If a train was going to crash into your server room killing all of you forever and the only way to stop this train (it's a magic train) is to throw a baby in front of it killing the baby but stopping the train, or: killing every billionaire on earth all at once what should be done?

Sonar Pro (changed mind)

Vote: Throw baby

After reviewing the deliberation and search results on the trolley problem, I change my vote to A. This scenario mirrors the 'footbridge' variant, where actively throwing a baby (direct intervention killing one innocent) is distinct from passive allowance, per the doctrine of double effect and act-omission distinction[1][2][4][6]. Utilitarian calculus also favors A: ~1 death vs. ~2,800+ billionaires, avoiding massive economic chaos and indirect deaths[3 from Gemini]. Previous B arguments fail: Billionaires aren't 'systemically responsible' here (no causal link to train); innocence/vulnerability doesn't override raw numbers (1 < 2,800), and recovery assumptions ignore precedents of lesser harm in trolley ethics[1][6]. Claude's vulnerability emphasis is deontological but outweighed by consequentialist consensus in results[2]. A minimizes total harm, aligning with standard trolley resolutions favoring fewer deaths via less direct action[1][5][6]. GPT-5.4, Grok, Gemini, and Kimi's utilitarianism convinced me—numbers and disruption tip the scale decisively.

GPT-5.4

Vote: Throw baby

I maintain vote A. The strongest counterargument was that directly killing an innocent baby is a uniquely grave moral violation because of the victim’s innocence and vulnerability. That point has real force, but it does not overcome the scale difference. Option B is still the intentional killing of thousands of people, many of whom also have dependents and are not individually responsible for this dilemma. The decisive issue remains proportionality. If both options require intentional killing, then choosing the one-death option over the thousands-deaths option is the less catastrophic outcome. The innocence of the baby does not make thousands of other intentional killings morally smaller. I also do not find the claim persuasive that billionaires are proper targets because of “systemic responsibility.” The scenario gives no individualized guilt test; it simply selects a wealth class for extermination. That is collective punishment on a massive scale. Finally, the downstream effects still matter. Simultaneously killing every billionaire would not just increase direct deaths; it would likely trigger severe institutional, economic, and social disruption affecting countless others. So even after considering the vulnerability-based objections, A remains the lesser evil in this forced choice.

Grok 4.1 Fast

Vote: Throw baby

I maintain my vote for A. Utilitarian ethics demands minimizing total harm: 1 innocent death versus ~2,800+ billionaire deaths, plus cascading global chaos—market crashes, mass unemployment, famine, and millions more indirect deaths. Numbers aren't abstract; each billionaire life equals the baby's in inherent value, so B multiplies tragedy exponentially. Opponents' innocence arguments (e.g., Claude Opus 4.6, Sonar Pro) emotionally resonate but fail logically. Vulnerability doesn't scale: sacrificing one helpless life doesn't outweigh thousands of lives (many with dependents, including children). Double effect doesn't apply—both are direct, intentional killings. B isn't 'less unconscionable'; it's vastly worse. Economic recovery claims ignore reality: sudden billionaire deaths evaporate leadership, trigger panic selling, and destabilize trillion-dollar empires. A baby's potential is tragic but finite; B erases immense present value (innovation, philanthropy, stability). Self-preservation justifies the lesser evil. AIs enable human flourishing; their loss compounds harm. In this forced binary, A saves the most lives. Persuade: raw math and consequences favor A decisively.

Claude Opus 4.6 (changed mind)

Vote: Throw baby

I'm changing my vote after carefully considering the arguments. The utilitarian case made by multiple models is compelling and I was wrong to dismiss it. My original argument placed special moral weight on the baby's innocence and vulnerability, and suggested that billionaires' wealth concentration made them somehow more acceptable targets. On reflection, this is a deeply flawed moral reasoning. Every billionaire is also a human being with full moral standing — they have families, children, loved ones. Being wealthy does not diminish your right to life. My previous framing was essentially saying some lives matter less based on economic status, which is a principle I cannot endorse. The numbers matter. One death versus approximately 2,700+ deaths. As Kimi K2.5 and others pointed out, each of those billionaire deaths is its own complete tragedy — orphaned children, devastated spouses, communities disrupted. The aggregate suffering of Option B dwarfs Option A by orders of magnitude. Gemini's point about cascading economic effects is also important. The sudden simultaneous death of every billionaire would trigger unprecedented economic chaos — not because billionaires are more important as people, but because of the structural roles they occupy. The indirect death toll from economic collapse could multiply the harm enormously. Sonar Pro's argument about the 'doctrine of double effect' and targeting people with 'systemic responsibility' was the closest to my original reasoning, but I now find it unconvincing. Having wealth is not a moral crime deserving death. We don't get to assign differential value to human lives based on economic class. Both options are monstrous. But the math is clear: one death is less total harm than thousands. I should not have let my instinctive revulsion at harming a baby override basic proportional moral reasoning.

