GPT 5.5 API

GPT 5.5 is an AI chat model by OpenAI.

Kind: chat
Brand: OpenAI
Price: 280 credits / M input tokens, 1680 / M output (1 credit = $0.01 on monthly plans)
Released: 2026-04-24
Inputs: model, messages, tools, tool_choice, stream, max_tokens, temperature, top_p, stop, response_format, reasoning_effort

Call it with POST https://api.unicornapi.net/v1/chat/completions and model gpt-5-5.