GPT-5 Nano
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...
The figures
- Made by
- OpenAI
- Model ID
- openai/gpt-5-nano
- Input
- $0.05 per million tokens
- Output
- $0.4 per million tokens
- Context window
- 400K tokens
- Longest answer
- 128K tokens
- Takes in
- text, image, file
- Gives back
- text
- Reasoning
- Yes
- Tool calling
- Yes
- Reads images
- Yes
- Open weights
- No
- Released
- 7 Aug 2025
Read on 3 Oct 2026.