OpenAI's GPT-5.1-CODEX Mini is a chat model capable of various tasks, including code completion, generation, and review, as well as reasoning and tool use. It excels in mathematical reasoning, as evidenced by its top 25% score on the Math Index, and also performs well on the LiveCodeBench benchmark.
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272K
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128K
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Data sourced from official provider APIs and documentation
Last updated: Aug 8, 2026
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