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OpenAI
GPT-5 Nano
The fastest, cheapest GPT-5 with reasoning
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See available modelsAbout the model
GPT-5 Nano is the most compact and economical variant of the GPT-5 lineup from OpenAI, with support for reasoning and images. It is designed for high-volume tasks where low latency and cost at scale matter, and it can switch on step-by-step reasoning for complex requests. The model understands pictures and screenshots, reliably calls tools (function-calling) and follows instructions. Its large context fits lengthy materials and long conversations. Its Russian is average.
Strengths
- The speed and economy of the GPT-5 lineup
- Optional reasoning for complex tasks
- Works with images and a large context
- Tool calling (function-calling) for agents
- Designed for high volume
Where to use it
- High-volume assistants and first-line support
- Fast agent scenarios with tools
- Analysis of images and screenshots
- Classification and structuring of data
- Real-time request processing
- Quick prototypes and demos