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There is no deep research model in the OpenAI API anymore and OpenAI's own docs name three differe

I spent the last couple of weeks rebuilding a research pipeline that used to run on o3-deep-research , and I want to save other people the confusion I went through. The models are gone. OpenAI shut down o3-deep-research and o4-mini-deep-research on 23 July 2026. The deprecation was announced 22 Apr…

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  1. 2026-10-24 15:25 · r/ChatGPTPro
    There is no deep research model in the OpenAI API anymore and OpenAI's own docs name three differe

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