OpenAI: GPT-5.1-Codex-Max
openai
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...
- Context window
- 400,000 tokens
- Input cost
- $1.25 / 1M
- Output cost
- $10.00 / 1M
- Latency (p50)
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