Available today: GPT-5 in Microsoft 365 Copilot

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03 Nov 2025

Microsoft is excited to announce that GPT‑5—OpenAI’s best AI system to-date—is rolling out today in Microsoft 365 Copilot and Microsoft Copilot Studio across the world. GPT-5 is a significant leap in intelligence and becomes even more powerful when applied to work.

Reinvent productivity with Microsoft 365 Copilot

Bringing GPT-5 to Copilot on the day of its release is part of our commitment to make OpenAI’s latest models available to customers in Microsoft 365 Copilot within 30 days. Copilot delivers the latest AI innovation, tuned for work and tailored to your business needs—with the security, compliance, and privacy that you expect from Microsoft.

Here’s how GPT-5 shows up in Copilot:

For the first time, Copilot can take your prompt, understand it, and use GPT-5’s real-time router to choose the best model to reason over the prompt and craft a response.

For common or routine questions, Copilot prioritizes speed, using GPT-5’s smart, high-throughput modelto craft quick, succinct responses to your straightforward questions.

For complex or more open-ended questions, Copilot can now detect that the prompt requires advanced reasoning. In those cases, Copilot will use GPT-5’s deeper reasoning model, taking its time to craft a plan, gather and comprehend all relevant context, and check its work before providing a thorough response.

The Right Model for The Right Job

Copilot automatically selects the right model based on the context to more closely mirror how humans approach problems—whether that’s offering quick, intuitive answers to simple problems, or taking more time to apply deeper reasoning to answer more complex ones.

Say you’re a marketer considering request for proposal (RFP) responses from a few different agencies. You can ask Copilot to track down the responses and summarize each. It understands your simple request, scans your work data, and quickly comes back with the list you asked for.

Let’s go a step further and ask for Copilot’s help evaluating and stack-ranking the RFP responses. Copilot recognizes this is a more complex request and routes to GPT-5’s reasoning model. With the full context of your work data like documents, emails, meetings, and chats, Copilot applies relevant, proprietary context to a highly specific process, giving you a thoughtful recommendation for selecting an agency.

With GPT-5, Copilot can provide both fast, fluent responses and deep, reasoned analyses. This two-brain approach is what makes the GPT‑5 era of Copilot particularly powerful.

Get Started Today

GPT‑5 in Copilot is available starting today to reason over both web and work data for licensed Microsoft 365 Copilot users and will be rolled out to users without a license in the coming weeks.

Contact us about Microsoft 365 Copilot and start transforming work with Copilot today.

Source: Available today: GPT-5 in Microsoft 365 Copilot

Frequently Asked Questions

When can I use Copilot with GPT-5? Who gets access?

For users with Microsoft 365 Copilot licenses, GPT-5 is available today to reason over both web and work data in Microsoft 365 –– your calendar, emails, chats, documents, meetings and contacts –– to provide full contextual responses. These users will see a new “Try GPT-5” button in Copilot Chat. Once activated, Copilot will use GPT-5 for that session. Users with Microsoft 365 Copilot licenses will get priority access to GPT-5, including more predictable quality and performance.

For users without Microsoft 365 Copilot licenses, GPT-5 will begin rolling out today, and availability for all users is expected in the coming weeks. Users will get standard access.
Will GPT-5 be available in Copilot Studio?

Microsoft is also making GPT-5 available in Copilot Studio, our platform for building custom agents. Starting today, you can select GPT-5 as their agent’s primary model and use GPT-5 in custom prompts to enable their agents to take on more complex and ambitious business processes.
When should I use Researcher?

Earlier this year, Microsoft introduced Researcher, the advanced reasoning agent built on OpenAI’s deep research model. While GPT-5 dramatically enhances Copilot’s ability to handle complex, everyday prompts, Researcher is purpose-built for those times where you need deep, research-intensive work. It excels when you need exhaustive reasoning and synthesis across many sources, whether internal content or external websites. It’s ideal for projects like board-level briefs, competitive analyses, and comprehensive client prep.
What are some prompts I can try to see GPT-5 in action?

For all users with Microsoft 365 Copilot licenses, try the following:

“Read through my recent emails and chats and provide a comprehensive analysis of my communication style by identifying my core values, strengths, weaknesses, skills, and areas where I can improve professionally.”

“Get me up to speed on the latest plans related to [project/initiative]. Help me think through what to do next.”

“Reflecting on our [project], what went well and what didn’t? Can you draft a brief ‘lessons learned’ summary as if we were documenting a post-mortem for it?”

“Look at the last 5 work days, identify all the meetings where I was working on GPT-5, and give me a total number of hours I spent on the topic.”

For all users, including those without Microsoft 365 Copilot licenses, try the following:

“Look at the attached project plan and give me five substantive ways to make it better; include rationale for your responses and specific text to insert into the plan.”

“Use the attached spreadsheet with customer feedback to create a polished executive report that helps upper management decide where to prioritize resources in our next cycle.”

“We have a draft press release [document]. Find a couple of similar recent announcements on the web and then suggest how to make ours stand out.”

“As a financial compliance analyst, prepare a summary comparing the Dodd-Frank, Basel III, and MiFID II capital adequacy and reporting requirements for banks.”

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