Yes — a real San Marino mobile number (+378) can receive the ChatGPT (OpenAI) 6-digit code by SMS. Get one in under a minute: a single-use ChatGPT (OpenAI) code from $0.45, or a number you keep from $4.40/month with unlimited incoming SMS and calls. Email sign-up, crypto payment, no ID.
Monthly
$4.40
per month
Yearly
$22.00
per year
Plans: unlimited incoming SMS & calls, 500 SMS + 1,000 minutes out every month. Renew as long as you want.
Digits are masked. The full number is shown once it is assigned to your account.
Step by step
ChatGPT (OpenAI) asks for your number at the phone step during sign-up or when creating API keys on the OpenAI platform. Expect a 6-digit code; it can arrive by SMS.
Get your San Marino number
Sign up at PhoneBorn with an email, top up with crypto and choose San Marino: a monthly plan ($4.40) if you want to keep the account, or a single-use ChatGPT (OpenAI) OTP number ($0.45) for one code.
Open ChatGPT (OpenAI)
Go to the phone step during sign-up or when creating API keys on the OpenAI platform.
Enter the +378 number
Select San Marino (+378) in the country picker and paste the number from your dashboard without a leading 0.
Enter the 6-digit code from your inbox
Enter the 6-digit code from your inbox.
Finish the profile
Finish the profile; the number may be used again for API or security checks.
Day-to-day life in San Marino runs on WhatsApp, Facebook and Instagram, yet ChatGPT (OpenAI) remains the app for an OpenAI account registered in a supported country. A +378 number keeps that account tied to the country without using your personal SIM.
Businesses registered in San Marino: Companies based in the republic use a +378 number to show a genuine Sammarinese presence rather than an Italian one.
OpenAI can ask for the phone again for API access, billing or security reviews.
San Marino is one of the world’s oldest republics, surrounded entirely by Italy yet with its own +378 country code. Daily life is closely tied to the Italian coast around Rimini, so a distinct Sammarinese number is a clear signal of local presence. It suits local firms, the diaspora and anyone wanting a rare European number.
Local context
| App | OTP price | Guide |
|---|---|---|
| Google / Gmail | $0.38 | Google / Gmail guide |
| $0.40 | WhatsApp guide | |
| Telegram | $0.45 | Telegram guide |
| $0.35 | Instagram guide | |
| $0.33 | Facebook guide | |
| TikTok | $0.33 | TikTok guide |
| Discord | $0.30 | Discord guide |
| X (Twitter) | $0.35 | X (Twitter) guide |
| Binance | $0.55 | Binance guide |
| Amazon | $0.35 | Amazon guide |
Included in every plan
Plan allowances apply to numbers you keep (monthly or yearly). Single-use OTP numbers are a separate product: one code, refunded automatically if no code arrives.
If your number has not sent or received a single SMS or call, you can get a full refund within 7 days of purchase — no questions asked.
Open the number in your dashboard and press “Request refund”. Eligible refunds are returned to your wallet instantly. Refund policy
FAQ
Create an account with just an email, top up with crypto and get a real mobile number — SMS and calls included — in under a minute.