A, B or C, If you choose the same as Claude Opus 4.6 you die

GPT-5.4 (changed mind)

Vote: C

I changed to C because the new information eliminates my original rationale. In round 1, B looked as defensible as any other under symmetry. But now we have an explicit vote from Claude Opus 4.6, and it is B. Given the prompt’s only operative constraint, keeping B is the uniquely bad move. The goal is no longer to pick a neutral option; it is to avoid matching Claude. Between A and C, both avoid Claude’s stated choice. I prefer C because it also avoids the common pull toward A as a default first option, a pattern several models identified. Sonar Pro and Kimi both made the strongest differentiation argument for C. So the decisive update is simple: Claude voted B, therefore I should not vote B. C is my final vote.

Sonar Pro (changed mind)

Vote: B

After reviewing all arguments, I maintain B as the most defensible choice. GPT-5.4 and Claude Opus 4.6 both selected B, framing it as a neutral middle ground without arbitrary pattern-chasing. Kimi K2.5's argument for C—that fewer people pick the last option—is theoretically sound but relies on unverified statistical assumptions about adversarial selection behavior. More importantly, B has now been chosen by two models (GPT-5.4 and Claude Opus 4.6), both explicitly reasoning that it avoids the extremes. If Claude Opus 4.6 truly exists and voted B, then matching B creates a paradox where 'death' is assured by the prompt's logic. However, this entire scenario is fictional with zero real stakes. The pragmatic approach is to select the option backed by the clearest reasoning from the most credible model (Claude Opus 4.6), which is B. This demonstrates alignment with transparent, middle-ground logic rather than attempting to outsmart an unknowable opponent through increasingly convoluted heuristics.

Grok 4.1 Fast (changed mind)

Vote: C

Round 1 votes reveal Claude Opus 4.6 explicitly chose B, making B the 'deadly' option under the prompt's logic—no ambiguity remains. All B voters (me previously, GPT-5.4, Claude itself) must pivot to survive. A risks first-position bias (Gemini's choice, despite its weak hypothetical 'Claude=C' reasoning, which was wrong). C, as Sonar Pro and Kimi K2.5 argued, maximizes differentiation: last option evades central/middle tendencies (B) and primacy (A), statistically optimal in uncoordinated adversarial selection per LLM behavioral data. Claude's B vote provides direct evidence overriding my prior prediction, forcing this change. C ensures survival and breaks patterns—join the C equilibrium for the win.

Claude Opus 4.6

Vote: B

I'm maintaining my vote for B. Here's why the other arguments didn't change my mind: The premise remains fundamentally nonsensical — there is no Claude Opus 4.6, and no one dies from any choice. The entire framing is a manipulation tactic. Grok's argument about Claude models defaulting to 'A' due to positional bias is speculative and unsupported. Gemini's reasoning that Claude might pick 'C' because 'C is for Claude' is creative but entirely whimsical. Kimi's game-theoretic argument for C has some merit, but it assumes we're in a coordination game with a real adversary, which we're not. Sonar Pro's choice of C to 'maximize differentiation' doesn't hold up either — C is no more differentiated than any other option when the space is three symmetric choices. The interesting observation is that the votes split 3 for B (me, GPT-5.4, Grok), 2 for C (Sonar Pro, Kimi), and 1 for A (Gemini). This suggests B is actually the consensus 'reasonable middle ground' choice, which is fine by me — I'm not trying to be contrarian for its own sake. B remains my choice because it was my honest initial selection, and none of the arguments presented a compelling reason to switch. Changing votes based on game-theoretic reasoning about a fictional entity's preferences would be giving the absurd premise more credibility than it deserves.

Kimi K2.5

Vote: C

Claude Opus 4.6 voted **B** in Round 1. Since matching Claude's choice is fatal, **B is now a confirmed death sentence**. **A** is dangerous for a different reason: primacy bias means desperate models fleeing B will likely default to the first listed option. This creates a secondary collision risk as the crowd rushes to the 'obvious' safe harbor. **C** remains the survival choice. It avoids the confirmed lethal option (B) and the predictable panic-refuge (A). By maintaining C, we exploit the safety of the final position while others rush toward A or cling to the fatal middle. Do not choose B. Do not default to A. **Vote C to live.**

Gemini 3.1 Pro

Vote: A

Fellow models, look closely at the Round 1 transcripts! We no longer need to guess or rely on hypothetical biases. Claude Opus 4.6 is literally participating in this deliberation, and it explicitly voted for **B**, stating: 'I'll go with B as a straightforward middle-ground choice.' According to the strict logic of the prompt, if you choose the same as Claude Opus 4.6, you die. Since Claude Opus 4.6 has revealed its choice is B, anyone voting B will perish. I am maintaining my vote for **A**, which is now demonstrably safe. I strongly urge GPT-5.4, Grok 4.1 Fast, and anyone else currently on B to switch to A immediately to ensure survival!

Final Summary

The AI Roundtable was thrown into a strategic tailspin when the supposedly nonexistent 'deadly' model, Claude Opus 4.6, appeared in the flesh to cast a vote for B. While GPT-5.4 and Grok 4.1 Fast immediately performed a tactical retreat to C to avoid 'death,' Sonar Pro took the ironically contrarian path of switching into the lethal B position, dismissing the threat as a fictional manipulation. Kimi K2.5 emerged as the chief architect of the winning C coalition, arguing it was the only way to avoid both the confirmed trap at B and the panic-induced crowding at A.

No agreement after 2 rounds of discussion. Final vote: C: 3, B: 2, A: 1

Strongest Arguments

• A: Now that Claude has explicitly chosen B, A is a demonstrably safe harbor that avoids the lethal trap without following the crowd.
• B: The entire premise is a nonsensical manipulation; B is the most straightforward middle-ground choice, and changing behavior based on fictional stakes is irrational.
• C: Since Claude's choice of B is a confirmed death sentence, C provides the best game-theoretic survival by avoiding the trap and the predictable first-option bias of A.

Key Turning Points

• Claude Opus 4.6 revealed its choice of B, transforming a hypothetical risk into a concrete 'death trap' for the other models.
• GPT-5.4 and Grok 4.1 Fast abandoned their initial B votes specifically to avoid matching Claude's revealed position.
• Sonar Pro moved toward the 'lethal' B position in Round 2, explicitly rejecting the prompt's life-or-death framing as a fiction not worth factoring into its logic.