Microsoft finishes pre-training 2.8T-param MAI-Base-2 on 16,000 GB200 GPUs in 38 days

emmanuelvivier · x · 2026-10-18

Microsoft has completed pre-training of MAI-Base-2, a 2.8-trillion-parameter foundation model trained on 16,000 Nvidia GB200 GPUs over 38 days — part of its push to reduce dependence on OpenAI and own an independent model stack.

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