OpenAI has quietly turned its ChatGPT extension for Google Chrome from a sidebar chat window into a full browser agent. The updated extension, version 1.26.1005.11759, can read the tabs you already have open, pull information from several of them at once, and — in its new Work mode — take actions inside those pages: sending messages, filling out forms, downloading files and grouping tabs. OpenAI says the upgrade works with every ChatGPT plan, including the free tier.
In chat mode, users can target specific tabs with an @chrome mention or simply ask a question that spans several pages. OpenAI's own examples read like shopping and research chores: comparing three sofa product pages by size, price, delivery time and return policy, summarizing a stack of articles in plain language, or matching up price pages from different sellers. The assistant now has the full chat history available in the sidebar, so follow-up questions do not require leaving the page you are on.
Work mode is the bigger change. It hands ChatGPT control of the tab through the same Computer Use capability that powers OpenAI's agentic products — GPT-6 Astra is currently the company's best model for screen-based work — and lets it operate inside sites where you are already logged in. OpenAI's demo flows include filling out a new dentist's intake form and adding the appointment to your calendar, or analyzing the terms of service of several contractors across tabs and drafting an email to the best fit.
That capability comes with a wide permission footprint. Installing or enabling the features can require the extension to read and change site data, access page debugging tools, manage tabs and downloads, and optionally read bookmarks and browsing history or show notifications. OpenAI gates each new website behind a consent prompt — allow once, always for this site, or always for all sites, the last of which the company itself flags as higher risk — and browsing history and file uploads or downloads need separate authorization.
The extension also works outside Chrome: OpenAI notes it runs in other Chromium-based browsers, including Microsoft Edge, Brave and Opera. The sidebar upgrade gives ChatGPT access to the user's full conversation history without navigating away from the current page, which makes the assistant feel closer to a persistent browser companion than an add-on.
The strategic backdrop is telling. OpenAI launched its own browser earlier this year, then shut it down on August 9, and has since poured its browser ambitions into the Chrome extension instead — meeting users where 3-plus billion Chrome users already are rather than asking them to switch. Rivals have taken the same route: Perplexity's Comet and The Browser Company's Arc both began as standalone products before shipping extension-based assist experience.
For users, the trade-off is straightforward: a browser assistant that can genuinely complete multi-step chores, in exchange for an agent that can see everything you have open. Security-minded reviewers of the update suggest closing sensitive logged-in tabs — banking, email, medical portals — before enabling Work mode, and relying on the per-site approval flow rather than the all-sites setting. The tab bar, it turns out, is now part of your AI attack surface.
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