GPT-5 Nano
OpenAI
openai/gpt-5-nanoGPT-5 Nano is the smallest and cheapest model in the GPT-5 family, optimized for extremely fast, low-latency responses. It suits simple classification, extraction, and high-throughput tasks where cost and speed dominate.
Cost rate
0.1x
Context
400K
Released
Aug 7, 2025
Input
TextImageFile
Output
Text
Support
ReasoningTool callingStructured outputs
Best at
The categories where this model ranks highest.