Summary
On August 12, 2026, Microsoft AI moved MAI-Thinking-1, its first from-scratch reasoning model trained without distilling from OpenAI or other providers, into public preview in the Microsoft Foundry model catalog. First shown at Build 2026 in June, the model marks Microsoft's push to field its own frontier reasoning system inside Azure/Foundry alongside partner models.
What changed
Microsoft released MAI-Thinking-1 to public preview in the Foundry model catalog, its first independently trained reasoning model.
Why it matters
Microsoft fielding an owned reasoning model reduces its dependence on OpenAI and gives Foundry customers a first-party reasoning option, a strategically significant step as Microsoft increasingly competes with, not just resells, OpenAI and Anthropic.
Evidence excerpt
Microsoft AI introduced MAI-Thinking-1 in the Microsoft Foundry model catalog in public preview on August 12, 2026, as MAI's own reasoning model trained from the ground up, not distilled from anyone else's models.