Claude Fable 5 SMS Verification: Safe Sign-Up Guide
Need quick verification codes? Start your verification journey now
June 10, 2026 update: Claude Fable 5 is live
Anthropic released Claude Fable 5 and Claude Mythos 5 on June 9, 2026. The official model page lists claude-fable-5 with a 1M context window, 128k max output, and API pricing of $10 per million input tokens and $50 per million output tokens.
Key facts
- Claude signup still requires a text-capable phone number from a supported location. The Help Center says VoIP, Google Voice, app-created numbers, landlines, and numbers that cannot receive texts are not accepted.
- Phone verification and Claude identity verification are separate layers: certain capabilities, integrity checks, or compliance triggers may require Persona identity verification with a physical government photo ID and live selfie.
- For self-serve users, Fable 5 is the current Claude model to watch. Mythos 5 is limited to Project Glasswing and trusted-access workflows, not ordinary account signup.
Signup guidance
- SMS-Act only provides one-time temporary numbers valid for 15 minutes; it is not intended for long-term number holding, fixed numbers, or account trading.
- Start Registration Now
Key Points
- Compliance first: follow the Anthropic Terms; avoid account trading/sharing.
- Trusted numbers: SMS-Act provides overseas numbers with automatic credit return on failed verifications (per platform policy).
- Security: change password + enable 2FA right after sign-up; keep one-account-per-number.
- Use cases: new sign-up, code re-send, updating the bound phone.
Why not buy a Claude account?
| Item | Buying accounts | DIY with SMS-Act |
|---|---|---|
| Compliance | Violates ToS, high ban risk | Official flow, ownership is yours |
| Privacy | Seller may retain access | Dialog & payment fully controlled |
| Cost | High, no refund guarantee | Pay-per-use, auto credit return to your account on failure |
| Stability | Often dies in days | Long-term, Pro upgrade available |
Why SMS-Act for Claude?
- Strong coverage (US/UK/CA, etc.) tuned for Claude verifications.
- High success rate noted by the platform; failures automatic credit return.
Four Steps
- Sign up & top up SMS-Act (console).
- Search “Claude/Anthropic,” pick a high-success country (US/UK first).
- Get a temporary number; if no code in ~2 minutes, release and grab a new one.
- Go to Claude, enter the number, receive the SMS on SMS-Act, submit the code, then change password + enable 2FA.
Check whether the popup is Google or Claude
If you click “Continue with Google” on Claude, a popup from accounts.google.com / Google Account / Gmail is a Google verification, not a Claude verification. In SMS-Act, choose the Google verification service, not Claude. Choosing the wrong service routes the SMS to the wrong provider and usually means no code arrives. Choose Claude/Anthropic only when the Claude page itself asks for a phone number.
FAQ & Troubleshooting
- Google login asks for a code: check the popup domain and title first.
accounts.google.com/ Google Account means Google verification, so choose Google service; choose Claude only for Claude/Anthropic phone verification. - No code received: switch to US/UK; avoid spamming requests; try a new number.
- Charge but failed: platform automatic credit return per policy.
- One number for multiple accounts? No—one number per Claude account.
- Network: use a stable overseas route/VPN.
Compliance & Safety
- Always respect the Anthropic Terms.
- Enable 2FA, review login history regularly.
- Avoid submitting sensitive prompts or payment info on public networks.
Related Resources
- Claude code not arriving? Deeper checks
- Claude SMS verification (popular guide)
- How to use an SMS platform (beginner)
- Choosing a reliable SMS platform
Start Now
Get an overseas number from SMS-Act and complete Claude verification safely.
Disclaimer
This platform is designed to support development testing, business verification, and international service scenarios, helping users complete processes in a reasonable and compliant manner.
Users are expected to ensure that their use of the service complies with applicable laws, regulations, and the policies of third-party platforms. The platform does not participate in or control how the service is used.
Accounts associated with abnormal or improper usage may be subject to restrictions in accordance with platform policies.
Users must be at least 18 years old and acknowledge that they are fully responsible for their own use and any resulting outcomes. If you do not agree with these terms, please discontinue use of the service.
Further Reading
Claude Design Complete Guide — After Claude signup, explore Anthropic Labs' new AI visual tool released in April 2026.