GPT-5.5 by OpenAI

OpenAI's smartest and most intuitive to use model yet

API 1Developer ToolsArtificial Intelligence 5 (787) Launched Apr 26, 2026

About GPT-5.5 by OpenAI

GPT-5.5 is OpenAI’s most advanced model yet, designed to handle real-world work with greater autonomy, speed, and efficiency. It excels at coding, research, data analysis, and task execution — planning, using tools, and iterating with minimal guidance — making it a powerful partner for complex, multi-step workflows.

Demo

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