openai/gpt-5.1-codex
GPT-5.1-Codex is a specialized version of GPT-5.1 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....
| Provider | In $/M | Out $/M | Context | Uptime |
|---|---|---|---|---|
| Azurecache | $1.25 | $10.00 | 400K | — |
| OpenAIcache | $1.25 | $10.00 | 400K | 100% |
GPT-5.1-Codex costs $1.25 per million input tokens and $10.00 per million output tokens via OpenRouter, making it 224th cheapest of 298 paid models.
GPT-5.1-Codex scores 43.1 on the Artificial Analysis Intelligence Index, ranking 30th of 180 benchmarked models, with a GPQA Diamond score of 86%.
GPT-5.1-Codex generates around 55 tokens per second with 2.4s time-to-first-token (p50), the 159th fastest tracked model.
GPT-5.1-Codex supports a 400K-token context window and can output up to 128K tokens. It accepts text, image input.