OpenAI's new small models are faster and cheaper than GPT-5.4—exactly what developers and businesses actually need.
OpenAI (OPENAI) has launched GPT‑5.4 mini and nano, its most capable small models yet, according to the ChatGPT maker.
OpenAI just launched GPT 5.4 mini and nano models which are now live in the API, Codex, and ChatGPT with improved coding capabilities.