A real phone number for ChatGPT and OpenAI verification

Updated 2026-09-30 · By the ZuteSIP team (ZuteSIP Inc.)

Short answer: You can use a ZuteSIP number to receive ChatGPT and OpenAI verification codes by SMS. It is a real mobile, local or toll-free number that works for sign-up with most apps. If OpenAI does not accept it, the 7-day replacement guarantee gives you a free new number, up to 2 times.

OpenAI asks for a phone number in a few places: some new ChatGPT sign-ups, and the verification tied to API key generation on the developer platform. Because OpenAI limits how many accounts one number can verify, it pays to pick a number you will keep.

Where OpenAI asks for a phone number

Most people meet phone verification in one of two places. The first is ChatGPT itself: OpenAI's help center describes phone-only sign-ups, a beta that lets new users in some countries create an account with just a phone number. The second is the OpenAI platform for developers, where phone verification is linked to generating an account's first API key.

In both cases the purpose is the same. The number proves that a real person controls the account and makes abuse of free usage harder. That is also why OpenAI caps how often a single number can be reused, so a shared or recycled number is a poor fit.

What OpenAI's help center says about verification

Because the codes travel by SMS, a mobile number is the most natural choice. Every ZuteSIP number includes unlimited incoming SMS, and each message appears in your dashboard as soon as it arrives.

Topic	What OpenAI documents (as of September 2026)
How codes are sent	For phone-only sign-ups, by SMS or, where available, WhatsApp; not by email or phone call
Reuse for API verification	One number can complete phone verification up to 3 times, across different accounts
Reuse after deleting an account	The number is removed from OpenAI's system 30 days after a consumer account is permanently deleted, unless the account was disabled for a policy violation
Paid plans on phone-only accounts	Upgrading to a paid plan such as ChatGPT Plus requires adding and verifying an email address

Why a dedicated number suits ChatGPT

Since one number can only verify a limited number of accounts, a number that stays yours for years is worth more here than one you replace often.

Your personal SIM stays separate from a work or developer account that colleagues may also manage.
A company can hold the number used for its OpenAI organization instead of relying on one employee's phone.
Freelancers and agencies keep client projects on a number they control and renew.
People living abroad keep a stable number from their home country even when their local SIM changes.

Verifying ChatGPT or the OpenAI platform, step by step

Create a ZuteSIP account with your email address and choose a country and a mobile number.
Pay from your wallet with USDT or USDC; most numbers are active within minutes.
In ChatGPT or on the OpenAI platform, open the phone verification screen and choose the matching country code.
Enter the number in full international format and request the code.
Open the SMS inbox in your ZuteSIP dashboard, copy the code and paste it into OpenAI.
Add a recovery email and, where offered, multi-factor authentication so you are not relying on one sign-in method.

If the code does not arrive or the number is refused

First check that the country code is correct and that you did not request several codes in a row, which can trigger rate limits. Wait a few minutes before asking again, and keep the dashboard open so you see the SMS the moment it lands.

If OpenAI says the number cannot be used, or it has reached its account limit, the 7-day replacement guarantee covers you: one click gives a free new number in the same country, up to 2 times. If the number has not been used for any call or SMS, you can instead get a refund within 7 days.

Staying within OpenAI's rules

Use the number for your own account or your organization's account, and follow OpenAI's terms and usage policies. The per-number limits exist to stop people from multiplying free accounts, and a ZuteSIP number is not a way around them. If an account is disabled for a violation, OpenAI keeps the number blocked, so there is no benefit in trying.

What the ZuteSIP plan includes

Every number costs from $1.80 per month, billed yearly ($21.60 per year), whatever the country or type. It includes unlimited incoming SMS and calls, 500 outgoing SMS and 1,000 outgoing minutes a month, SIP credentials, call forwarding and a browser web dialer. You pay in USDT or USDC, and the number renews automatically from your wallet.

Included on every plan

Unlimited incoming SMS
Unlimited incoming calls
500 outgoing SMS per month
1,000 outgoing minutes per month
SIP credentials, call forwarding and web dialer
Keep your number as long as you want
Works with WhatsApp, Facebook, Google, Telegram and thousands more
7-day replacement guarantee — free new number if it doesn't work for you
7-day money-back guarantee if the number is unused

Numbers from $1.80 per month, billed yearly ($21.60 per year). Pay with USDT or USDC.

Frequently asked questions

Can I use a ZuteSIP number for ChatGPT sign-up?

Yes. The number receives SMS like a SIM and works for sign-up with most apps. If OpenAI does not accept it, you get a free replacement within 7 days, up to 2 times.

Does OpenAI send the code by phone call?

For phone-only sign-ups, OpenAI's help center says codes go by SMS or, where available, WhatsApp, not by call or email. A mobile number with SMS is therefore the right choice.

How many OpenAI accounts can one number verify?

OpenAI documents a limit of 3 phone verifications per number for API key generation. Plan your accounts around that limit rather than trying to work around it.

Can I reuse my number after deleting my ChatGPT account?

According to OpenAI, the number is removed from its system 30 days after a consumer account is permanently deleted, unless the account was disabled for a policy violation.

Which country should I pick?

Pick the country you live in or where your business is based. OpenAI's phone verification is available in many countries, and a number that matches your situation is easier to keep long term.

Can I get my money back if I never use the number?

Yes. If the number has not been used for any call or SMS, the 7-day money-back guarantee applies.

Related guides and use cases

Related countries

Sources

OpenAI Help Center: Phone-only signups (as of September 2026)
OpenAI Help Center: How many times can I use the same phone number to complete phone verification (as of September 2026)