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Arcee's[1][2] post "Trinity Large: An Open 400B Sparse MoE Model" is dated Jan 27, 2026 and says "We're putting out three variants"; the Trinity-Large-TrueBase, Base and Preview repositories on Hugging Face[4] were all created that day.Arcee AI releases Trinity Large, a 400B-parameter sparse mixture-of-experts model with 13B active, as a chat-ready Preview plus Base and TrueBase checkpoints from a 17T-token run it says cost $20 million.
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