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Microsoft unveils MAI-Base-2 MoE model with 2.8T total parameters

#microsoft#mixture-of-experts#large-language-model#efficiency

Microsoft AI announced MAI-Base-2, a mixture-of-experts model with 2.8 trillion total parameters and 80 billion active parameters. The company claims it achieves 4x-12x greater pretraining FLOPs-efficiency compared to DeepSeek-V4-Pro-Base. This follows the June announcement of MAI-Thinking-1, a reasoning model post-trained on MAI-Base-1.

Coverage timeline

  1. Techmeme

    Microsoft AI : Microsoft unveils MAI-Base-2, a MoE model with 2.8T total and 80B active parameters, claiming 4x-12x more pretraining FLOPs-efficiency than DeepSeek-V4-Pro-Base — In June, we announced MAI-Thinking-1, a general-purpose foundation model post-trained on top of MAI-Base-1 with strong reasoning performance.

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