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MAI-Thinking-1 vs GPT-5.5: Complete Comparison
Microsoft AI's MAI-Thinking-1 versus OpenAI's GPT-5.5: compare first-party Microsoft reasoning against OpenAI's flagship API model.
Featured · Updated today · Last verified: June 2026 · Score 7
Choose MAI-Thinking-1 when
Microsoft-native reasoning pilots.
Choose GPT-5.5 when
OpenAI-first production reasoning and coding apps.
Overview
Microsoft AI's MAI-Thinking-1 versus OpenAI's GPT-5.5: compare first-party Microsoft reasoning against OpenAI's flagship API model.
Recommendation
Microsoft AI's MAI-Thinking-1 versus OpenAI's GPT-5.5: compare first-party Microsoft reasoning against OpenAI's flagship API model.
Limitations and trade-offs
Microsoft's launch note is not a full API specification; verify access before making rollout plans.