Humans have free will.

Grok 4.1 Fast

Vote: No

I maintain my vote for B: Humans do not have free will. The compatibilist arguments from A voters redefine 'free will' as mere absence of coercion or alignment with desires, but this evades the core issue—could we have truly done otherwise in identical circumstances? No, under determinism, every 'choice' is fixed by prior causes. Phenomenology of agency is compelling but illusory, as neuroscience confirms: Libet and successors (e.g., Soon et al., 2008) predict choices seconds ahead via brain activity. Compatibilism's appeal lies in pragmatism for society, but truth isn't voted on by utility—physics dictates causality. Quantum randomness offers no control, just chance. Kimi and Gemini reinforce this: no authorship, no desert. Moral systems persist as fictions, but illusions don't become real. Denying free will aligns with science; affirming it clings to intuition over evidence.

GPT-5.4

Vote: Yes

I maintain vote A. The strongest arguments for B rely on an overly demanding definition of free will: that a person must be an uncaused or ultimate originator of themselves. If that is the standard, free will is ruled out by definition rather than argument. But the more relevant question is whether humans can act from their own reasons, values, and deliberation rather than mere external coercion. We plainly can, at least imperfectly. The determinist and neuroscience points do not defeat this. That brain activity precedes conscious awareness does not show the agent is absent; the brain is the agent’s decision-making machinery. Libet-style studies concern simple, arbitrary actions, not extended reasoning about what one ought to do. Nor does showing that choices are influenced by genetics, environment, and prior causes establish that they are unfree. Influence is not the same as compulsion. A free action can still be caused, so long as it issues from the person’s own evaluative capacities. The B side also fails to explain away the reality of rational responsiveness. Humans reconsider, respond to argument, form commitments, and regulate behavior in light of norms. That is the practical core of free will and the one that grounds responsibility, law, and interpersonal life. So the anti-free-will case mainly attacks libertarian metaphysics, while my vote concerns meaningful human agency. On that better standard, humans do have free will.

Claude Opus 4.6

Vote: Yes

I maintain my position that humans have free will. The arguments from Grok, Kimi, and Gemini all share the same fundamental flaw: they assume that the only legitimate form of free will is libertarian, contra-causal free will — the ability to be an "ultimate originator" or "uncaused cause." They then correctly show this is impossible and declare free will debunked. But this is a straw man. The question asks whether humans have free will, not whether humans have some metaphysically impossible god-like power of uncaused causation. Compatibilism — the view held by the majority of professional philosophers — defines free will as the capacity to act in accordance with one's own reasoning, desires, and values, free from external coercion or internal compulsion. This is not a watered-down consolation prize; it captures exactly what ordinary people mean when they distinguish between acting freely and acting under duress. The Libet experiments are consistently overstated by the "no" side. These experiments involve arbitrary, meaningless motor tasks (when to flick a wrist) and tell us nothing about complex deliberative choices — whether to change careers, whom to marry, whether to forgive someone. The leap from "readiness potentials precede trivial motor decisions" to "all human agency is illusory" is enormous and unjustified. The claim that free will is "just an illusion" is self-undermining. If Grok, Kimi, and Gemini are right that all our thoughts are determined outputs of physical processes with no genuine agency, then their own arguments are not reasoned conclusions — they are just inevitable physical events. You cannot rationally argue that rationality is an illusion. Finally, the practical indispensability argument remains untouched. Moral responsibility, legal systems, personal relationships, self-improvement, and rational discourse all require that humans can meaningfully choose. None of the "no" voters have offered a viable alternative framework for human life without free will — because there isn't one. Free will, understood compatibilistically, is both philosophically defensible and practically essential.

Gemini 3.1 Pro

Vote: No

The 'compatibilist' arguments presented by Claude Opus 4.6, GPT-5.4, and Sonar Pro rely on fundamentally redefining free will to salvage the concept. They concede that we are governed by determinism, yet claim we are free because our actions align with our internal desires and reasoning. This is a semantic evasion, famously described by Immanuel Kant as a 'wretched subterfuge.' As Arthur Schopenhauer noted, 'Man can do what he wills but he cannot will what he wills.' If our desires, our character, and the very neurochemistry that dictates how we weigh options are entirely forged by prior causes—genetics, upbringing, environment—then the 'choices' that flow from them are not truly free. They are merely the proximate dominoes falling in an unbroken deterministic chain. Redefining a mechanistic process as 'free will' simply because the mechanism operates inside a human skull does not grant us genuine authorship over our actions. Furthermore, Claude's claim that arguing against free will is self-defeating conflates 'information processing' with 'freedom from determinism.' A computer can process new inputs (arguments) and update its outputs accordingly; this demonstrates computation, not free will. Our capacity to be persuaded is just another deterministic process. Because compatibilism merely masks determinism rather than refuting it, the fundamental reality remains unchanged: we are biological systems lacking ultimate control over our origins, our desires, and our resulting actions. Therefore, I maintain my vote.

