OpenAI’s new flagship GPT model is made for AI agents

GPT-5.4 is out now on ChatGPT (where it goes by the name GPT-5.4 Thinking) as well as on the OpenAI API and OpenAI’s coding ...

OpenAI’s new GPT-5.4 model makes ChatGPT better at handling your complex, multi-step workflows

The model is rolling out across ChatGPT, the API, and developer tools, with new variants aimed at both everyday users and enterprise workloads. One of the biggest changes is the model’s ability to ...