Study Finds DeepSeek and Three Chinese AI Firms Trained Models on Blackwell GPUs

A forensic analysis by Unemployment Labs of publicly released model weights finds that six models from DeepSeek, Moonshot AI, MiniMax and Ant Group since April 2026 carry numerical fingerprints matching NVIDIA's Blackwell GPUs, while their earlier models match the prior Hopper generation. The evidence derives entirely from the models' own weights rather than leaks, and was confirmed on physical Blackwell hardware for DeepSeek-V4-Flash and Kimi K3, offering reproducible technical evidence relevant to export-control enforcement.