openai/gpt-5.1-codex-max
GPT-5.1-Codex-Max is OpenAI’s latest agentic coding model, designed for long-running, high-context software development tasks. It is based on an updated version of the 5.1 reasoning stack and trained on agentic...
| Provider | In $/M | Out $/M | Context | Uptime |
|---|---|---|---|---|
| OpenAIcache | $1.25 | $10.00 | 400K | 100% |
| Azurecache | $1.25 | $10.00 | 400K | — |
GPT-5.1-Codex-Max costs $1.25 per million input tokens and $10.00 per million output tokens via OpenRouter, making it 221st cheapest of 298 paid models.
GPT-5.1-Codex-Max generates around 97 tokens per second with 2.5s time-to-first-token (p50), the 65th fastest tracked model.
GPT-5.1-Codex-Max supports a 400K-token context window and can output up to 128K tokens. It accepts text, image input.