Before you paste anything sensitive into Claude, you should understand what Anthropic does with your conversations. The answer varies significantly by plan — and most people are on the plan with the least data protection. Here’s the complete picture.
Claude Data Handling by Plan
| Plan | Training data use | Human review possible? | Custom data agreements |
|---|---|---|---|
| Free | Yes (opt-out available) | Yes | — |
| Pro | Yes (opt-out available) | Yes | — |
| Team | No (by default) | Limited | — |
| Enterprise | No | Configurable | ✓ BAA available |
How to Opt Out of Training Data Use
On Free and Pro plans, you can disable conversation use for model training in your account settings. Go to Settings → Privacy → and toggle off “Help improve Claude.” This applies to future conversations — it doesn’t retroactively remove past conversations from training data already collected.
What Anthropic Can See
Anthropic employees may review conversations for safety research, model improvement, and trust and safety purposes. This applies to all plan tiers, though the scope and purpose of review is more restricted on Team and Enterprise. Human reviewers follow internal access controls, but if you’re sharing genuinely sensitive information, the better approach is to use Enterprise with appropriate data handling agreements — not to rely on the assumption that your specific conversation won’t be reviewed.
Data Retention
Anthropic retains conversation data for a period before deletion. The specific retention period isn’t published in a simple number — it varies based on account type and purpose. Your conversation history in the Claude.ai interface can be deleted by you at any time from Settings. Deletion from the UI doesn’t guarantee immediate removal from all backend systems, and may not remove data already used in training.
Claude and GDPR
For users in the EU, Anthropic operates under GDPR obligations. This includes rights to data access, correction, and deletion. Anthropic’s privacy policy covers these rights and how to exercise them. For organizations subject to GDPR with stricter requirements around AI data processing, Enterprise is the appropriate tier — it supports data processing agreements and more granular controls.
What Not to Share With Claude on Standard Plans
On Free or Pro plans, avoid sharing:
- Patient health information (HIPAA-regulated)
- Client confidential data under NDA
- Non-public financial information
- Personally identifiable information beyond what the task requires
- Trade secrets or proprietary business processes
For a full breakdown of Claude’s safety posture beyond just privacy, see Is Claude AI Safe? For current, authoritative terms, always refer to Anthropic’s privacy policy directly.
Frequently Asked Questions
Does Claude store your conversations?
Yes. Anthropic retains conversation data for a period of time. You can delete your conversation history from the Claude.ai interface, but this doesn’t guarantee immediate removal from all backend systems or data already incorporated into training.
Is Claude HIPAA compliant?
Not on standard plans. HIPAA compliance requires a Business Associate Agreement (BAA) with Anthropic, which is only available on the Enterprise plan. Do not share patient health information with Claude on Free, Pro, or Team plans.
Can I stop Anthropic from using my conversations to train Claude?
Yes, on Free and Pro plans you can opt out in Settings → Privacy. Team plans don’t use conversations for training by default. On Enterprise, this is governed by your data processing agreement.
Is Claude private?
Claude conversations are not end-to-end encrypted in the way messaging apps are. Anthropic can access conversation data. “Private” in the sense of not being shared with third parties — yes, Anthropic doesn’t sell your data. Private in the sense of completely inaccessible to the company that runs it — no.
Deploying Claude for your organization?
We configure Claude correctly — right plan tier, right data handling, right system prompts, real team onboarding. Done for you, not described for you.
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