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Microsoft Finishes a 2.8-Trillion-Parameter Base Model, Plans Foundry Licensing

This story is from 2026-10-21. It is preserved in the archive; the latest stories are on the live feed.

TL;DR MAI-Base-2 is a foundation model from Microsoft AI: a mixture-of-experts network with 2.8 trillion total parameters, of which 80 billion activate for each token it processes. A base model is the pre-trained layer that later becomes a product after post-training, and Microsoft announced on 15…

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  1. 2026-10-21 09:00 · DEV Community — AI
    Microsoft Finishes a 2.8-Trillion-Parameter Base Model, Plans Foundry Licensing

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