GPT-5 Nano
OpenAI · Tiny GPT-5 lane for routing, extraction, classification, and bulk jobs
Key facts
- Provider
- OpenAI
- Context window
- 400K tokens
- Max output
- 128K tokens
- Input price
- $0.05 / M tok
- Output price
- $0.4 / M tok
- Knowledge cutoff
- May 30, 2024
- Released
- Aug 7, 2025
- License
- —
Capabilities
ReasoningTool callingStructured outputFile attachmentsTemperature controlOpen weights
Reasoning options
- effort minimal · low · medium · high
Pricing
USD per million tokens, list API rates.
- Input
- $0.05
- Output
- $0.4
- Cache read
- $0.005
- Cache write
- —
Modalities
- Input
- Text, Image
- Output
- Text