GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger...
openai/gpt-5-nanoGPT-5 Nano is an API model from OpenAI, released on Aug 7, 2025, with a context window of 400,000 tokens, pricing of $0.05 per million input tokens and $0.4 per million output tokens. It accepts file, image, text input and produces text output.
At listed prices, a request with 10,000 input tokens and 1,000 output tokens costs about $0.0009.
Specs are sourced from OpenRouter and were last checked on Nov 3, 2026. Always confirm current pricing and limits with the provider before production use.
GPT-5 Nano supports a context window of 400,000 tokens.
GPT-5 Nano is listed at $0.05 per million input tokens and $0.4 per million output tokens on OpenRouter.
GPT-5 Nano was published on Aug 7, 2025.
GPT-5 Nano accepts file, image, text input and produces text output.