gpt-5.5-pro · openai

GPT-5.5 Pro is a high-performance model launched by OpenAI, optimized for deep reasoning capability and accuracy in complex and high-priority work scenarios. It features a context window of over 1 million tokens, including 922,000 input tokens and 128,000 output tokens. Supporting text and image input, it is applicable to long-term problem solving, autonomous intelligent programming and precise execution of multi-process tasks.