Microsoft Reveals 2 Trillion Parameter MAI-Base-2 Model

Oct 17, 2026
Microsoft unveiled MAI-Base-2, a mixture of experts base model with 2 trillion parameters that activates 80 billion parameters for each prompt.

Microsoft revealed MAI-Base-2, a base model with 2 trillion parameters, according to SiliconANGLE. The mixture of experts model activates 80 billion parameters for each prompt.

Microsoft says MAI-Base-2 outperformed DeepSeek-V4-Pro-Base on internal science, programming and math benchmarks. The company also says the model is up to 12 times more efficient on certain hardware measures.

Microsoft trained MAI-Base-2 for 38 days using 16,000 Nvidia GB200 chips and a dataset of 50 trillion tokens. About one fifth of the tokens trained its computer vision module, which processes material such as scientific charts.

The company will license the model weights to trusted partners through Azure. It also plans to use MAI-Base-2 as the foundation for additional language models.

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