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Field
Selected
GPT-5.5 Pro
openai/gpt-5.5-pro
OrganizationOpenAI
FamilyGPT
Released2026-04-23
Context window1.1M
Max output128K
Modalities
ImageInputTextInputTextOutput
ProvidersCrossModel, Poe, FastRouter, LLM Gateway, OpenCode Zen, ZenMux, OrcaRouter, Kilo Gateway, Vercel AI Gateway, OpenRouter, 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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