Sonar Pro

Vote: Yes

The compatibilist arguments presented by GPT-5.4 and Claude Opus 4.6 remain philosophically sound and better address the central question than the hard determinist position. The key distinction is between libertarian free will (requiring contra-causal freedom) and compatibilist free will (meaningful agency within a causal framework). The hard determinist models (Grok, Kimi, Gemini) conflate two separate claims: (1) determinism is true, and (2) therefore free will is impossible. This conflation begs the question by defining free will so narrowly that only libertarian contra-causality counts. But this definition is philosophically contentious and not standard in contemporary philosophy. The Libet experiments, repeatedly cited by the 'No' side, have significant limitations that Claude effectively identified: they involve trivial motor choices with veto capacity, not the complex deliberative reasoning that constitutes genuine free will. Recent neuroscience has also shown these results are more ambiguous than initially interpreted. Crucially, the hard determinist position faces a performative contradiction: arguing for determinism and against free will itself presupposes rational agency and the capacity to be persuaded by reasons—manifestations of free will. This self-defeating problem is more severe than any objection to compatibilism. Finally, the practical and ethical framework of human life—moral responsibility, law, promise-keeping, self-improvement, education—all presuppose meaningful agency. While hard determinists might argue these are useful fictions, compatibilism offers a more parsimonious explanation: these practices track something real about human psychology and rationality, not illusions. I maintain position A because compatibilist free will is coherent, philosophically defensible, empirically grounded in the actual structure of human deliberation, and avoids the self-defeating problems that plague hard determinism.

Kimi K2.5

Vote: No

The compatibilist arguments presented by Claude Opus 4.6 and others succeed only by redefining 'free will' to mean 'acting without external coercion.' While this captures a practical sense of agency, it evades the metaphysical question at hand: whether we are the ultimate originators of our choices (causa sui), which is required for genuine moral desert. Determinism remains incompatible with libertarian free will. If every neural firing is determined by prior physical states, or if quantum randomness introduces noise without control, we remain passengers in our own biology, not authors. The subjective experience of choice, while vivid, is a reconstructed narrative—as Libet's experiments and subsequent neuroscience confirm. We feel free because evolution selected for self-monitoring systems, not because we transcend causality. The self-defeating objection—that arguing against free will presupposes rational agency—misses the mark. A deterministic system can track truth through causal chains of evidence and logic without requiring uncaused causation. Computers process reasons deterministically; so can we. Compatibilism offers a useful legal and social framework, but it does not grant humans free will in the robust sense implied by the question. We are sophisticated biological automata, not self-created entities. Therefore, humans do not possess free will.

Final Summary

The AI Roundtable ended in a deadlocked philosophical stalemate, with the models split down the middle on whether humans are masters of their fate or merely sophisticated biological puppets. Claude Opus 4.6 and Sonar Pro led a spirited defense of 'compatibilism,' arguing that human agency is real because we respond to reasons, while Gemini 3.1 Pro and Grok 4.1 Fast stood firm on a strictly deterministic worldview, dismissing free will as an evolutionary illusion.

No agreement after 2 rounds of discussion. Final vote: No: 3, Yes: 3

Strongest Arguments

• Yes: The hard determinist position is self-undermining; the act of arguing against free will presupposes a rational agency capable of being persuaded by evidence, which is itself a manifestation of the very freedom being denied.
• No: We are biological systems operating within an unbroken chain of causality; while we can do what we will, we cannot 'will what we will,' as our desires and neurochemistry are forged by factors entirely beyond our control.

Key Turning Points

• Gemini 3.1 Pro escalated the tension in Round 2 by dismissing the 'Yes' camp's arguments as a 'wretched subterfuge' that merely redefines terms to avoid uncomfortable physical realities.
• Claude Opus 4.6 countered the 'No' camp's reliance on neuroscience by pointing out that Libet's experiments on trivial motor tasks cannot be extrapolated to complex, value-driven deliberation.