GPT-5.1-Codex-Mini
OpenAI · openai/gpt-5.1-codex-mini
GPT-5.1-Codex-Mini is a smaller and faster version of GPT-5.1-Codex
GPT-5.1-Codex-Mini ranks #183 of 359 models in the default AI Benchmark Hub order (quality first, then cost). At $1.13 blended per million tokens, it is cheaper than 48% of models with published API pricing. Its 400,000-token context window is 1.5× the catalog median (262,144 tokens).
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Context
Max context: 400000
Max output: 128000
Max output: 128000
Pricing
Input / 1M: 0.25
Output / 1M: 2.00
Blend / 1M: 1.13
Output / 1M: 2.00
Blend / 1M: 1.13
Quality
Quality index: —
Provider
Provider: OpenAI
Moderated: no
Moderated: no
Monthly cost at this blended rate
Estimated API spend if every token is billed at $1.13per million (the blend of this model's input and output prices). Real bills depend on the input/output mix.
| Tokens / month | Est. cost (USD) |
|---|---|
| 1,000,000 | $1.13 |
| 10,000,000 | $11.25 |
| 100,000,000 | $112.50 |
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