Here's what the update includes, who can use the feature, and where the controls are.
What Chrome 156 adds
PCWorld reports that the "What's New" page lists Media understanding as the only new feature in Chrome 156. When media understanding is enabled, you can ask Gemini in Chrome about the video or audio you're playing. Gemini can respond with answers, generate summaries, and more.
The build numbers are 156.0.8078.47/48 for Windows and macOS, and 156.0.8078.47 for Linux. According to Chrome Geek, ChromeOS 156 reached Chromebooks on the same day, October 20.
Google's help page is more careful about the wording. It says you can ask about audio and video content that you already played on media websites. After you watch or listen, you can use Gemini in Chrome to help you quickly understand and review the content, get a summary of the content, and recall specific details from the content.
The key phrase is "already played." Google describes this as a way to review media after you've watched or listened, not as live analysis of whatever is on screen. Google previewed the feature in a September study-tips blog post. There it said it was expanding Gemini's media skills on desktop beyond YouTube to podcasts and videos on other sites. It also said Gemini could help with "almost any audio or video file once you've played it through." That broad claim comes from Google, and we haven't tested it. Expect some sites to work better than others.
Not everyone agrees on the headline
PCWorld calls Media understanding the only new feature. Other outlets say otherwise. Chrome Geek writes that the big user-facing feature is talk to type, Gemini-powered voice typing for the web, and adds that it is a gradual rollout and availability varies by country and language. Google's Chrome Enterprise release notes also say that Chrome 156 introduces new Gemini features on Chrome on Android (live notification updates) and Desktop Chrome (AI-generated quiz feature).
What you get depends on which Google list you read and which staged rollouts reach you. Many of these features show up gradually, whatever version number you're on.
Section summary: Chrome 156 lets eligible users ask Gemini about audio and video they've already played. Talk to type and AI quizzes are also part of this release, but each one rolls out on its own schedule.
Who can actually use it
Updating to Chrome 156 doesn't guarantee you'll see the feature. Google's help page says Gemini in Chrome is not available to all users at this time. We're gradually releasing Gemini in Chrome, so it might not be available to you just yet.
Google lists these requirements for Gemini in Chrome on a computer:
- You must be 13 or older (or the applicable age in your country) and in a supported region.
- You need a Windows PC, a Mac or a Chromebook Plus.
- You need the latest version of Chrome.
- You must be signed in to Chrome. Gemini doesn't work in Incognito mode or in signed-out profiles.
- Your device must be set to a supported language.
- If you're over 18 and use a work or school Google Account, your administrator has to enable access.
- Parents using Family Link can turn off access for supervised children 13 and older.
PCWorld also points out that Gemini in Chrome is a different product from AI Mode in Google Search, which is an easy mix-up.
How to use Media understanding
Google documents these steps:
- Open Chrome on your computer.
- At the top of your browser, click Ask Gemini.
- You'll need to opt in the first time you use Gemini in Chrome. To opt in, follow the onscreen instructions.
- Play the video or audio on the media site.
- Ask Gemini about it, for example for a summary, an explanation of something confusing, or a specific detail.
What success looks like: Gemini answers in the side panel using the tab you're on. By default, Gemini in Chrome uses content from your current tab for its response.
How to turn it off
Google gives a direct address, which avoids hunting through menus: This setting is on by default. To turn it on or off, visit chrome://settings/ai/gemini and click the toggle next to "Media understanding."
Menu labels vary depending on whose instructions you follow. PCWorld gives the path as Settings → AI in Chrome → Gemini in Chrome. Google's help page says in the Settings menu, click AI innovations and then Gemini in Chrome. If you can't find either, use the chrome://settings/ai/gemini address, or type "gemini" into the Settings search box to see every related option.
Turning off Media understanding doesn't remove Gemini. Neowin reports that there's no master switch that lets you completely disable Gemini in Google Chrome. It says the regular settings mostly let you hide it, and points to a "Glic" flag in chrome://flags for people who want to go further. Flags are experimental and unsupported, and Google can change or remove them at any time. On managed PCs, use enterprise policy instead.
If you can't find Gemini at all
Google's troubleshooting advice:
- Sign in to Chrome with an eligible account. Signed-out and Incognito profiles don't get Gemini.
- Restart Chrome. If you've traveled recently, Chrome may still be using your previous location.
- Turn off your VPN.
- Make sure Windows (or macOS) is set to a supported language.
- Update Chrome. As a last resort, reset your Chrome flags.
- Virtual machines may restrict some features.
- Ask your IT admin whether your organization has disabled Gemini.
Privacy
This feature has Gemini working with media you've played, so it's worth knowing what gets sent. A guide from CtrlShiftCopy quotes Chrome's own wording that when you share the current tab, Chrome says the full page content, media and URL are sent to Google, and conversations about shared tabs may be reviewed by humans. If you watch sensitive recordings in the browser, like internal meetings, medical content or legal material, think carefully before leaving a default-on media setting enabled.
For IT admins
The Chrome 156 enterprise notes cover more than Media understanding. Google says that as early as Chrome 156, Chrome users can temporarily share saved Google Password Manager credentials with Gemini Spark to complete tasks on the third-party web applications. If enabled, each task requires explicit consent and biometric or device unlock. In addition, IT admins can control this feature via the GeminiSparkSettings enterprise policy, which is disabled by default.
Before you roll Chrome 156 out across your fleet, review your Gemini-related policies. Pay particular attention to work and school accounts, where Google says an admin must enable access.
Security fixes
PCWorld cites the Chrome Releases blog and reports that Chrome 156 fixes 353 security vulnerabilities:
- 266 were found by Google and 87 by outside researchers.
- Six are rated critical, five of them memory errors.
- 61 are high, 197 medium and 89 low.
- Bounties paid so far total $50,000.
PCWorld adds that none of the flaws are known to be exploited in the wild. GBHackers and Chrome Geek report the same total of 353. When we checked, though, Google's own release post didn't yet include a security breakdown, so treat the exact category counts as reported by PCWorld rather than confirmed by Google.
Even so, a release with critical memory-safety fixes means you should update now. Chrome updates itself, but Google says the release reaches users over days or weeks. To check or force an update, go to Help → About Google Chrome on Windows (Chrome → About Google Chrome on Mac), let it download, then relaunch the browser.
Bottom line: Update Chrome for the security fixes. Media understanding will show up when your account becomes eligible, and if you'd rather not use it, the switch is at chrome://settings/ai/gemini.