GPT-5.1-Codex
OpenAILanguage modeling/generation
GPT-5.1-Codex is language modeling/generation model published by OpenAI in 2025.
LLM pricing & performance
Full LLM page →GPT-5.1-Codex is available via API — live cost, context, and benchmark data:
Input / 1M
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Output / 1M
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Context
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Tokens/sec
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LiveBench: 69.3SWE-bench Verified: 66.0
Details
- Provider
- OpenAI
- Task
- Language modeling/generation
- Released
- 2025-11-12
- Open weights
- No