Weight forensics suggest DeepSeek, Kimi, MiniMax, Ant models were trained on banned Blackwell GPUs

SumitGup · x · 2026-11-13

Will Depue reports forensic evidence that DeepSeek, Moonshot AI, MiniMax, and Ant Group trained their newest models on NVIDIA Blackwell chips that are barred from export to China. The trick: model weights are initialized by the GPU using a random seed, and different GPU architectures produce distinct arrangements even with the same seed — a hardware fingerprint whose traces survive training. He searched over 6 trillion combinations, matching DeepSeek-V4-Flash/V4-Pro, Kimi K3/K3.1-Pro, MiniMax-M3, and Ling-3.1-flash to Blackwell (older models matched Hopper). He verified on real hardware, bit-exactly restoring DeepSeek-V4-Flash's initial weights on a B300 using the recovered seed (953049583). Unverified officially.

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