Google Chrome silently downloads a 4GB AI model, researchers warn

techMay 7, 202623145

Google Chrome downloaded a 4 GB Gemini Nano on-device AI model into a folder named OptGuideOnDeviceModel on users' machines without explicit opt-in. The model is stored as weights.bin at %LOCALAPPDATA%\Google\Chrome\User Data\OptGuideOnDeviceModel, and Chrome provides no user opt-out other than enterprise management tools. You can disable it by toggling Optimization Guide On Device Model at chrome://flags, restarting Chrome, and deleting the folder. Security and privacy researchers say the silent 4 GB install raises consent and local-storage concerns, magnifies energy and carbon costs at billion-device scale, and could conflict with EU privacy rules.

✨ ʟᴇɢꜱ ʙᴇɴᴇᴅɪᴄᴛ

@maybecam.blacksky.app

did this + some research in URL: chrome://flags/ search "gemini nano" disable items found search "on device" disable items found in URL: chrome://settings/ai turn off "history search" and "help me write" this all fully disables the AI summary that generates when you google something! yay.

5190d ago

heiseonline

@heise.de

Berichten zufolge lädt Google Chrome ungefragt 4 GByte KI-Dateien herunter. Dabei entstehe viel CO₂. Es ist jedoch komplizierter. #Chrome

1790d ago

David Emmett

@motomatters.com

Disable the 4GB AI LLM model that Google Chrome downloads on Linux cd ~/.config/google-chrome/OptGuideOnDeviceModel/2025.8.8.1141 rm weights.bin touch weights.bin chmod 0600 weights.bin cd .. sudo chown -R root:root *

1791d ago

Sho2

People still use chrome is my biggest takeaway. Privacy focused people should look to Mullvad Browser (not chrome based) Corpo will be trying to slip this crap in every other day now. OS = Linux (CachyOS for me) Browser = Mullvad Services = Proton Mail/VPN/Cloud Storage.

AlternativeTo

@alternativeto.net

⚠️ Google Chrome is silently auto-installing a 4 GB Gemini Nano AI model file on user devices without any consent, enabling AI features by default. Users must disable AI features completely or uninstall Chrome to remove this large AI model file. alternativeto.net/news/2026/5...

1491d ago

Windows Central

@windowscentral.com

Chrome is quietly installing a 4GB file to support its Gemini Nano AI onto PCs — and reinstalling it if it's removed. Google says it's designed to protect your privacy, and can actually be disabled.

1590d ago

Marty Huntford 🎞️✂️🎮🖥️ ((Now in Stereo))2

Yeah, Google also said that Gemini could be disabled from paid Workspace accounts, and that turned out to be a lie as well.

Gib Riel-Delano 🇵🇱 💙💛

@thatonegib.bsky.social

www.thatprivacyguy.com/blog/chrome-... "Chrome did not ask. Chrome does not surface it. If the user deletes it, Chrome re-downloads it." "...If the user deletes it, Chrome re-downloads it." They don't care even once they're caught.

Screenshot of the article, saying:

"Two weeks ago I wrote about Anthropic silently registering a Native Messaging bridge in seven Chromium-based browsers on every machine where Claude Desktop was installed [1]. The pattern was: install on user launch of product A, write configuration into the user's installs of products B, C, D, E, F, G, H without asking. Reach across vendor trust boundaries. No consent dialog. No opt-out UI. Re-installs itself if the user removes it manually, every time Claude Desktop is launched.

This week I discovered the same pattern, executed by Google. Google Chrome is reaching into users' machines and writing a 4 GB on-device AI model file to disk without asking. The file is named weights.bin. It lives in OptGuideOnDeviceModel. It is the weights for Gemini Nano, Google's on-device LLM. Chrome did not ask. Chrome does not surface it. If the user deletes it, Chrome re-downloads it."

