Stuart J. Russell on Open-source AI is more dangerous than c…

Stuart J. Russell

AI Expert and Professor

Below middling levels of capability, probably a net benefit. As they become more capable, open-weight models become much more dangerous than closed-weight models. For instance, imagine if five billion people had free access to an open-weight model more powerful than Claude Mythos, which Anthropic withdrew access to – how long would it take until one of those five billion decided to use it to try to bring down the critical infrastructure of a country?

Unverified (Sep 14, 2026)

Source:

Stuart Russell, “How AI could change the world,” Chatham House / The World Today, September 14, 2026. In the article’s open-source-AI discussion, Russell is identified as a UC Berkeley computer-science professor and president of the International Association for Safe and Ethical AI.

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Open-source AI is more dangerous than closed-source AI

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