GPT-5.4 Mini is OpenAI's strongest mini model yet for coding, computer use, and subagents. Brings many of the strengths of GPT-5.4 to a faster, more efficient model designed for high-volume workloads with reasoning token support.
- Strongest mini model yet for coding, computer use, and subagents with GPT-5.4 class intelligence.
- 400,000-token context window with 128,000 max output tokens and reasoning token support.
- Full tool support including web search, file search, image generation, computer use, and MCP.
- Optimized for high-volume workloads with fast speed and improved efficiency.
- Pricing is $0.75 per 1M input tokens and $4.50 per 1M output tokens (cached input at $0.075).
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.