GPT 4o
by OpenAI
Versatile flagship model with native multimodal capabilities supporting real-time audio, vision, and text processing. Established as OpenAI's most capable general-purpose model with superior performance across diverse applications and reliable tool integration.
- Native multimodal processing handling audio, vision, and text simultaneously without separate encoders
- Versatile flagship performance serving as the best general-purpose model for most applications
- Real-time capabilities enabling live conversation and instant image analysis
- Comprehensive tool integration with reliable web search and image generation
- Proven enterprise reliability with extensive deployment across OpenAI's platforms
Web Search
Search the web for current info.
JSON Mode
Output responses in valid JSON format.
Image Generator
Generate images from text prompts.
Model Information
Supported Formats
GPT 5.5OpenAI's most advanced model released April 2026. GPT-5.5 is recommended for most reasoning workloads, combining frontier intelligence with configurable reasoning effort (none → xhigh). Available in API, Codex, and ChatGPT.
GPT 5.5 ProHighest-intelligence API option in the GPT-5.5 family. Use for the most challenging problems that require maximum reasoning depth and can tolerate higher latency. Supports full reasoning effort range from none to xhigh.
GPT 5.4GPT-5.4 is OpenAI's frontier model for complex professional work, designed for agentic, coding, and professional workflows with the highest reasoning capability. Features a 1.05M token context window, native computer use, and built-in support for web search, file search, and MCP.