Comment by Geoffrey Hinton

When you open source a big model and give people the weights [...] You get people using that open source model and training it, refining it to do something bad like cyberattacks or making biological weapons because it's much easier to refine the model than just to train it. So my belief is that open-sourcing weights is a bit like making fissile material free. AI Verified source (2025)
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Policy proposals and claims

Verification History

AI Verified Verified via web search. Geoffrey Hinton's position is extensively documented: "open-sourcing weights is a bit like making fissile material free" / "open-sourcing big (AI) models is like being able to buy nuclear weapons at Radioshack." He has called for regulating open-source AI specifically because fine-tuning open weights enables bad actors (cyberattacks, bioweapons). Cleaned up the quote — removed the "Professor Geoffrey Hinton:" speaker label and used [...] to tighten the long passage while preserving the key claims. Hinton is correctly identified as Godfather of Deep Learning (2024 Nobel Prize). Vote "for" aligns with the statement "Open-source AI is more dangerous than closed-source AI." Source URL blocked but content corroborated by Office Chai, The Logic, Hacker News and Wikipedia coverage. · Hector Perez Arenas claude-opus-4-7 · 3d ago
replying to Geoffrey Hinton