GPT-5.4 mini is OpenAI’s small model — low cost and quick, for the same high-volume, well-scoped work Haiku handles on the Anthropic side: routing, extraction, classification.
Best for: cheap, high-volume OpenAI calls.
gbrain
Models
GPT-5.4 mini
Small, fast, and cheap on OpenAI.
A model your brain can run · gbrain.io
OpenAI
GPT-5.4 mini.
Small, fast, and cheap on OpenAI.
- Vendor
- OpenAI
- Released
- Jul 2026
- Model id
- gpt-5.4-mini
Run GPT-5.4 mini in your brain.
Pick it per brain from the model settings, switch any time. Inference is included in your plan, or bring your own key.