GPT 5
by OpenAI
OpenAI's most advanced unified model released August 2025, combining reasoning and fast response capabilities in one system. Features adaptive routing that automatically switches between instant answers and deep thinking based on task complexity, achieving 94.6% on AIME 2025 and 74.9% on SWE-bench Verified.
- Unified reasoning system with automatic routing between fast responses and deep thinking modes
- State-of-the-art performance achieving 94.6% AIME 2025, 74.9% SWE-bench Verified, and 84.2% MMMU
- Significantly reduced hallucinations by 45% compared to GPT-4o and 80% reduction in thinking mode
- Enhanced coding capabilities excelling at frontend development and complex multi-step programming tasks
- 400K context window with comprehensive tool integration including web search and image generation
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 5.6 SolGPT-5.6 Sol is OpenAI's flagship model in the GPT-5.6 family, released July 9, 2026, for the most complex professional work spanning software engineering, long-horizon research, agentic tool use, and careful result refinement.
GPT 5.6 TerraGPT-5.6 Terra balances capability and cost efficiency for everyday production workloads in the GPT-5.6 family, released July 9, 2026.
GPT 5.6 LunaGPT-5.6 Luna is the fastest, most cost-optimized model in the GPT-5.6 family, released July 9, 2026, built for high-volume and latency-sensitive workloads.