ChatGPT now tracks your browsing. Privacy advocates sound the alarm.

If you use ChatGPT's free tier to draft emails, briefs, or product copy for clients, and you also shop, browse, or scroll on other sites during the same session, here's the question worth sitting with: does what you tell a chatbot now follow you around the rest of the internet?

A thread on r/ChatGPT this week raised exactly that concern, with users reporting what they describe as an "ad collector" tied to ChatGPT that appears to link activity across other websites back to a user's account. OpenAI has not published a detailed technical breakdown of what this feature does or how it decides what to collect, so everything below should be read as a reported concern from users, not a confirmed policy change. That distinction matters, because the fix looks very different depending on whether this is a rolled-out feature, a test, or a misread setting.

Where the major assistants stand on ads and account-linked tracking

Ad-supported AI is not new. What is new, if the Reddit reports hold up, is an assistant tying prompt activity to browsing behavior on unrelated sites through a single persistent account rather than through the browser cookies people are used to blocking. Here is how the main options compare on the criteria that actually matter for someone worried about this.

Assistant	Ads in free tier	Tied to an existing ad account	User-facing controls	Company confirmation
ChatGPT	Reportedly, per Reddit users	Unclear, disputed	Data controls exist in settings; scope of new collector not documented	Not confirmed by OpenAI at time of writing
Gemini	No direct ads in chat, but lives inside a Google account already built for ad personalization	Yes, by design of the Google account system	Standard Google ad settings apply	Confirmed, longstanding Google policy
Perplexity	Has publicly discussed ad placements in its free search tier	Not tied to a broader ad network by default	Account-level, limited	Publicly acknowledged business direction
Claude	No ads, subscription-first model	No	Not applicable	Confirmed by Anthropic's public positioning

For a solo founder or freelancer handling client work in ChatGPT's free tier, the practical read is this: assume anything typed there could eventually inform ad targeting until OpenAI says otherwise in writing. For someone already inside the Google account ecosystem, Gemini adds no new exposure, since the linkage was already built into the account. For anyone allergic to this entire category of risk, Claude remains the cleanest option on paper, simply because Anthropic has staked its positioning on not doing this.

One login beats a thousand cookies

Cookie-based tracking has a built-in weakness: it is per-browser and per-domain. Clear your cookies, switch browsers, use a different device, and the trail breaks. A logged-in AI assistant does not have that weakness. One account, used from your phone, your laptop, and your work computer, produces a single continuous identity that survives all of it.

That is the actual shift here, if the Reddit reports are accurate. It is not that ad tracking exists, advertisers have tracked browsing for two decades. It is that the tracking identity moved from something disposable (a cookie) to something durable (a logged-in AI account you use daily for work). Halve that persistence, say by using a fresh, logged-out session for anything sensitive, and the exposure drops sharply. Double it, by staying logged in across every device and never touching a privacy setting, and the profile ChatGPT or any ad partner could theoretically build gets a lot more complete, a lot faster, than cookie-based tracking ever managed.

A freelance copywriter's Tuesday, if the reports are true

Picture a freelance copywriter, call her Dana, who uses ChatGPT's free tier every morning to draft product descriptions for a skincare client. She asks ChatGPT to help punch up copy for a retinol serum. Two hours later, still logged into the same ChatGPT account on her phone, she browses a skincare retailer's site for reference images and pricing comps, then opens Instagram, where she starts seeing ads for retinol serums from brands she has never searched for directly.

That sequence is exactly what the Reddit thread describes users noticing. On its own, it is not proof of anything, ad networks infer interests from all kinds of signals, and coincidence is real. But if an assistant is quietly logging prompt content and cross-referencing it against browsing signals tied to the same account, that would explain the pattern users are reporting without needing any single confirmed leak.

The practical move for Dana, and for anyone in the same position, is not to panic, it is to check three things: whether ChatGPT's settings expose any ad personalization toggle, whether a Temporary Chat mode is available for client work that should not persist, and whether the account is logged in across devices that do not need it to be. None of that requires OpenAI to confirm anything. It just reduces the surface area while the reports get sorted out.

If you're weighing whether to keep sensitive client work inside ChatGPT's free tier at all, it's also worth comparing how ChatGPT stacks up against Gemini on data handling, or how Claude compares to Perplexity if ad-free use matters more to you than raw capability. For more on how quickly claims like this can outrun what companies have actually confirmed, see our piece on separating LLM hype from reality. OpenAI's current privacy policy, for whatever it's worth right now, is posted at openai.com/policies/privacy-policy, and the FTC's general guidance on ad tracking is at ftc.gov.