➀ Microsoft provides unlimited free access to OpenAI's o1 model, which was released in December and costs up to $200 per month.

➁ The o1 model is designed to be more thoughtful and implement a step-by-step chain-of-thought process, making it excel in specific tasks and categories of questioning.

➂ Microsoft's Copilot users can now access this new functionality by selecting the 'Think Deeper' toggle option.