Initial reports suggested that access to the o1 reasoning model in Copilot was unlimited, but this has proved to be false, with several users coming up against usage limits. In response Microsoft then upped the usage limit, with the Copilot account on X yesterday announcing: “Think Deeper limits for free and Pro subscribers have been expanded!”

Microsoft has made OpenAI’s o1 reasoning model free for all Copilot users, removing the need for a Copilot Pro subscription and expanding access to advanced AI capabilities.

OpenAI's o1 reasoning model usually requires a costly subscription, but it's now free to all Microsoft Copilot users. This move follows a surge in popularity for Chinese AI app Deepseek and its free reasoning model earlier this week.

Microsoft is making its AI assistant, Copilot, more intelligent and accessible by integrating OpenAI's o1 reasoning model for all users-without requiring a paid subscription. Previously available only to Copilot Pro and ChatGPT Plus subscribers, this advanced AI reasoning model is now free for every Copilot user.