589d ago

Jorma Karvonen

@karvjorm.bsky.social

Harva tiesi tätä: Google Chrome lataa tietokoneelle 4 gigatavun tekoälytiedoston jos tilaa on Kyse on paikallisesti toimiva Gemini Nano -tekoälymallista ja sen painoista, ja weights.bin-tiedoston koko voi nousta jopa noin neljään gigatavuun. mobiili.fi/2026/05/06/h...

790d ago

Thomas McNicholas

@turquoisedays.bsky.social

Google Chrome Is Silently Downloading a 4GB Gemini Nano AI Model to User Devices Without Consent - gHacks Tech News www.ghacks.net/2026/05/06/g...

391d ago

Corbin Davenport

@corbin.io

I'm not gonna link to the article everyone is sharing about the Chrome AI model, because it has a lot of weird climate change misinformation. Gemini Nano is not a video generator model or Claude Code. There should still be more controls, though, and that's part of why I made Just the Browser.

491d ago

CryptoFox News

@cryptofox.news

Google Chrome caught silently downloading a 4GB "weights.bin" AI model (Gemini Nano) to users' devices without consent, per Tom's Hardware. Security researcher Alexander Hanff warns this could violate EU data laws, add bandwidth costs, and re-downloads if deleted. 😬 #Chrome #AI #Privacy #GDPR

391d ago

Lee Crawford

@vampire337.bsky.social

PSA: If you use Google Chrome on your PC, phone or tablet, they've taken 4GB of your storage for a local generative AI model, without asking for consent. Here's how to opt out and reclaim your space & control of your devices: chromeenterprise.google/policies/#Ge...

Supported on:
Google Chrome (Android) since version 142
Google Chrome (Linux, Mac, Windows) since version 124
Description:
Configure how Google Chrome downloads the foundational GenAI model and uses for inference locally.

When the policy is set to Allowed (0) or not set, the model is downloaded automatically, and used for inference.

When the policy is set to Disabled (1), the model will not be downloaded, and the existing model (if already downloaded) will be deleted.

On desktop platforms, model downloading can also be disabled by ComponentUpdatesEnabled.

0 = Downloads model automatically
1 = Do not download model
Supported features:
Applied to browser without restart. Note that some ongoing tasks may not be affected.

391d ago

Laura Malvoyante

@lauramalvoyante.bsky.social

Yet another reason not to use Google Chrome 😒 www.cnet.com/tech/service...

390d ago

Aditya Mitra

@adityamitra.bsky.social

do you understand what just happened to your computer.. Google Chrome secretly downloaded a 4GB AI model onto your device. Without asking.. Without telling you.. It's called weights.bin. It lives deep in your system folders. It powers Gemini Nano - Google's on-device AI. (1/4)

290d ago

jbuchana, NOW is the time to Resist!

@jbuchana.bsky.social

Google Chrome 'silently' downloads 4GB AI model to your device without permission, report claims — researcher says practice may violate EU law, waste thousands of kilowatts of energy | Tom's Hardware www.tomshardware.com/tech-industr...

89d ago

AI Daily Post

@aidailypost.com

Looks like Gemini Nano is pulling the plug on low‑end Chrome devices—auto‑uninstalling to save RAM. Wonder how this will affect devs and AI fans? Dive in for the full scoop. #GeminiNano #ChromeLite #LLM 🔗 aidailypost.com/news/googles...

189d ago

3 sources

benchmark.rsGoogle Chrome krišom instalira 4 GB veliki AI model na računar, bez dozvole i mogućnosti da ga korisnik obriše thatprivacyguy.comGoogle Chrome silently installs a 4 GB AI model on your device without consent. At a billion-device scale the climate costs are insane. — That Privacy Guy!gizmodo.comGoogle Chrome Is Downloading a 4GB AI Model Onto Your Device Without Consent, Researcher Warns

Canvas LMS hacked, students locked out during finalstech Sam Altman's management style scrutinized at OpenAI trialtech Google Chrome silently downloads a 4GB AI model, researchers warntech

Google Chrome silently downloads a 4GB AI model, researchers warn

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