OpenAI’s latest update lets ChatGPT users choose how fast GPT-5 thinks: How the new feature works

OpenAI has introduced a new feature that gives ChatGPT users more control over how quickly GPT-5 with Thinking responds. The update, announced on X on September 18, allows Plus, Pro and Business subscribers to choose the “thinking time” of the model directly from the message composer on web.

OpenAI adds speed control to GPT-5 Thinking

Previously, GPT-5 with Thinking often took longer to generate responses, as the model was designed to reason more carefully before answering. Many users, however, said they wanted more flexibility to balance depth and…