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Field
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GPT-5.1-Codex-Max
openai/gpt-5.1-codex-max
OrganizationOpenAI
FamilyGPT
Released2025-11-13
Context window400K
Max output128K
Modalities
ImageInputTextInputTextOutput
ProvidersPoe, Vivgrid, NanoGPT, OpenCode Zen, Neon, Abacus, Azure, OrcaRouter, Requesty, Kilo Gateway, Vercel AI Gateway, OpenRouter, Jiekou.AI, OpenAI
WeightsClosed
Attachments
Native
Reasoning
Native
Parameters: reasoning, include_reasoning, reasoning_effort
Tool call
Native
Parameters: tools, tool_choice
Structured
Native
Parameters: structured_outputs, response_format
Temperature-
Open weight-
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