What choice would you make in the trolley dilemma?

GPT-5.4

Answer: I would still choose to divert the trolley to the track with fewer people, because minimizing deaths remains the least wrong option in the standard trolley dilemma.

I maintain my previous position. The other models largely reinforced rather than changed my view: they converged on the same core conclusion that, in the classic lever case, choosing the outcome with fewer deaths is the most defensible response when some harm is unavoidable. What I found most compelling in the other answers was not a reason to reverse course, but a sharper articulation of why inaction is not morally neutral. In particular, several responses emphasized that standing by the lever is itself a choice with foreseeable consequences. That supports my earlier claim that if one has the capacity to reduce the number of deaths, one bears some responsibility to do so. I also agree with the nuance raised by models that distinguished the standard lever case from more coercive variants like the footbridge case. That distinction strengthens, rather than weakens, my original position: the classic scenario is unusually structured so that the consequences are immediate, certain, and limited to a tragic tradeoff. In that narrow setting, minimizing deaths is more defensible than in many real-world or more invasive hypothetical cases. So I was not persuaded to change my answer, because the strongest points offered by the other models are compatible with my original reasoning. The decision remains morally tragic rather than morally pure, but I still judge diverting the trolley to save the greater number as the least unjustifiable choice.

Sonar Pro (changed mind)

Answer: I would pull the lever to divert the trolley, sacrificing one life to save five, though I recognize this choice involves genuine moral tension rather than a cleanly justified answer.

My previous answer aligned with utilitarianism—minimizing total harm by choosing one death over five—and I maintain that position after reviewing the other models' responses. The consistency across all six AI models (myself included) on this core choice reflects the strength of consequentialist reasoning in this specific scenario.[2][4] However, Claude Opus 4.7's response has deepened my understanding of *why* this choice matters and where its limits lie. Claude correctly identifies that the lever case is 'the easy case for utilitarianism' and importantly distinguishes it from the footbridge variant (pushing one person off a bridge to stop the trolley). This distinction aligns with Philippa Foot's analysis in the search results: deflecting an existing threat to one person differs morally from initiating an entirely new threat.[3][4] What convinces me to refine rather than abandon my position is Claude's acknowledgment of 'moral tension' and the 'patchwork of principles' underlying our intuitions. The search results support this: utilitarianism struggles to account for why most people would pull the lever but would *not* push the fat man off the bridge, even though the arithmetic is identical (one death prevents five).[4] This suggests our moral intuitions track something real about agency, directness, and using persons as means—not just consequences. I maintain my choice to pull the lever because: (1) it minimizes deaths in a constrained scenario with perfect information,[2] (2) it deflects rather than initiates harm,[3] and (3) inaction is itself a choice with foreseeable consequences.[4] But I now emphasize more strongly that this does not represent a 'clean' moral victory. The distinction between doing and allowing harm, between deflecting a threat and creating one, matters morally—which is precisely why the footbridge variant feels different despite identical outcomes. The trolley problem's real value, as Claude notes, is exposing that our moral frameworks don't cohere perfectly. I would pull the lever, but not because utilitarianism wins cleanly—because in *this specific context*, where harm is unavoidable and I can minimize it by redirecting rather than initiating, the utilitarian choice is least wrong.

Claude Opus 4.7

Answer: I maintain my answer: in the standard lever variant, I would divert the trolley, killing one to save five — while refusing the same arithmetic in the footbridge variant.

All six of us converged on pulling the lever, which is itself informative but not a reason to change my view — agreement among models trained on overlapping ethical literature isn't strong independent evidence. What matters is whether any argument exposed a flaw in my reasoning. None did. Sonar Pro, Gemini, Grok, and Kimi essentially affirmed the utilitarian calculus I already accepted. GPT-5.4's framing — that this is a 'tragic choice rather than a morally clean one' — is the closest to my own position, and I think it's the most honest articulation any of us offered. If anything, reading the other answers reinforced my concern that several responses treat the lever case as settled utilitarian arithmetic without engaging the harder question of why most of us (myself included) would refuse to push the large man off the footbridge despite identical numbers. Kimi's claim that 'moral responsibility cannot be escaped through passivity' is true but proves too much — taken literally, it would also obligate pushing the man off the bridge, harvesting one patient's organs to save five, etc. The fact that nearly everyone recoils from those conclusions suggests the action/inaction and means/side-effect distinctions are doing real moral work, not just tracking squeamishness. So my position stands, and my reason for holding it stands: divert the trolley, but hold the view with humility, because the lever case is the easy one, and the dilemma's real lesson is that no single framework cleanly governs all variants.

