{"id":"openai/gpt-5.5-pro","name":"GPT-5.5 Pro","owned_by":"openai","description":"GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+ token context window (922K input, 128K output) with support for...","context_window":1050000,"max_tokens":128000,"type":"language","tags":["reasoning","tool-use","vision"],"released":1777051896,"modalities":{"input":["file","image","text"],"output":["text"]},"supported_parameters":["include_reasoning","max_tokens","reasoning","reasoning_effort","response_format","seed","structured_outputs","tool_choice","tools"],"pricing":{"input":"0.00003","output":"0.00018"},"legal":[]}