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OpenAI: GPT-5.1-Codex-Max
modeltested · static-verifiedscore 20/100signed passport ✓published 325d ago · verified 2026-10-24
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...
Declared tools (3)
text+image->texttool-callingstructured-outputs
model:openrouter:openai/gpt-5.1-codex-max