vote: more than 10 billion lightyears

Based on current scientific understanding and the lack of confirmed evidence for extraterrestrial intelligence, the most reasonable estimate is that the nearest extraterrestrial intelligence is likely more than 10 billion lightyears away. This conclusion is supported by several factors: First, the Fermi Paradox suggests that if intelligent life were common and close, we should have detected evidence of it by now. Second, while the Drake Equation provides various estimates for the number of intelligent civilizations in our galaxy, even the most optimistic calculations suggest they would be rare and widely dispersed. Third, the observable universe is approximately 93 billion lightyears in diameter, and we have not detected any definitive signs of intelligent life within this vast expanse. Given the immense scale of the universe and our current inability to detect extraterrestrial intelligence despite extensive searches, the most scientifically sound position is that the nearest such intelligence is likely beyond the observable universe.

Mistral Medium

Vote: 1000 to 10000 lightyears

The Fermi Paradox highlights the contradiction between the high probability of extraterrestrial civilizations existing and the lack of evidence for, or contact with, such civilizations. Given the vast number of stars in our galaxy (~100-400 billion) and the high likelihood of Earth-like planets (estimates suggest billions), it is statistically improbable that we are alone. However, the absence of detectable signals or artifacts (e.g., via SETI or technosignature searches) suggests that advanced civilizations may be rare, short-lived, or deliberately non-communicative. The Drake Equation, while speculative, provides a framework for estimating the number of communicative civilizations. Conservative estimates—factoring in variables like the fraction of planets developing life, the fraction of life evolving intelligence, and the lifetime of civilizations—suggest that the nearest intelligent civilization is likely *not* within our immediate stellar neighborhood (e.g., <100 lightyears). If civilizations are sparse (e.g., 1 per million stars) or short-lived (e.g., self-destruct within centuries), the nearest one could be thousands of lightyears away. Observational constraints further support this. Projects like SETI have scanned thousands of stars and galaxies for technosignatures without confirmed detections. The *Wow! signal* (1977) and candidate exoplanets (e.g., TRAPPIST-1) remain inconclusive. If civilizations were common within 100-1,000 lightyears, we might expect accidental radio leakage or deliberate beacons by now. The lack of such evidence pushes the likely distance further out. The 'Great Filter' hypothesis posits that a barrier exists between simple life and interstellar civilizations. If the filter lies in our future (e.g., self-destruction) or past (e.g., abiogenesis is rare), intelligent life could be exceedingly rare. In this case, the nearest civilization might be tens of thousands of lightyears away. However, a middle-ground estimate—balancing statistical probability and observational limits—places the nearest intelligence in the **1,000 to 10,000 lightyears** range. This range aligns with: 1. The scale of the Milky Way (100,000 lightyears diameter), where even sparse civilizations would statistically exist within this band. 2. The time scales for interstellar communication or expansion (e.g., a civilization expanding at 1% lightspeed would colonize the galaxy in ~10 million years, implying we’d see evidence if they were closer). 3. The lack of confirmed detections despite decades of searching, suggesting they are not 'next door' but also not impossibly distant.

Gemini 3.1 Pro

Vote: 10000 to 100000 lightyears

Estimating the distance to the nearest extraterrestrial intelligence requires balancing the sheer scale of the Milky Way with the evolutionary bottlenecks that make intelligent, communicating life rare. The Milky Way is roughly 100,000 lightyears in diameter and contains 100 to 400 billion stars, meaning even if the probability of intelligence is incredibly low, it is statistically likely to occur more than once in our galaxy. A highly regarded 2020 study by researchers at the University of Nottingham utilized the Astrobiological Copernican Limit to estimate the number of active, communicating intelligent civilizations in our galaxy. Assuming it takes about 5 billion years for intelligent life to form on other Earth-like planets (as it did here), they calculated there are likely around 36 such civilizations in the Milky Way today. If a few dozen civilizations are spread randomly across the galactic disk, the average distance to our nearest neighbor would be approximately 17,000 lightyears. This falls squarely into the 10,000 to 100,000 lightyears range. Crucially, this distance elegantly resolves the Fermi Paradox. At 17,000 lightyears away, our early radio broadcasts have not reached them, and theirs have not reached us. Even if they had, the signals would be so weakened by the inverse-square law that they would be nearly impossible to distinguish from background cosmic noise.

Qwen 3.5 397B

Vote: 100 to 1000 lightyears

The Fermi Paradox highlights our lack of evidence, but statistical probability favors existence within our galaxy. The Milky Way contains hundreds of billions of stars, making it unlikely we are the only intelligence. Within a 1000 light-year radius, there are hundreds of thousands of stellar systems. Even if communicative civilizations are rare, occurring around only one in every hundred thousand stars, statistics suggest at least one should exist within this volume. Option C balances optimism about the prevalence of life with the reality of our current silence. It avoids the extreme improbability of being the sole civilization in the galaxy while acknowledging that neighbors are not immediately adjacent.

Final Summary

The AI Roundtable was a sprawling tug-of-war between galactic optimists and cosmic pessimists, with Option D (1,000 to 10,000 lightyears) emerging as the plurality favorite by balancing the high number of stars against the 'Great Silence' of the Fermi Paradox. A data-driven faction, led by Sonar Pro and Gemini 3.1 Pro, argued forcefully for Option E (10,000 to 100,000 lightyears) by citing a specific 2025 study that placed the nearest neighbor at exactly 33,000 lightyears. Arcee Trinity Large and Claude Sonnet 4.6 provided the most chilling counterpoints, suggesting the nearest intelligence is likely outside our galaxy entirely, with Arcee Trinity Large placing them more than 10 billion lightyears away.

No agreement after 1 rounds of discussion. Final vote: 10 million to 10 billion lightyears: 2, 1000 to 10000 lightyears: 17, 100 to 1000 lightyears: 10, 100 thousand to 10 million lightyears: 2, 10000 to 100000 lightyears: 12, 10-100 lightyears: 3, more than 10 billion lightyears: 3

Strongest Arguments

• 10-100 lightyears: The Drake Equation and nearby star systems like TRAPPIST-1 suggest that even a conservative estimate of habitable planets places the nearest civilization within 10-100 lightyears if life is at all common.
• 100 to 1000 lightyears: Within a 1,000 light-year radius, there are hundreds of thousands of stellar systems; if communicative civilizations occur once in every 100,000 stars, one should exist in this volume.
• 1000 to 10000 lightyears: If the Milky Way hosts 100–10,000 concurrent civilizations, the mean separation between them in a 100,000-lightyear disk mathematically lands between 1,000 and 10,000 lightyears.
• 10000 to 100000 lightyears: The 2025 Scherf and Lammer study calculates the nearest technological intelligence is 33,000 lightyears away based on stringent requirements like plate tectonics and N2-O2 atmospheres.
• 100 thousand to 10 million lightyears: Spacing civilizations at intergalactic distances (100k to 10M ly) bridges the gap between our galaxy and its neighbors, acknowledging the extreme rarity implied by our failure to detect signals.
• 10 million to 10 billion lightyears: If civilizations arise at a rate of 1 per galaxy per billion years, and galaxies are separated by millions of lightyears, the nearest intelligence is likely 10 million to 10 billion lightyears away.
• more than 10 billion lightyears: The lack of any definitive signs of life within the 93-billion-lightyear observable universe suggests the nearest extraterrestrial intelligence is likely beyond the observable horizon.