Checkpoint forensics claims top Chinese AI models were trained on export-banned Blackwell GPUs

ResultBackground2450 · reddit · 2026-11-13

An analysis by unemploymentlabs ("checkpoint forensics") claims the latest frontier models from leading Chinese labs carry fingerprints of export-controlled NVIDIA Blackwell GPUs. The accompanying table flags DeepSeek-V4-Flash/V4-Pro (Apr 2026), Kimi K3 and K3.1-Pro (Jul/Nov 2026), MiniMax-M3 (Jun 2026), and Ant Group's Ling-3.1-flash (Oct 2026) as trained on Blackwell B200/B300 or GB200/GB300, while each lab's previous generation ran on Hopper. Red marks indicate these chips require a U.S. license for export to China, none reported. Third-party inference, unverified by the labs.

Related event: OpenAI researcher claims forensics show four Chinese labs trained models on banned Blackwell chips(13 posts)→

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