Release Summary
Microsoft AI's flagship MoE reasoning model (~35B active, ~1T total parameters) for math, coding, and enterprise workloads. Competitive with Claude Opus 4.6 on SWE-Bench Pro at a smaller inference footprint, preferred to Sonnet 4.6 in blind Surge human evals, with built-in safety guardrails and copyright protection. Available in Microsoft Foundry private preview.
Timeline
June 2, 2026
MAI-Thinking-1 announced
Microsoft AI launches its in-house flagship reasoning model as part of a seven-model family, with Foundry private preview sign-up.