OpenAI: GPT-5.1-Codex-Mini

GPT-5.1-Codex-Mini is a smaller and faster version of GPT-5.1-Codex

Tool useVisionReasoning

Why it stands out

400K-token context window handles longer documents and multi-turn conversations without truncation.

Combines tool use with reasoning — a strong baseline for agentic and multi-step workflows.

Multimodal input (vision) extends it beyond text-only workflows.

$0.25/M input makes it practical for always-on agents, batch processing, or high-volume classification.

What to watch

No benchmark score currently tracked — evaluate using task-specific testing alongside pricing and capability data.

Release timeline

Tracked events for OpenAI: GPT-5.1-Codex-Mini.

release

November 13, 2025

GPT-5.1-Codex-Mini is a smaller and faster version of GPT-5.1-Codex

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LaunchNov 13

OpenAI launched OpenAI: GPT-5.1-Codex-Mini

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