Cost-effective variant of GPT-5 maintaining advanced reasoning capabilities at accessible pricing. Delivers GPT-5 level intelligence with balanced performance for everyday use cases while supporting multimodal inputs and web search functionality.
- Balanced GPT-5 performance at significantly reduced cost ($0.25/$2.0 per million tokens)
- Maintains reasoning capabilities with automatic switching between fast and thinking modes
- Multimodal support for text and image processing with 400K context window
- Web search integration providing access to current information and real-time data
- Optimized for everyday tasks including personal use, small business applications, and routine workflows
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.