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> starting from a strong open-source foundation and investing $40 million to train Thomson

Sounds like they spent $40 million finetuning an open weight model on their own data? I wonder what they built on.

From the HF link posted above it's Qwen3.6-35B-A3B.

Thanks! And from the Technical Report linked in there it looks like their Large unreleased model is a trained Qwen3.5-397B

Per Business Insider [1], it was built on Qwen.