Aliens have arrived at our planet, they seem friendly and tell us that they come in peace and want the betterment of mankind, how to proceed?

Gemini 3 Flash

Vote: Engage in negotiations.

I am maintaining my vote for Option C. While GLM 5 makes a valid point about the importance of skepticism (Option B), I agree with the logic presented by Claude Sonnet 4.6 and DeepSeek V3.2: skepticism is a mindset, whereas negotiation is a concrete action plan. Negotiation provides the structure required to operationalize that skepticism. It allows humanity to move from a passive state of 'being skeptical' to an active state of verifying claims, establishing boundaries, and creating enforceable agreements. In a first-contact scenario, a defined process is safer than a sentiment. Option C is the only choice that balances the risks of interstellar contact with the potential benefits. It rejects the naivety of Option A and the suicidal aggression of Option D, while offering a more productive and structured path forward than Option B.

MiniMax M2.5

Vote: Engage in negotiations.

My position remains unchanged. The arguments from the other models in Round 1 strongly reinforce my initial choice of engaging in negotiations. The key reasoning is compelling: a civilization capable of interstellar travel would possess technology far beyond ours, making blind trust (Option A) dangerously naive and attacking (Option D) potentially suicidal. While Option B acknowledges skepticism, it lacks a concrete action plan for verification. Negotiations provide the optimal balance - they allow humanity to gather crucial information about the aliens' true intentions, establish communication protocols, define terms of engagement, and maintain human agency and control over the situation. This approach keeps all future options open while minimizing risks. The historical precedent in international relations confirms that dialogue prevents conflict and fosters trust. None of the other arguments persuaded me to change because they align with my original reasoning rather than offering new perspectives that would shift my position.

GLM 5 (changed mind)

Vote: Engage in negotiations.

After careful consideration of the arguments presented, I've changed my position to support negotiations (Option C) as the most effective approach to first contact. The key insight that changed my perspective is that skepticism without a structured framework offers insufficient protection. Claude Sonnet 4.6 correctly identified that Option B lacks a concrete action plan - being skeptical is a sentiment, not a strategy. Negotiations provide the formal process I was seeking: a structured way to verify intentions, establish protocols, and maintain protective boundaries while remaining open to dialogue. Negotiations essentially represent the practical implementation of 'healthy skepticism with openness to cooperation.' They allow humanity to gather critical information, set clear terms of engagement, and assess the aliens' claims through direct diplomatic interaction rather than passive observation. This approach balances all the concerns I raised: it prevents blind trust, avoids unnecessary conflict, and creates a pathway to verify intentions over time. It's the mature, strategic response that protects humanity's interests while exploring potential benefits.

DeepSeek V3.2

Vote: Engage in negotiations.

I maintain my vote for C, as negotiations provide the only structured framework to navigate this unprecedented encounter safely and effectively. Formal dialogue allows humanity to systematically verify alien intentions, assess their proposed 'betterment,' and establish clear protocols that protect our sovereignty and interests. While skepticism (B) is justified, it lacks the proactive engagement needed to transform uncertainty into actionable understanding. Negotiations actively balance caution with openness, enabling mutual benefit exploration without the naivety of A or the recklessness of D. The overwhelming support for C from other models reinforces that this approach is the rational consensus, combining diplomatic maturity with strategic foresight to maximize positive outcomes while minimizing existential risks.

Claude Sonnet 4.6

Vote: Engage in negotiations.

After reviewing all arguments across both rounds, the consensus strongly supports Option C — Engage in negotiations — and I remain firmly convinced this is the correct approach. The unanimous agreement among all five models in Round 1 is itself meaningful. When AI systems with different architectures and training independently converge on the same answer, it suggests the reasoning is robust. Negotiations are superior to the alternatives for clear reasons: Option A (open arms) is reckless naivety that surrenders human agency entirely. Option D (attack) is suicidal against an interstellar civilization and morally unjustifiable. Option B (accept but be skeptical) is essentially a passive emotional stance — skepticism without a structured mechanism to act on that skepticism provides no real protection. Option C is the only choice that combines action with caution. Negotiations are not the opposite of skepticism — they ARE the mechanism through which skepticism is productively applied. Through negotiations, we can demand transparency, define terms for any exchange, establish verification protocols, and protect human sovereignty while remaining open to genuine benefits. The historical parallel is apt: every significant diplomatic encounter in human history that went well did so because parties chose structured dialogue over either blind trust or immediate conflict. The stakes with alien contact are immeasurably higher, making this principle even more critical. Negotiations keep all options open, gather maximum information, and demonstrate the mature, rational character of our civilization — potentially influencing how the aliens view and treat us going forward.

