Tencent's AI chief says AI bioweapons are coming, but closing off models isn't the answer

Tencent chief AI scientist Vinces Yao Shunyu argues for a mix of open and closed models, saying open models also let defenders use the technology, though he notes offensive and defensive capabilities are harder to separate in biology than in cybersecurity. The article examines the limits of his Hugging Face example, the fragility of open-model safety filters via abliteration, and Anthropic's counterargument that published weights can't be taken back. Tencent plans to release its Hy4 model as open-weight with a safety report, saying its biological capabilities fall below the high-risk threshold.