Published July 11, 2026
Short answer: yes, Grok saves your chats — and by default xAI uses them to train its models. Your conversation history sits on xAI's servers for as long as your account exists, and unless you change a setting, what you type helps improve Grok. There is also a wrinkle unique to Grok: it is wired into X, and in 2025 a "share" feature quietly put hundreds of thousands of conversations on Google.
This guide decodes xAI's privacy policy in plain English: what Grok keeps, whether it trains on your chats, how the X connection changes things, what that public-links incident actually was, and how the consumer app differs from the business API. Policies change, so treat this as an informed starting point and confirm the current terms for your own account.
The Short Answer: Yes, and It Trains on Them by Default
Your normal Grok conversations are saved to your account so you can return to them — ordinary chat-app behavior. The part worth pausing on is what xAI does with them. According to xAI, conversations with Grok are used to train and improve its models by default. It is an opt-out system: unless you turn the setting off, your prompts feed the training pipeline.
So "does Grok save my chats?" is really two questions — is it stored (yes, on xAI's servers while your account is active) and is it used to train Grok (yes, unless you opt out). Both answers lean less private than many people assume.
Training on Your Conversations — and How to Opt Out
xAI lets you decline training, but you have to go find the switch. In the Grok app it lives under Settings → Data Controls, and on grok.com under Settings → Data, as an "Improve the model" toggle. Turning it off stops future conversations being used for training.
A few honest caveats:
- The opt-out is not retroactive — it does not pull data already collected out of the training pipeline.
- Opting out of training does not stop xAI from reviewing conversations for safety and policy enforcement.
- Even opted out, your history is still stored on xAI's servers — accessible to xAI, subject to legal requests, and tied to your account's existence.
xAI also offers a Private Chat mode (the ghost icon): those conversations do not appear in your history, are not used for training, and are deleted from xAI's systems within 30 days — the closest thing to a "temporary chat," with the same limitation that the prompt is still processed to answer you.
The X Connection: Your Posts Can Train Grok Too
Grok is xAI's model, and xAI is tightly linked to X (formerly Twitter). That adds a second data stream most people miss: by default, your public X posts and your interactions with Grok on X can be used to train Grok. X exposes its own control for this in its privacy settings, separate from the Grok app's toggle. If you use Grok inside X, it is worth turning both off — the Grok "Improve the model" setting and the X data-sharing setting.
The 2025 Incident: Shared Grok Chats Showed Up on Google
In August 2025, security researchers and journalists found that Grok's "share" feature was making conversations public. Clicking share generated a unique web link — and those links were left open to search engines, so Google indexed them. Reporting at the time (Forbes, TechCrunch, and others) put the number of exposed conversations in the hundreds of thousands, some containing intimate medical and personal questions, personal details, and in at least one case a password a user had pasted in. Unlike ChatGPT's share feature, Grok's did not warn that a shared chat could become public.
The lesson is broader than one bug: once a conversation lives on a provider's servers, a feature you did not fully understand — or a future change to how those servers work — can expose it. It is a concrete reason to be careful about what you put into any account-tied chatbot, and to check exactly what a "share" button does before you use it.
How Long xAI Keeps Your Grok Data
- Regular conversations: kept on xAI's servers for as long as your account is active. Deleting a chat removes it from your visible history, but — as with most providers — backups and safety retention give xAI latitude on how long copies persist.
- Private Chat: deleted from xAI's systems within 30 days.
- If you delete your account: your access ends and your history goes with it, though the same backup and legal-hold caveats apply to timing.
Consumer Grok vs the Business API: What Applies Where
As with other providers, "Grok" is not one policy. How your data is treated depends on how you reach it.
- Consumer Grok (the Grok app, grok.com, and Grok inside X): trained on by default, history stored while your account is active, opt-outs available but not retroactive.
- The xAI API: markedly stricter. xAI states it never trains on your API inputs or outputs without your explicit permission. API requests and responses are retained for 30 days for abuse monitoring, then automatically deleted.
- Enterprise with Zero Data Retention (ZDR): prompts, completions, and metadata are processed in real time but never stored — no record remains after the response, and enterprise terms confirm no training on that content.
So the honest answer to "does Grok save my chats?" is: on the consumer app, yes and it trains on them by default; on the API, only briefly and never for training; with enterprise ZDR, not at all.
What About Uploaded Files?
Grok works with images you share (it does not take PDF uploads the way some models do). Anything you upload is handled under the same account and retention rules as the conversation. Images can carry more than you intend — location data and timestamps especially — so strip metadata from anything sensitive before sharing, and avoid uploading documents or photos you would not want stored under your account.
Is Grok Private Enough for Sensitive Work?
