GPT-5 Nano is the fastest, lowest-cost version of OpenAI's GPT-5 reasoning model, suited to summarization and classification tasks. It takes text and image input and produces text output, with a 400K-token context window and up to 128K output tokens.
Modalities
In / out price
$0.05 / $0.40per 1M
Cached price
$0.005per 1M
Context
400K
Max output
16K
Providers
1 routeCompare providers by price, privacy, and speed.
| Anonymous | $0.05 | $0.40 | $0.005 | 400K | 16K | — | — |
Privacy
1 / 4Anonymous routing
Anonymous tier
- Anonymous
- Private
- TEE
- E2EE
Your identity is hidden from the inference provider. The inference provider can see prompt content; zero retention is not guaranteed. Learn more
Features
4Streaming
Tool calling
Reasoning
Prompt caching
Uptime
FAQ
Common questions about GPT-5 Nano.