Originally launched as an experimental feature in Copilot Labs, Think Deeper is now enhanced with OpenAI’s o1 reasoning model, enabling the Copilot AI chatbot to deliver more comprehensive and well-reasoned responses.

To access the feature, sign into Copilot using your Microsoft account. Once you do, next to the text box, you will see the "Think Deeper" button, which you can click to activate the model when answering your prompt. As a free user at the time of writing this article, I already had access to the feature.