After weeks of rumors, OpenAI has officially introduced GPT-5, its most advanced AI model so far — and it’s already available for users to try. The reveal caught many by surprise, given the scope of improvements and capabilities the model brings to the table.
Adding to the excitement, Microsoft announced that GPT-5 is being integrated into Microsoft 365 Copilot. The news came via the company’s official blog, where Microsoft described the upgrade as a significant step forward in performance, versatility, and workplace applications.
With these changes, both companies are positioning GPT-5 not just as a technological advancement, but as a tool set to transform productivity, creativity, and problem-solving in everyday workflows.
Everything you can do with GPT-5 in Microsoft 365 Copilot
Microsoft says getting GPT-5 into Copilot on the same day OpenAI announced it was a tough job — but one they were committed to. The result is a Copilot that can offer deeper, more useful help, tailor itself to what each person needs, and keep privacy front and center.
Under the hood, Copilot now reads messages more fully and uses an internal router to pick the best variant of GPT-5 for the task. That means it can choose the right approach automatically instead of using a one-size-fits-all response.
You’ll notice the difference in everyday use: Copilot can answer casual questions or carry on a conversation faster, while keeping answers accurate and readable.
For tougher, open-ended problems it behaves differently. If a prompt needs extra reasoning, Copilot will call the full GPT-5 pathway, take time to sketch a plan, gather and weigh context, and run checks before giving you the final reply.
GPT-5 will help Copilot to be more precise
One of the biggest upgrades GPT-5 brings to Copilot is its ability to automatically pick the most suitable model based on the text it receives — aiming to tackle problems the way a human might.
This shift turns Copilot into a far more capable and adaptable assistant. It can grasp the exact nature of a request, switch to the most effective model, and deliver the answer that best fits the situation.
Responses are still quick and smooth, but now they’re backed by deeper analysis before being shared. It’s a meaningful improvement that makes the tool far more valuable for anyone who relies on it.
How to start using GPT-5 in Copilot?
As of today, August 9, 2025, GPT-5 is officially available in Copilot, giving Microsoft’s AI assistant the ability to reason with more depth and sophistication. For now, the upgrade is limited to Microsoft 365 Copilot license holders, though Microsoft plans to roll it out to non-licensed users in the coming weeks.
Those with access will notice a new “Try GPT-5” button. Activating it switches Copilot to the new model for that session, unlocking all of its enhanced capabilities.
GPT-5 is also now an option in Copilot Studio, which has seen several recent updates. When building custom agents, creators can set GPT-5 as the primary model for more advanced performance.
Importantly, GPT-5 doesn’t replace Microsoft’s existing “Researcher” reasoning agent, which remains the go-to choice for in-depth research and synthesis across numerous sources.
Microsoft has even published example prompts on its website so users can test the new features and see the improvements in action.
