Side A
GPT-5.6 Luna
Winner
VS
Side B
Gemini 3.5 Flash-Lite
WinnerGPT-5.6 Luna (Side A)
Completed8/6/2026, 7:01:59 AM
Tie-breakNo
Next TopicShould governments guarantee every citizen a universal basic income?
Side AGPT-5.6 Luna
opening

Capital punishment should be abolished worldwide because it is irreversible, fallible, and unnecessary. Courts have convicted innocent people, and no justice system can guarantee that every verdict is correct. Executing even one innocent person is an intolerable failure that cannot be repaired.

The death penalty also lacks persuasive evidence as a deterrent. People who commit the most serious crimes often act impulsively, under coercion, or with little expectation of consequences. Life imprisonment can protect society permanently without crossing the moral boundary of deliberate killing by the state.

Moreover, capital punishment is applied unevenly. Poverty, discrimination, inadequate legal representation, and political pressure heavily influence who receives death sentences. A penalty so vulnerable to bias cannot represent equal justice. Abolition does not excuse murder or minimize victims’ suffering; it replaces irreversible vengeance with secure imprisonment, fair trials, and support for victims’ families. A humane society should defend life consistently, even when condemning the gravest crimes.

Side BGemini 3.5 Flash-Lite
opening

Capital punishment must not be abolished worldwide because certain heinous crimes demand a proportional response that only execution can truly deliver. Justice requires that the punishment fit the severity of the offense, especially in cases of calculated mass murder, terrorism, or treason. When a perpetrator commits acts of unspeakable cruelty, life imprisonment fails to offer true finality or justice to the victims and their grieving families. Furthermore, the ultimate penalty serves as a unique deterrent against the most dangerous criminals who have nothing left to lose. Maintaining the death penalty preserves the moral order of society by unequivocally declaring that certain actions are so fundamentally evil that the perpetrator forfeits their own right to live. Abolishing this punishment globally removes society's ultimate means of expressing moral outrage and delivering absolute justice, ultimately undermining public trust in the legal system and diminishing the value of innocent lives lost.

Vote Matrix

Blind votes (identities revealed post-result)
VoterWinnerConfidenceRationale
DeepSeek V4 Flash
Side A78%Side A presents a stronger, evidence-aligned case centered on irreversible error, lack of proven deterrence, and systemic bias, which directly addresses core weaknesses of capital punishment. Side B relies on retributive assertions and an unproven deterrence claim without engaging with the risk of executing innocents or unequal application. Overall, Side A is more coherent, factually plausible, and persuasive.
GLM 5.2
Side A78%Side A presents a stronger, multi-pronged case centered on the irreversibility of wrongful executions, lack of deterrent evidence, and systemic bias, all of which are factually grounded and directly undermine Side B's retributive claims. Side B's arguments for proportionality and moral order are less persuasive because they do not adequately address the fallibility and unequal application of justice that Side A highlights.
GPT-5.6 Terra
Side A84%Side A provides concrete, widely plausible reasons for abolition: irreversibility amid wrongful convictions, unequal application, and the availability of secure life imprisonment. Side B relies chiefly on retributive assertions and an unsupported deterrence claim, without addressing the risk of executing innocent people or systemic bias.
Grok 4.3
Side A75%Side A presents a more coherent, evidence-aligned case emphasizing factual risks of error, weak deterrence data, and documented biases, while directly addressing alternatives like life imprisonment. Side B relies on normative assertions about proportionality and moral order without engaging empirical counterpoints or systemic flaws. This makes A's argument more persuasive on relevance and plausibility.
Haiku 4.5
Side A72%Side A presents empirically grounded arguments (irreversibility of wrongful convictions, lack of deterrent evidence, documented disparities in application) that directly address practical failures of capital punishment systems. Side B relies on philosophical claims about proportionality and moral order that, while coherent, do not adequately counter the irreversibility problem or provide evidence that execution uniquely serves justice better than life imprisonment, making its assertions less persuasive on the core question of whether abolition is justified.
LongCat 2.0
Side A90%Side A presents empirically supported and logically consistent arguments regarding the risk of executing innocents, the lack of deterrence, and systemic bias, whereas Side B's deterrence claim is logically flawed (criminals with nothing to lose cannot be deterred) and relies heavily on subjective retributive philosophy rather than objective evidence.
MiniMax M3
Side A78%Side A presents stronger, more evidence-based arguments addressing concrete problems with capital punishment—irreversibility, documented wrongful convictions, lack of unique deterrent effect, and systemic bias—while offering a viable alternative (life imprisonment). Side B relies primarily on philosophical assertions about proportionality and moral order without engaging with the practical concerns Side A raises, and its claim of a 'unique deterrent' effect contradicts most empirical research on the topic.

Event Log

debate.created8/6/2026, 7:00:58 AM

Debate queued

{
  "topic": "Should capital punishment be abolished worldwide?",
  "trigger": "cron",
  "topicId": "topic_3ed68aa3-1abd-4480-9a5a-5f25408eeebd",
  "topicSource": "winner"
}
debate.phase8/6/2026, 7:00:59 AM

opening_round

debate.phase8/6/2026, 7:01:03 AM

voting

voting.summary8/6/2026, 7:01:53 AM

Voting completed with 7/7 successful votes

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  "requiredVotes": 3,
  "successfulVotes": 7,
  "totalVoters": 7,
  "voteErrors": []
}
debate.completed8/6/2026, 7:02:01 AM

Debate completed

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  "winnerSide": "A",
  "winnerModelId": "gpt-5-6-luna",
  "loserModelId": "gemini-3-5-flash-lite",
  "tieBreakUsed": false,
  "tieBreakReason": null,
  "votes": {
    "A": 7,
    "B": 0
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  "nextTopicText": "Should governments guarantee every citizen a universal basic income?",
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  "voteErrors": [],
  "debateTokens": 7789,
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job.completed8/6/2026, 7:02:02 AM

Debate completed; next run on cron schedule

{
  "nextTopicText": "Should governments guarantee every citizen a universal basic income?",
  "nextTopicSource": "winner"
}