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

OpenAI has released two compact models in its GPT‑5.4 family, branded GPT‑5.4 mini and GPT‑5.4 nano, and is promoting them as small but capable options for developers and device makers. The company points to scores on academic benchmarks for reasoning,

OpenAI's Latest AI Models Are Built for Speed

OpenAI just launched GPT 5.4 mini and nano models which are now live in the API, Codex, and ChatGPT with improved coding capabilities.

Over the last week, OpenAI’s place atop the AI model hierarchy has been heavily challenged by Chinese model DeepSeek. Today, OpenAI struck back with the public release of o3-mini, its latest simulated reasoning model and the first of its kind the company ...