Anthropic Implements Mandatory Phone Verification for Claude Account Creation
Key Takeaways
- ▸Phone number verification is now mandatory for all new Claude accounts with no bypass option available
- ▸Only phone numbers from supported locations that can receive SMS messages are accepted; VoIP and alternative services are not permitted
- ▸Anthropic states the verification requirement is implemented to combat spam and abuse on its platform
Summary
Anthropic has implemented a mandatory phone number verification requirement for all new Claude users. During account creation, users must provide a phone number from a supported location and verify it by entering a six-digit code sent via text message. The company states this measure is designed to prevent spam and abuse on its platform.
The verification process is mandatory with no option to skip it, and users must have access to a phone capable of receiving SMS messages from a supported geographic location. Anthropic does not accept VoIP numbers, Google Voice, landline numbers, or other alternative phone services for verification purposes. The company's FAQs clarify that phone numbers are used exclusively for account verification and no other purposes.
- Phone numbers cannot be changed once verified and there is no way to unlink them except through customer support intervention


