Former OpenAI researcher says six Chinese AI models were built on banned Nvidia chips

A forensic analysis of public model weights traces DeepSeek, Kimi and MiniMax models to export-controlled Blackwell GPUs. The models come from DeepSeek , Moonshot AI, MiniMax and Ant Group. The findings come from Will DePue, a former OpenAI researcher who joined the company in 2023. He worked on its Sora video models and on post-training for o3 and GPT-4o. DePue published the analysis through Unemployment Labs. He says it relies entirely on the weights the companies released publicly, not on leaks or insider accounts. On X, he said senior researchers at OpenAI and Anthropic had independently verified the result. The report names no outside reviewers. The six models are DeepSeek-V4-Flash, DeepSeek-V4-Pro, Kimi K3, Kimi K3.1-Pro, MiniMax-M3 and Ant Group’s Ling-3.1-flash.

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