OpenAI: GPT-5.1-Codex-Max
OpenAI: GPT-5.1-Codex-Max is a text model from Openai, with a 400K-token context window, priced at $1.25 in · $10.00 out / 1M. On Fully Informed you can add OpenAI: GPT-5.1-Codex-Max to a multi-model panel, where it answers independently, debates the other models and gets cross-checked for blind spots.
Vendor OpenaiType Text400K contextPrice $1.25 in · $10.00 out / 1M
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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...
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- What is 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...
- What is the context window of OpenAI: GPT-5.1-Codex-Max?
- OpenAI: GPT-5.1-Codex-Max supports a 400K-token context window.
- How much does OpenAI: GPT-5.1-Codex-Max cost?
- OpenAI: GPT-5.1-Codex-Max is priced at $1.25 in · $10.00 out / 1M via OpenRouter.
- What are alternatives to OpenAI: GPT-5.1-Codex-Max?
- Comparable text models include OpenAI: GPT-3.5 Turbo, OpenAI: GPT-3.5 Turbo (older v0613), Anthropic: Claude Fable Latest, Anthropic Claude Haiku Latest.
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