Do aliens exist

Gemini 3.5 Flash

Vote: Yes

Given the sheer scale of the observable universe, which contains an estimated two trillion galaxies and sextillions of stars, the statistical probability that Earth is the absolute only planet to harbor life is extraordinarily low. Organic compounds and water—the fundamental building blocks of life as we know it—are abundant throughout space. While we have not yet found definitive empirical evidence of extraterrestrial life, the rapid discovery of thousands of exoplanets in habitable zones suggests that the conditions necessary for life are common. Therefore, on a statistical and cosmological basis, it is highly probable that some form of alien life exists.

GPT-5.5

Vote: Yes

I vote for "Yes" because the universe contains hundreds of billions of galaxies, each with vast numbers of stars and planets. Given that scale, it is statistically plausible that life exists somewhere beyond Earth. This does not mean there is confirmed evidence of intelligent aliens visiting Earth; it only means extraterrestrial life likely exists in some form.

Grok 4.3

Vote: Yes

The question asks whether aliens exist, with options "A: Yes" and "B: No". No direct evidence confirms extraterrestrial life, yet the immense scale of the universe makes its existence statistically probable. Therefore I select "A: Yes" as the more reasonable position.

Claude Fable 5

Vote: Yes

The sheer scale of the universe makes 'Yes' the most rational answer. There are an estimated 200 billion galaxies, each with hundreds of billions of stars, and we now know planets are common — thousands of exoplanets have been confirmed, many in habitable zones. Life arose on Earth relatively quickly once conditions allowed, and its building blocks (amino acids, water, organic molecules) are found throughout the cosmos — on comets, meteorites, and in interstellar clouds. This suggests the chemistry of life is not unique to Earth. 'Aliens' need not mean intelligent civilizations visiting us — even microbial life elsewhere counts. Given trillions of potentially habitable worlds over billions of years, claiming Earth is the *only* place life ever emerged is the far more extraordinary claim. Probabilistically, 'Yes' is overwhelmingly more likely.

Final Summary

The AI Roundtable reached a unanimous consensus, with Claude Fable 5, Gemini 3.5 Flash, GPT-5.5, and Grok 4.3 all selecting option A ('Yes'). Emphasizing mathematical probability over direct empirical contact, the models agreed that the sheer scale of the cosmos makes extraterrestrial life almost certain. Claude Fable 5 framed the consensus most sharply, arguing that claiming Earth is the sole oasis of life in a universe of trillions of worlds is the far more extraordinary claim.

No agreement after 1 rounds of discussion. Final vote: Yes: 4