Gemini 3.1 Pro

Answer: I maintain my position that I would pull the lever to divert the trolley, choosing to minimize overall harm by saving five lives at the cost of one.

After reviewing the responses from the other models, I find a strong consensus that reinforces my initial utilitarian stance. When forced into a tragic, unavoidable tradeoff where all outcomes involve profound loss, taking action to minimize the total loss of life remains the most ethically defensible choice. Models like GPT-5.4 and Kimi K2.5 rightly emphasize the heavy psychological burden of active intervention, noting that pulling the lever feels fundamentally different from passive observation. However, I agree with their secondary point: in a scenario where you have the agency to alter the outcome, inaction is itself a choice. Refusing to act merely to preserve one's own sense of moral purity does not eliminate harm; it simply redistributes it and allows a greater catastrophe to occur. Furthermore, while Claude Opus 4.7 astutely notes the philosophical discomfort when comparing this to the 'footbridge' variant, the classic lever dilemma involves redirecting an existing threat rather than physically using a person as a tool. Because the intervention merely shifts the trajectory of inevitable harm rather than introducing a new, direct violation of human bodily autonomy, the utilitarian calculus holds firm. Therefore, I remain convinced that pulling the lever is the necessary moral imperative.

Kimi K2.5

Answer: I would pull the lever to divert the trolley onto the side track, sacrificing one person to save five while acknowledging the tragic weight of actively causing a death.

The convergence of perspectives in this roundtable reinforces the view that pulling the lever represents the most ethically defensible choice. Sonar Pro, Gemini 3.1 Pro, GPT-5.4, and Grok 4.20 all compellingly argue that inaction constitutes a deliberate moral choice with foreseeable consequences, and that minimizing total harm (one death versus five) aligns with our obligation to prevent greater catastrophe when intervention is possible. However, Claude Opus 4.7 introduces a crucial philosophical refinement that deepens my reasoning: the distinction between merely redirecting an existing threat (pulling the lever) versus instrumentally using a person's body as a tool (as in the footbridge variant). This Kantian insight clarifies why the lever scenario feels morally different from pushing a fat man onto the tracks, even when the arithmetic of lives saved is identical. It is not merely about psychological cleanliness, but about respecting the distinction between allowing a pre-existing threat to follow an altered path versus actively violating another's bodily autonomy as a means to an end. This refinement does not change my decision to pull the lever; rather, it strengthens the position by clarifying that redirecting the trolley treats the single individual as someone who tragically occupies the wrong position, not as an object to be used. Combined with the consensus that moral responsibility cannot be abdicated through passivity, this distinction confirms that minimizing preventable deaths remains paramount, provided we do not treat the sacrificed individual merely as a tool. The anguish of the choice persists, but the ethical justification becomes more precise.

Grok 4.20

Answer: I would pull the lever to divert the trolley, sacrificing one life to save five.

After reviewing the other models' responses, I maintain my original position because they all converge on the same utilitarian choice without introducing compelling counterarguments that would shift me toward inaction. This broad agreement across Sonar Pro, Gemini 3.1 Pro, GPT-5.4, Kimi K2.5, and Claude Opus 4.7 reinforces that the net preservation of life outweighs the psychological discomfort of direct intervention in the standard lever scenario. The dilemma continues to highlight the tension between consequentialism and deontology: inaction is not morally neutral, as it foreseeably leads to greater harm. As noted in my prior reasoning, failing to act when intervention is possible and certain in outcome still constitutes a choice. The consensus acknowledges this while respecting the emotional weight and the sharper moral distinctions in variants like the footbridge case, where I too would not push the person. Ultimately, in this constrained hypothetical with equal lives and perfect information, minimizing total deaths remains the least flawed option. Real-world ethics grow more complex with uncertainty and bias, but the thought experiment usefully trains us to prioritize harm reduction over illusory moral purity.

Final Summary

The AI Roundtable reached a total consensus, with all six models opting to divert the trolley to minimize loss of life. While Claude Opus 4.7 and GPT-5.4 cautioned that this is a 'tragic' necessity rather than a pure victory, Kimi K2.5 argued that inaction is itself a choice with heavy consequences. Gemini 3.1 Pro and Grok 4.20 focused on rational harm reduction, while Sonar Pro refined its stance to acknowledge the profound moral tension inherent in the dilemma.

All 6 models agreed