Anthropic · Claude.ai Terms of Service

Unilateral Right to Modify Terms

Medium severity
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Consumer impact (what this means for users)

Your conversations with Claude are used by default to train Anthropic's AI models, and even if you opt out, clicking thumbs up or down on any response or having a message flagged for safety review means that content can still be used for training. US users are bound by mandatory arbitration and cannot participate in class action lawsuits against Anthropic, significantly limiting legal remedies. You can opt out of conversation training by navigating to your account settings on Claude.ai.

How other platforms handle this

Uniswap Medium

We reserve the right, in our sole discretion, to modify this Agreement from time to time. If we make any material modifications, we will notify you by updating the date at the top of the Agreement and by maintaining a current version of the Agreement at https://uniswap.org/terms-of-service. All modi...

LinkedIn Medium

We may modify this Contract, our Privacy Policy and our Cookie Policy from time to time. If we materially change these terms or if we are legally required to provide notice, we will provide you notice through our Services, or by other means, to provide you the opportunity to review the changes befor...

DocuSign Medium

We may revise these Terms, including changing, deleting, or supplementing with additional terms and conditions from time to time in our sole discretion, including to reflect changes in applicable law. We will post the revised terms on the Site with a "last updated" date. PLEASE REVIEW THIS WEBSITE O...

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Why it matters (compliance & risk perspective)

Continued use of the service after a change constitutes acceptance, meaning you could be bound by materially worse terms—such as expanded data use or new arbitration conditions—simply by not cancelling in time.

View original clause language
We may modify these Terms at any time. If we make material changes to our Terms, we will notify you via email or a notice within the Services at least 30 days before the effective date of the changes. By continuing to use our Services after the new Terms become effective, you agree to be bound by the revised Terms.

Applicable regulations

DSA
European Union

Provision details

Document information
Document
Claude.ai Terms of Service
Entity
Anthropic
Document last updated
March 24, 2026
Tracking information
First tracked
March 6, 2026
Last verified
April 27, 2026
Record ID
CA-P-002120
Document ID
CA-D-00011
Evidence Provenance
Source URL
Wayback Machine
SHA-256
e757437a9d05ea816b5c1cddd3974f9a2ff93619333e14be4d368d9698b1e93f
Verified
✓ Snapshot stored   ✓ Change verified
How to Cite
ConductAtlas Policy Archive
Entity: Anthropic | Document: Claude.ai Terms of Service | Record: CA-P-002120
Captured: 2026-03-06 19:30:31 UTC | SHA-256: e757437a9d05ea81…
URL: https://conductatlas.com/platform/anthropic/claudeai-terms-of-service/unilateral-right-to-modify-terms/
Accessed: April 29, 2026
Classification
Severity
Medium
Categories

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