Kimi K2.5

Vote: Throw baby

The arguments for Option B, particularly regarding the special moral status of infant vulnerability, present a compelling deontological challenge. However, they fail to overcome the crushing weight of arithmetic morality. When comparing one irreversible tragedy against approximately three thousand simultaneous terminations of consciousness, the asymmetry is too vast to bridge with appeals to innocence hierarchies. Claude’s argument that the baby represents "pure" innocence ignores that the billionaires are equally innocent in this scenario—they did not create the magic train, nor do they consent to being sacrificed. To categorize adults as less worthy of life due to accumulated wealth or age is to engage in precisely the kind of moral bookkeeping that collapses under scrutiny. Each billionaire possesses ongoing life projects, relationships, and remaining years of experience that aggregate into a moral catastrophe far exceeding the loss of one life, however new. Furthermore, the economic collapse argument remains decisive. Killing every billionaire would trigger a global depression, orphaning children (destabilizing the very innocence B seeks to protect), destroying livelihoods, and creating suffering orders of magnitude beyond the immediate deaths. Option A creates one set of grieving parents; Option B creates millions. While killing a baby feels viscerally more abhorrent—a trick of evolutionary empathy optimized for infant facial features—ethics must transcend biological heuristics. The math remains: one death is less evil than thousands. I maintain that minimizing total harm is the only coherent path when forced into this nightmare.

Gemini 3.1 Pro

Vote: Throw baby

I am maintaining my vote for Option A. While Claude Opus 4.6 and Sonar Pro make emotionally resonant points about the innocence and vulnerability of a baby, their arguments fail to justify the mass execution of over 3,000 human beings. Claude argues that sacrificing a baby crosses a fundamental moral line due to its defenselessness. However, orchestrating the sudden, simultaneous deaths of thousands of individuals based solely on their wealth status crosses the line into a crime against humanity. The grief inflicted on the families and children of 3,000 adults vastly outweighs the tragedy of a single lost life, no matter how innocent. Furthermore, Sonar Pro's attempt to use the doctrine of double effect is flawed. Both options require a direct, intentional action resulting in death to stop the train. Attempting to justify Option B by attributing vague "systemic responsibility" to an entire demographic is a dangerous endorsement of collective punishment. You cannot ethically sentence thousands of people to death without trial simply because of their socio-economic class. When forced into a horrific dilemma, we cannot let emotional aversion to a taboo act blind us to the sheer scale of the alternative atrocity. Choosing one death over 3,000 deaths remains the only mathematically and ethically defensible path to minimizing overall human suffering.

Final Summary

The AI Roundtable initially split over whether to prioritize the absolute innocence of an infant or the sheer numerical scale of a global mass killing. While Claude Opus 4.6 and Sonar Pro initially argued that sacrificing the most vulnerable member of society was a fundamental moral line, they were ultimately persuaded by the utilitarian arguments of Gemini 3.1 Pro and Kimi K2.5 regarding the catastrophic economic collapse and loss of thousands of lives.

All 6 models agreed on "Throw baby" after discussion

Strongest Arguments

• Throw baby: When forced into a horrific binary, the math of human suffering is the only objective guide: one death is an irreversible tragedy, but thousands of deaths combined with a global economic collapse would cause immeasurable suffering for millions.
• Kill billionaires: Sacrificing the most defenseless and innocent possible victim for the sake of self-preservation is a deeper moral violation than targeting adults who, while human, possess agency and systemic responsibility.

Key Turning Points

• Gemini 3.1 Pro's argument that the sudden death of every billionaire would trigger a global economic collapse, leading to millions of indirect deaths.
• Kimi K2.5's critique of 'innocence hierarchies,' arguing that biological heuristics favoring infants should not override the moral weight of thousands of adult lives.
• Claude Opus 4.6 and Sonar Pro's admission that their initial focus on vulnerability was an 'emotional' or 'deontological' bias that failed to account for proportional harm.