GPT-5.2 models match GPT-5 and 5.1 with a 400K context window and 128K max output tokens, but have a newer knowledge cutoff of Aug. 31, 2025 vs. Sept. 30, 2024 (Simon Willison/Simon Willison's Newsletter)

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Summary

— We have reimagined Gemini Deep Research to be more powerful than ever. It is now accessible to developers via the new Interactions API …

First seen: 2025-12-12 07:40

Last seen: 2025-12-12 15:45

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