GPT-5 nano
GPT-5 nano is a deprecated small model aimed at summarization and classification. The current documentation points new cost-sensitive work toward GPT-5.6 Luna.
Deprecated API; check access details
A compact task tier from the original GPT-5 family
Its documented context is 400,000 tokens with separate input and output limits. The model takes text and images and returns text. Its August 2025 snapshot remains distinct from later nano and Luna names.GPT-5 nano official model documentation
Review an existing integration
Practical guidance. For short summaries, review whether important qualifications survive. For classification, define when the model must leave a case for review. Compare task-specific failure rates before replacing a large queue of requests.
Specifications & access
| Detail | Value and conditions |
|---|---|
| Status | Deprecated API; check access details |
| Access | API |
| Model identifiers | gpt-5-nanogpt-5-nano-2025-08-07 |
| Context window | 400,000 tokens Published context for this deprecated release GPT-5 nano official model documentation |
| Maximum output | 128,000 tokens Published maximum output, bounded by the remaining context GPT-5 nano official model documentation |
| Provider status | Deprecated in the current OpenAI model catalog; confirm remaining account access.GPT-5 nano official model documentation |
Related models
- GPT-5 Mini
OpenAI · GPT-5
GPT-5 Mini is a deprecated smaller reasoning release for defined tasks.
Launch date not confirmedDeprecated API; check access detailsAPI GPT-5 is a deprecated general reasoning and coding release.
Launch date not confirmedDeprecated API; check access detailsAPI