The new model offers performance improvements in reasoning, multimodal understanding and more.

OpenAI's new GPT-5.4 mini model offers performance improvements in reasoning, multimodal understanding and more.

OpenAI unveils small models GPT‑5.4 mini and nano

OpenAI (OPENAI) has launched GPT‑5.4 mini and nano, its most capable small models yet, according to the ChatGPT maker.

OpenAI shrinks GPT-5.4 for speed and lower costs

OpenAI’s GPT-5.4 mini and nano models cut costs and latency while staying close to flagship performance, giving developers faster AI options for real-time apps without sacrificing core capabilities.