ChatGPT Phone Verification: SMS Code with a Virtual Number

When you create a ChatGPT or OpenAI account, you are asked to verify a phone number in addition to your email address. If you would rather not give your personal number for ChatGPT phone verification, a single-use virtual number is one option to consider. This article explains the process, possible problems and how to keep your account safe, in plain language.

Why does OpenAI ask for a phone number?

AI services use phone verification to limit automated and abusive account creation. OpenAI also sends an SMS code to a phone number after email verification during sign-up. The purpose of this step is to confirm that the account was opened by a real person and to protect service quality.

Once your phone number is linked to your account, it becomes a piece of information associated with it. On an account that holds your chat history and API usage, it matters who that information is shared with. For the general picture, see why you should not share your phone number everywhere.

When does a virtual number make sense?

A virtual number is a temporary phone number used to receive an SMS code. No SIM card is needed; the code appears in the panel. For ChatGPT and OpenAI, it makes sense in these scenarios:

• Privacy: You do not want to link your personal number to an AI platform.
• Testing and development: You need a separate account to try out an app or an integration.
• Separating work from personal use: You want an account for work projects that is separate from your personal one.
• Spam protection: You do not want your number to end up in marketing databases.

You will find the basics in "What is a virtual number and how does it work".

Step-by-step verification with CodeSMS

The flow below is a general outline. How fast the code arrives depends on the country and demand.

1. Add balance. Top up your account from the panel.
2. Open the Get SMS screen. Select OpenAI / ChatGPT from the service list.
3. Choose a country. Stock and prices differ by country; see the OpenAI ChatGPT price page for the current situation.
4. Buy the number. You get a single-use number for that verification.
5. Enter the number on the OpenAI sign-up screen. Type it with its country code and request the code.
6. Read the code in the panel. When the SMS arrives, the code shows up in the panel; enter it on the sign-up screen to finish verification.

Tip: do not buy the number until the OpenAI sign-up screen has reached the phone step. A number's waiting time is limited, so buying it when you are ready means you do not waste it.

If the code does not arrive

If the code does not arrive within the time limit, you can cancel the number. When the time runs out or you cancel, the fee is automatically returned to your balance. If the code arrived, the transaction counts as completed.

When a code does not arrive, first make sure you entered the number in the right format and picked the right country. Then wait a few minutes; sending requests back to back can slow things down. For a detailed checklist, read SMS code not arriving: causes and solutions.

An honest warning: some numbers may be rejected

Like many platforms, OpenAI may not accept some virtual or VoIP type numbers. One number may be accepted while another returns an "invalid number" error. This depends on the platform's own policy and can change over time. In that case:

• Cancel the number (the fee is refunded) and try another country for the same service.
• Do not enter the same number again and again.
• Read the service's terms of use and act accordingly.

This guide does not recommend bypassing platform rules or opening accounts in bulk; the goal is to protect your privacy and to test in a legitimate way.

Account security: do not rely on the number

Because a virtual number is single-use, you lose access to it after verification. That is why it is important to secure your account in other ways:

1. Set a strong, unique password and use a password manager.
2. If possible, turn on two-factor authentication with an authenticator app.
3. Use a recovery email and an email address you can access.
4. Link your account through email or a sign-in method you trust, and check the signed-in devices from time to time.
5. Never share your API keys and never commit them to code repositories.

API keys in particular are sensitive because they can cause usage charges on your account. Store them in environment variables or a secrets manager. These habits protect your account even when the verification number is no longer in your hands.

Do not limit privacy to the phone number

Not sharing your phone number is only one part of privacy. Do not type sensitive content such as ID numbers, bank details, passwords or customer data into AI chats. It is also a good habit to review the data and privacy options in your account settings. Since menu names can change over time, look for the relevant options in the account settings and privacy sections.

Real number or virtual number?

| Criterion | Virtual number | Real number |
|---|---|---|
| Privacy | Personal number is not shared | Number is linked to the account |
| Ownership | Single-use | Permanent |
| Acceptance | Platform may restrict | Usually trouble-free |
| Account recovery | Should be backed by email and 2FA | Possible via SMS |
| Suitable use | Testing, privacy, second account | Long-term main account |

For your main account that you will use for years and where you have set up payment details, a real number may be more predictable. For trials, privacy and a separate test account, a virtual number stays practical.

For developers: automation with the API

If you build applications on OpenAI, you may want to handle the verification of your test accounts in code. CodeSMS's API documentation includes SMS-Activate compatible endpoints and supports the Idempotency-Key header, which helps prevent the same request from being processed twice by mistake. Of course, platform terms of use apply when you use the API too.

To see all services and countries, take a look at the prices page.

Frequently asked questions

Does OpenAI accept virtual numbers?

It depends on OpenAI's current policy and the type of number. Some numbers may be accepted and others rejected. If one is rejected, cancelling it and trying another country is usually enough.

Is the fee refunded if the code does not arrive?

Yes. If the code does not arrive, you can cancel the number; when the time runs out or you cancel, the fee is automatically refunded to your balance. If the code arrived, the transaction counts as completed.

Will I need the number after verification?

The number is single-use and there is no permanent ownership. That is why we recommend setting up a strong password, two-factor authentication and a recovery email right after verification.

How much does it cost for ChatGPT?

The price varies by country and stock. For the latest information, see the OpenAI ChatGPT price page.