Microsoft is allowing free access to OpenAI's o1 model through the Think Deeper feature in Microsoft Copilot.This feature is available to Microsoft 365 users and can be accessed through the Copilot web-based chat or the downloadable app.By enabling Think Deeper, users can receive more detailed and in-depth responses to their queries.Previously, the o1 model was only accessible through OpenAI's paid tiers, but now it is free for Microsoft users.