OpenAI · OpenAI (GPT / ChatGPT)
GPT-5.4 nano
ActiveReleased 3 months ago· Mar 1, 2026Multimodal model
Cheapest model with GPT-5-generation capability; API-only, for classification/routing/bulk processing ($0.10/$0.40 per 1M).
- API string
- gpt-5.4-nano
- Context window
- 128K ctx
- Knowledge cutoff
- Dec 1, 2025
- Tier
- Fast
- Released
- Mar 1, 2026
Release & change timeline
1 event- Release
GPT-5.4 nano released
Cheapest GPT-5-generation model; API-only.
Part of the OpenAI (GPT / ChatGPT) version timeline. Catch Me Up — everything that changed across AI & smart home ↗