In the fall, Microsoft unveiled its latest Copilot AI features, including Copilot Voice, a voice assistant that can be interrupted to have multi-turn conversations with you, and Think Deeper, which leverages OpenAI's o1 reasoning model to deliver higher-quality responses to complex prompts. Since last month, both features have been available to users for free. Now, Microsoft has made the offerings even more robust.

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Free and unlimited access to all Copilot users

On Tuesday, Microsoft announced that all Copilot users will have unlimited access to the Think Deeper and Voice features at no additional cost. This is a major advantage over ChatGPT Plus, which costs$20 per month, and grants access to ChatGPT Advanced Voice and o1, the OpenAI equivalent to these two features. 

Think Deeper

The o1 model underlying the Think Deeper feature was trained to "think before it speaks," and as a result, it takes a bit longer to process your query -- around 30 seconds, according to Microsoft. This is especially useful for STEM-related tasks such as coding, analysis, and advanced math problems. Other use cases include in-depth advice and planning.

OpenAI has kept its advanced reasoning model from free users, with the o1 model only available for paid subscribers, including ChatGPT Pro, Team, Edu, and Enterprise users. As a result, being able to access it for free in Copilot is a big opportunity for people who want to try it without shelling out the money.

The only caveat is that it doesn't have access to the internet, but Suleyman said in a comment on the X post that Microsoft is "working on it."

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. 

Copilot Voice

Copilot Voice is Microsoft's take on AI-powered voice assistants that mimic human conversations. Copilot Voice has four voices -- Wave, Meadow, Grove, and Canyon -- and is available across all the same platforms that you can access Copilot, including the app, standalone site, and Windows. 

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