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Microsoft's new MAI models

simonwillison.net·Jun 2, 2026

Microsoft recently announced two new text LLMs, MAI-Thinking-1 and MAI-Code-1-Flash, which are designed for reasoning and coding tasks, respectively, and are built using clean, commercially licensed data. Despite initial misunderstandings about their parameter counts, both models utilize a proprietary training dataset, although they still face challenges regarding licensing similar to other major LLMs.

Microsoft's release of new LLMs, MAI-Thinking-1 and MAI-Code-1-Flash, highlights an evolving focus on models optimized for specific applications like GitHub Copilot and VS Code, emphasizing high performance and cost efficiency. This suggests a trend towards more specialized AI tools in coding environments, which could impact AI workflow and productivity. For someone tracking AI dev tools and code completion, staying updated on how these models integrate and perform with existing tools like Copilot could offer valuable insights for future AI development strategies.

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