GPT-5.5
GPT-5.5 is OpenAI's newest frontier model, focused on agentic coding, computer use, knowledge work, and scientific research with a 1M-token context window.
Technical specification
Modalities
Capabilities
17Reasoningโ
Reasoning
Multi-step reasoningโ
Reasoning
Long contextโ
Reasoning
Codingโ
Coding
Function Calling
Planning
Structured outputโ
Structured gen.
Audio understanding
Audio
Image understandingโ
Vision
Video Understanding
Other
Chart understanding
Vision
Diagram reasoning
Reasoning
OCRโ
Vision
Multilingualโ
Language
Planningโ
Planning
Streaming output
Reasoning
Interleaved Multimodal Input
Reasoning
Multimodal understandingโ
Multimodality
Security and enterprise
OpenAI rates GPT-5.5's cyber and biological capabilities as High under the Preparedness Framework. The model underwent a full safety and governance process, including targeted evaluations for advanced cyber and biological capabilities and testing with external experts.