For casual questions, consumer Grok is fine — more so if you opt out of training, use Private Chat for one-off sessions, and never paste anything you would not want stored. But between training-on-by-default, the X data stream, and the 2025 share-link exposure, it is not the place for confidential material. The API and enterprise terms are far stricter, which is where serious or regulated work belongs. The right workflow for a joke prompt and for a client document are simply not the same.
How Secret Chat AI Uses Grok Differently
The most direct way to stop worrying about what xAI stores is to stop being identifiable to it in the first place. That is what Secret Chat AI is built for: it is an anonymizer and depersonalizer. Its whole design is no profile, no association, no training — it makes you unlinkable to the model providers, so you get the power of Grok as a stranger.
In practice, using Grok through Secret Chat AI means:
- No profile of you. Registration takes an email — used only for account access and payment, never to store or associate your prompts with you — with no name, phone number, X account, or behavioral portrait built up across your chats.
- No chat associated with you. It reaches Grok through xAI's business API on your behalf, so xAI sees the gateway, not you — no identity, no account, and no IP address attached to any prompt.
- Never used for training. On the API, xAI does not train on your content, so the consumer training-by-default and the X-posts data stream simply do not apply.
- History only in your browser, deletion documented. Your conversations live in local storage on your device, not an account archive on xAI's servers, and Secret Chat sends an explicit deletion request to xAI for each session, recording the outcome in a Session Privacy Report (PDF).
This reframes retention entirely: even where xAI's API keeps data for its 30-day audit window, what is kept is not linked to you. The one honest boundary is that Secret Chat AI is an anonymizer, not a content filter. xAI's servers still have to read your prompt to answer it, and Secret Chat does not encrypt or strip the words you send — it removes who you are from the request, not what the request says. So if a prompt contains names or identifiers you would not want any model to see, take them out before sending. And you can switch between Grok and other private AI models in one place.
Practical Tips: Using Grok More Privately
- Turn off "Improve the model" in Grok's Data Controls — and, if you use Grok on X, turn off X's data-sharing setting too.
- Use Private Chat for one-off or sensitive sessions.
- Be extremely careful with the share feature — assume a shared link could become public, and never share a chat containing anything sensitive.
- For work with real stakes, use the API or enterprise (ZDR) rather than the consumer app.
- Strip metadata from images before uploading, and keep passwords, IDs, and confidential details out of prompts.
- Use a private AI interface when you want local browser storage and an anonymized connection instead of an account-tied history.
Table: Grok Data at a Glance
| How you use Grok | Used to train models? | Typical retention |
|---|---|---|
| Consumer app / grok.com (default) | Yes | Stored while your account is active |
| Consumer, training opted out | No (future chats) | Still stored on xAI servers |
| Private Chat mode | No | Deleted within 30 days |
| xAI API | No (not without permission) | 30 days for abuse monitoring, then deleted |
| Enterprise with ZDR (how Secret Chat AI accesses Grok) | No | Not stored after the response |
Frequently Asked Questions
- Does Grok train on my conversations?
On consumer Grok, yes by default. You can opt out under Settings → Data Controls (app) or Settings → Data (grok.com) by turning off "Improve the model," but it only affects future chats. On the xAI API, xAI does not train on your inputs or outputs without permission.
- How long does xAI keep my Grok chats?
Regular conversations are stored on xAI's servers as long as your account is active. Private Chat sessions are deleted within 30 days. On the API, requests and responses are kept 30 days for abuse monitoring; with enterprise Zero Data Retention, nothing is stored after the response.
- Were Grok chats really exposed on Google?
Yes. In August 2025, Grok's share feature created public web links that search engines indexed, exposing hundreds of thousands of conversations — some with sensitive content. It is a reminder to be cautious about what you enter and about what a share button actually does.
- Does using Grok on X train it on my posts?
By default, your public X posts and Grok interactions on X can be used to train Grok. X provides its own opt-out in privacy settings, separate from the Grok app's training toggle.
- Does Secret Chat AI let xAI save my Grok chats under my name?
No. Secret Chat AI reaches Grok anonymously through xAI's API — no profile, account, or IP attached, and your email (used only for account access and payment) is never associated with your prompts. Your history stays in your browser and a deletion request is sent per session. xAI still processes each prompt to answer it, so remove any identifiers you would not want it to see.
Conclusion
So, does Grok save your chats? On the consumer app, yes — it stores them while your account exists and, by default, trains on them, with an extra data stream from X and a 2025 incident that put shared chats on Google. Opting out of training and using Private Chat help, but the real protections come from the API and enterprise ZDR, where xAI does not train on your content and, at the strongest tier, stores nothing at all.
If you want Grok's strengths without being profiled — an anonymous, API-based connection that is not used for training, with no profile of you, local browser-based history, and a choice of models — Secret Chat AI is built for exactly that, without pretending to remove xAI's processing of your prompt.