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OpenAI API Models o3-pro end of life

85days

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    There are 86 days until OpenAI API Models o3-pro end of life, on Friday, 11 December 2026.

    OpenAI API Models o3-pro reaches end of life on December 11, 2026: upstream support ends and no further security fixes are expected. It was released on April 16, 2025. Active support ended on June 11, 2026.

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    Last verified Sep 16, 2026

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