Microsoft on July 28, 2025, began rolling out an experimental Copilot Mode for its Edge browser that can peer into your open tabs and act on what it finds. The opt-in feature, available on Windows and Mac, marks the first time the company’s AI assistant can directly interact with live web pages to help you navigate, compare, and complete tasks hands-free.

Unlike the existing Copilot sidebar, which mostly chats about the page you’re currently viewing, the new Copilot Mode pulls information from multiple tabs simultaneously. You can ask it to summarize a set of open articles, compare product prices across shopping sites, or fill out a form with details pulled from another page. Voice control is baked in, and the assistant can perform basic actions like clicking links or scrolling — all within a dedicated, full-screen browsing interface.

Microsoft is positioning the feature as a “conversational browser” that combines search, AI chat, and web navigation. It’s not a silent background agent; you see exactly what Copilot is doing on screen, and it asks for confirmation before taking sensitive actions like submitting a form or making a purchase.

What Actually Changed in Edge

The change isn’t a subtle sidebar redesign. Copilot Mode (internally codenamed “Project Mercury,” according to people familiar with the development) is a whole new way to use Edge. When you enable it, the browser transforms: the address bar becomes a command line for natural-language instructions, and a persistent panel shows Copilot’s thinking steps, sources, and current tab context.

Key capabilities include:

  • Cross-tab awareness: Copilot can read content from multiple open tabs, not just the active one. If you’re researching a trip and have tabs open for flights, hotels, and reviews, you can ask “Which hotel from my open tabs is cheapest and has the best rating?” and get a synthesized answer with links.
  • Action execution: The assistant can click buttons, fill text fields, and navigate between pages. For instance, you could say “Find me a highly rated laptop under $800 using the tabs I have open, add it to my cart on the first site, and stop before checkout.” Copilot will browse, compare, and act, pausing for your approval at each major step.
  • Voice-first mode: A hands-free mode lets you speak commands and hear responses, turning Edge into a voice-controlled browser reminiscent of a smart display. Microsoft says it’s designed for accessibility and multitasking—imagine following a recipe with your hands covered in flour.
  • Visual grounding: Copilot highlights the elements it’s interacting with, drawing temporary boxes around buttons or text areas, so you can follow its thought process.

Technically, this is built on a fine-tuned version of Microsoft’s GPT-4o model that has been trained on browser interaction patterns. The assistant runs partially on-device for latency and privacy, according to a Microsoft advisory, with more complex reasoning offloaded to the cloud only when needed. It’s available in Edge version 128.0.2739.0 and later, but you must enable a flag at edge://flags/#copilot-mode and restart the browser.

What It Means for You

For everyday users, Copilot Mode could remove the drudgery of tab-hopping. Instead of copying details from one site to another, you can offload the legwork. Research for a school project, comparing insurance plans, or filling out repetitive forms become conversational tasks. The learning curve is minimal if you’ve used any modern AI chatbot; you just type or speak what you want done.

But there’s a privacy trade-off. To function, Copilot must read everything on your open tabs—including logged-in sessions, personal emails, and sensitive documents. Microsoft states that in the opt-in mode, no data is used to train its models, and the tab-reading capability respects “site permissions and user consent.” However, the practical reality is that once you grant permission, the assistant has broad access. You’ll want to be deliberate about which tabs you leave open when using the feature.

For power users and developers, the feature could become a productivity force multiplier. Imagine debugging a web app with documentation, Stack Overflow, and your staging site all open; you could ask Copilot to “check if the login flow matches the pattern described in the first tab, and test it on the staging site.” Meanwhile, extension developers might need to ensure their tools are compatible with the new scripting environment.

For IT administrators, Copilot Mode raises familiar enterprise data governance concerns. Will the feature respect Microsoft Purview data loss prevention policies? Can it be disabled via group policy? Early documentation (spotted in a draft support page) suggests that the mode is off by default and controllable through the CopilotModeEnabled policy, but details are thin. Administrators managing regulated environments should test the feature in isolation before considering broader rollout—and expect Microsoft to clarify enterprise controls in the coming weeks.

How We Got Here

Microsoft’s path toward a tab-aware AI browsing agent has been a steady escalation. It started in early 2023 with Bing Chat in the Edge sidebar, which could only answer questions about the active page. With Windows Copilot later that year, the assistant gained system-level hooks but no deep browser integration. The turning point came in mid-2024, when rumors circulated about an internal Microsoft project to let Copilot traverse web pages like a human. Competing browsers were already dipping their toes in: Arc added AI-powered tab summaries and renaming, while Google’s Gemini began to understand page context in Chrome.

At Build 2025, Microsoft teased a “Copilot Browsing Agent” capable of completing multi-step tasks. The July 28 release is the first public, albeit experimental, incarnation of that vision. It comes as the AI landscape grapples with the concept of “AI agents”—software that not only chats but acts. Microsoft clearly wants Edge to be the primary environment where people trust an AI to interact with the open web on their behalf.

This isn’t happening in a vacuum. The rise of large-language models has forced browser makers to rethink the very concept of a browser. If the web is a sea of information, the browser becomes less about manual navigation and more about delegation. Microsoft’s move with Copilot Mode is its opening gambit in that new world.

What to Do Now

If you’re curious, you can try Copilot Mode today, but approach it with a tester’s mindset.

Enable it cautiously:
1. Make sure you’re running Edge 128.0.2739.0 or newer (check edge://settings/help).
2. Go to edge://flags/#copilot-mode and set it to “Enabled.” Restart the browser.
3. A new Copilot icon will appear in the toolbar. Click it, and follow the setup prompts, which include granting permission for the assistant to read your open tabs.

Configure privacy and safety:
- Before enabling, close any tabs you don’t want Copilot to see—banking sites, work email, health portals.
- In Settings > Privacy, search and services, review “Copilot Mode data handling.” You can set it to delete interaction history after every session.
- Use Edge’s built-in profile management to create a dedicated browsing profile for Copilot-heavy tasks, isolating it from your everyday data.

Learn the command syntax:
Copilot Mode works best with clear, specific instructions. Instead of “find me a flight,” say “using my open tabs, find the cheapest round-trip from New York to London for October 10–20, and navigate to the checkout page on that flight’s site.” You can always refine your request in a conversational thread.

Keep an eye on resource usage:
Early testers report that Copilot Mode increases CPU and memory usage by 15–25% when actively monitoring multiple tabs. If your machine is older, you might notice fan noise or slowdown during complex tasks. Microsoft says optimizations are ongoing.

Opt out at any time:
The feature is entirely opt-in. If you decide it’s not for you or you encounter bugs, disable the flag and restart Edge. You can also provide feedback via the “Send feedback” button in the Copilot panel—the team is actively iterating.

Outlook

Copilot Mode in Edge is clearly a stepping stone toward more autonomous AI agents that can handle entire workflows across applications. Microsoft has hinted that the technology will eventually extend beyond the browser—think Copilot in Windows managing file operations or Excel tasks based on email instructions. For now, Edge is the testing ground.

In the short term, expect this experimental mode to graduate to a stable feature within a few months if feedback is positive. Microsoft must also navigate the regulatory and ethical minefield of AI that can act on the web. How do we prevent misuse, ensure accessibility, and maintain user trust? Those questions aren’t going away.

For the average Windows user, the July 28 launch is a peek at a future where your browser doesn’t just show you the web—it acts in it, with you as the director. The open question is whether we’re ready to hand over the reins.