{"id":"openai/gpt-5.1-codex-max","name":"GPT-5.1-Codex-Max","owned_by":"openai","description":"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":400000,"max_tokens":128000,"type":"language","tags":["reasoning","tool-use","vision"],"released":1764878934,"modalities":{"input":["text","image"],"output":["text"]},"supported_parameters":["include_reasoning","max_completion_tokens","reasoning","reasoning_effort","response_format","seed","structured_outputs","tool_choice","tools"],"pricing":{"input":"0.00000125","output":"0.00001","input_cache_read":"0.000000125"},"legal":[]}