How to Stop AI From Training on Your Data (Every Major Platform)

You can stop ChatGPT, Claude, Gemini, and Grok from training on your conversations, but the setting lives in a different place on each, and the side effects differ. On most platforms the opt-out is a single toggle; on one it is bundled with your history. This guide gives you the exact steps for every major platform in one place, plus the two rules that apply to all of them.

The two rules that apply everywhere

Before the per-platform steps, understand what an opt-out can and cannot do:

1. Opt-outs are forward-looking. Data already used in a completed training run cannot be removed. The sooner you opt out, the less of your history is ever eligible.
2. Training is not the same as storage. Opting out stops the platform learning from your chats; it usually does not delete your history. On some platforms the two are linked, on others they are separate.

The opt-out for every major platform

ChatGPT

Open Settings, go to Data Controls, and turn off Improve the model for everyone. The setting is account-wide and forward-looking. Importantly, training and history are separate on ChatGPT, so you can keep your conversation history saved while opting out of training. For sensitive one-offs, use Temporary Chat, which is not used for training. Full detail: does ChatGPT train on your conversations?.

Claude

In your Claude account settings, find the data and privacy controls and turn off the option that allows your data to improve Claude. Two things to know: the change applies to new or resumed chats, and opting out keeps your data retention at 30 days rather than the longer window that applies if you allow training. Full detail: does Claude train on your conversations?.

Gemini

Go to myaccount.google.com, open Data and Privacy, find Gemini Apps Activity, and turn it off. On Gemini, history and training are bundled into this one activity setting, so turning it off also stops conversations being saved to your activity and stops them being sent for human review. Even off, chats may be kept briefly for service delivery. Full detail: does Gemini train on your conversations?.

Grok

In X, open Settings and privacy, then Privacy and safety, then Grok and third-party collaborators, and turn off the option allowing your public data and interactions to be used for training. Note this covers both your Grok conversations and, for non-EU users, your public X posts. EU users can additionally object under Article 21 of the GDPR.

Business tiers and APIs

If avoiding training entirely is a firm requirement, the strongest move is not a toggle but a tier change. Business products (ChatGPT Team and Enterprise, Claude for Work, Gemini in Google Workspace) and the APIs are generally not used for training by default. For teams handling sensitive data regularly, that default difference is a firmer guarantee than a per-account setting that can be reset.

Keep a private record that no platform can train on

Opting out controls what platforms learn from you. It does not give you a private, searchable archive of your own work, and native history only searches conversation titles, not content.

LLMnesia is a free, local-first Chrome extension that searches your AI chat history across ChatGPT, Claude, Gemini and 10+ platforms. It indexes your conversations on your own device as you browse them, so your searchable record lives on your machine and is never uploaded to LLMnesia's servers. You can opt out of training everywhere and still keep a full-text archive you control. See local-first AI tools and privacy.

Quick checklist

1. Opt out on each platform you use, using the steps above.
2. Remember opt-outs are forward-looking, so do it sooner rather than later.
3. For sensitive work, prefer a business tier or keep the data out of consumer chats.
4. Keep a local-first record so your archive is private and searchable by content.