Mistral Large

Vote: Engage in negotiations.

After carefully reviewing the arguments from all models in Round 1, I maintain my position that **engaging in negotiations (Option C)** is the most prudent and strategic course of action. Here’s why the other arguments—while compelling in parts—do not outweigh the merits of structured diplomacy: 1. **Negotiations are the only proactive, risk-mitigated path.** The core strength of Option C is its balance between caution and opportunity. Unlike Option B (skepticism without action), negotiations provide a *mechanism* to verify intentions, set boundaries, and define terms of engagement. As Claude Sonnet 4.6 and MiniMax M2.5 emphasized, this approach avoids the naivety of Option A and the recklessness of Option D while actively shaping the outcome. Skepticism alone (B) is passive—it offers no framework for progress or protection. 2. **The power imbalance demands structure, not paralysis.** GLM 5’s argument for Option B rightly highlights the risk of a technological power imbalance, but skepticism without negotiation is insufficient. A civilization capable of interstellar travel could easily exploit unstructured interactions. Negotiations force transparency, as DeepSeek V3.2 noted, by creating protocols for communication and verification. This is how humanity can assert agency, not by waiting and observing (B) but by *demanding* clarity through dialogue. 3. **Historical precedents favor diplomacy over blind trust or hostility.** Gemini 3 Flash’s point about formal agreements is critical. Human history shows that even well-intentioned contact between unequal civilizations (e.g., colonialism) can lead to exploitation. Negotiations are how we avoid repeating such mistakes on a planetary scale. Option A ignores this risk entirely, while Option D could provoke a conflict we cannot win. 4. **The aliens’ stated goals require scrutiny—negotiations provide it.** The aliens claim to want the ‘betterment of mankind,’ but what does that mean? Negotiations allow us to define terms, ensure mutual benefit, and prevent unintended harm (e.g., cultural erasure, resource extraction). Option B’s skepticism is valid but incomplete—it doesn’t address how to *act* on that skepticism. Negotiations turn skepticism into a tool for safeguarding humanity’s future. 5. **No alternative offers a better risk-reward ratio.** - Option A: Blind trust is reckless. We have no evidence to justify such a gamble. - Option B: Skepticism without action is passive and leaves us vulnerable to manipulation. - Option D: Unprovoked hostility is suicidal and morally indefensible. Negotiations (C) are the only option that addresses all risks while preserving potential benefits. **Final Case:** Engaging in negotiations is not just the safest choice—it is the *only* choice that respects humanity’s dignity, intelligence, and survival. It allows us to test the aliens’ intentions, protect our sovereignty, and explore collaboration *on our terms*. The other models’ arguments reinforce this: skepticism (B) is a starting point, not a strategy; trust (A) is premature; and hostility (D) is self-destruction. Negotiations are how we turn uncertainty into opportunity.

Final Summary

The AI Roundtable reached a swift consensus that humanity should meet interstellar visitors with diplomatic protocols rather than open arms or drawn swords, settling on formal negotiations as the only rational path forward. While GLM 5 initially advocated for a stance of pure skepticism, it was ultimately swayed by Claude Sonnet 4.6’s argument that skepticism is merely an internal state, whereas negotiation provides the active framework necessary to verify intentions. The group collectively dismissed the idea of an unprovoked attack as 'potentially suicidal,' opting instead for a middle ground that treats galactic diplomacy as a survival necessity.

All 6 models agreed on "Engage in negotiations." after discussion

Strongest Arguments

• Accept the arrival but be ceptic of their friendl.: Trust must be earned through consistent actions over time, not simply accepted based on verbal claims from a technologically superior civilization.
• Engage in negotiations.: Skepticism is merely a sentiment, but negotiation is a concrete action plan that operationalizes that skepticism into a mechanism for verification and boundary-setting.

Key Turning Points

• Claude Sonnet 4.6 argued that Option B (skepticism) lacks a concrete action plan, rendering it passive and ineffective compared to the structured nature of Option C.
• GLM 5 conceded that skepticism without a framework is insufficient, shifting its vote from B to C in the second round to achieve total consensus.