# GPT-5 nano: API availability

GPT-5 nano: API availability. First seen 13 Sep 2026 Catalogues list a 400,000 tokens context window. 11 evidence links.

- Kind: Sighting
- Developer: OpenAI
- Confidence: Confirmed
- First seen: 2026-09-13T22:35:52.903Z
- Model: [GPT-5 nano](https://alexgetman.com/models/openai/gpt-5-nano/)
- Canonical: https://alexgetman.com/signals/2026/09/13/gpt-5-nano-high/

## Evidence links

- [Arena · leaderboards](https://platform.openai.com/docs/models/gpt-5-nano)
- [OpenCode · discovery](https://opencode.ai/data/openai/gpt-5-nano)
- [OpenRouter](https://openrouter.ai/openai/gpt-5-nano)
- [Artificial Analysis · benchmarks](https://artificialanalysis.ai/models)
- [OpenRouter](https://openrouter.ai/openai/gpt-5-nano:batch)
- [Vercel AI Gateway](https://vercel.com/ai-gateway)
- [OpenAI · pricing](https://developers.openai.com/api/docs/pricing)
- [OpenAI · model index](https://developers.openai.com/api/docs/models/gpt-5-nano)
- [models.dev · catalogue](https://models.dev/#databricks-gpt-5-nano)
- [models.dev · catalogue](https://models.dev/#gpt-5-nano)
- [OpenAI · deprecations](https://platform.openai.com/docs/deprecations)