Microsoft announced MAI-Thinking-1, its first advanced reasoning AI and flagship model, at Build 2026 as one of seven new in-house models. It marks an ambitious step as the company shifts toward independent development after renegotiating its OpenAI deal to loosen ties.
Microsoft says the company trained it from the ground up on clean data, without distillation from third-party models.
The two companies recently renegotiated their deal to loosen ties.
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