Common ChatGPT (OpenAI) errors
- “This phone number has been used too many times”
- “Unsupported country”
- No code
Each has a fix in the ChatGPT (OpenAI) verification guide.
ChatGPT (OpenAI) verification+377
Monaco phone number for ChatGPT (+377)
Yes — a real Monaco mobile number (+377) can receive the ChatGPT (OpenAI) 6-digit code by SMS. One ChatGPT (OpenAI) code on a +377 number costs $0.35; a +377 number you keep costs from $1.80/month on the 12-month plan.
- 6-digit code by SMS to +377
- 4th cheapest of 47 countries in Europe for ChatGPT
- Real mobile line — not VoIP
- Works with ChatGPT (OpenAI) — 7-day replacement guarantee
Pricing
From$1.80/mo
on the 12-month plan
Choose 1, 3, 6 or 12 months at checkout — every term price is shown there.
See plans & buyChatGPT (OpenAI) code (single-use)$0.35
Every term (1, 3, 6 or 12 months): unlimited incoming SMS & calls, 500 SMS + 1,000 minutes out every month. Renew as long as you want. Buy with crypto — no wallet top-up needed.
Example numbers
- +377 XX 2780 3XXin stock
- +377 XX 0246 7XXin stock
- +377 XX 2909 1XXin stock
Digits are masked. The full number is shown once it is assigned to your account.
Key facts
ChatGPT (OpenAI) with Monaco numbers: at a glance
- ChatGPT (OpenAI) code (single-use)
- $0.35 per code
- Price rank
- Cheaper than 155 of 191 countries for ChatGPT (OpenAI)
- Rank in Europe
- 4th cheapest of 47 countries in Europe
- Code format
- 6-digit code
- Delivered by
- SMS
- Number format
- +377 · 6 xx xx xx xx → +377 6 xx xx xx xx (no trunk 0)
- Mobile numbers
- +377 · 9 digits · starts with 6
- Stock
- 33 numbers in stock
- Among Monaco apps
- 95th cheapest of 113 apps
- Local time
- UTC+1 (UTC+2 in summer)
Cheapest countries for ChatGPT (OpenAI) right now: Lesotho $0.20 · Malaysia $0.20 · Mauritania $0.20.
Prices as of October 15, 2026; stock changes through the day. Full list: OTP prices by app and country.
Compare nearby countries for ChatGPT (OpenAI)
At $0.35, Monaco is the 4th cheapest of 47 countries in Europe for ChatGPT (OpenAI). Ukraine (+380) is the cheapest nearby at $0.25.
| Country | Dial code | ChatGPT (OpenAI) code | vs Monaco | Stock |
|---|---|---|---|---|
| United Kingdom | +44 | $1.51 | +$1.16 | In stock |
| Germany | +49 | $1.76 | +$1.41 | In stock |
| Netherlands | +31 | $1.56 | +$1.21 | In stock |
| France | +33 | $1.46 | +$1.11 | In stock |
| Spain | +34 | $1.01 | +$0.66 | In stock |
| Poland | +48 | $0.76 | +$0.41 | In stock |
| Sweden | +46 | $1.39 | +$1.04 | In stock |
| Albania | +355 | $0.86 | +$0.51 | In stock |
Step by step
How to verify ChatGPT (OpenAI) with a Monaco number
One ChatGPT (OpenAI) code on a +377 number costs $0.35 — the 4th cheapest of 47 countries in Europe. Full ChatGPT (OpenAI) walkthrough and troubleshooting: ChatGPT (OpenAI) verification guide.
Get your Monaco number
Sign up with an email, top up with USDT or USDC and pick Monaco: a plan to keep the +377 number, or a single-use ChatGPT (OpenAI) OTP number ($0.35).
Open ChatGPT (OpenAI)
Go to the phone step during sign-up or when creating API keys on the OpenAI platform.
Enter the +377 number
Select Monaco (+377) in ChatGPT (OpenAI)'s country picker, then paste the digits your dashboard shows after +377 into ChatGPT (OpenAI).
Enter the ChatGPT (OpenAI) code
ChatGPT (OpenAI) sends a 6-digit code by SMS. SMS codes appear in your PhoneBorn dashboard next to the +377 number; type the code into ChatGPT (OpenAI) to finish.
Tips for Monaco numbers
- After +377, Monaco mobile numbers begin with 6 — a quick check that you pasted the whole number.
- Only need one code and the country doesn't matter? Ukraine costs $0.25 for ChatGPT (OpenAI), against $0.35 here.
- Keep your email and number consistent between ChatGPT and the API platform.
Why use a Monaco number for ChatGPT (OpenAI)?
Day-to-day life in Monaco runs on WhatsApp, Instagram and Facebook, yet ChatGPT (OpenAI) remains the app for an OpenAI account registered in a supported country. A +377 number keeps that account tied to the country without using your personal SIM.
Luxury and wealth services: Private banks, family offices and concierge firms in Monte Carlo serve clients who prefer to message a local +377 contact.
OpenAI can ask for the phone again for API access, billing or security reviews.
Local context
Monaco at a glance for ChatGPT users
- Capital
- Monaco
- Population
- 38,000
- Languages
- French, Monégasque, Italian, English
- Currency
- Euro (EUR)
Apps people use most in Monaco
- Uber
- TikTok
| App | OTP price | vs ChatGPT | Guide |
|---|---|---|---|
| Google / Gmail | $0.29 | −$0.06 | Google / Gmail guide |
| $0.31 | −$0.04 | WhatsApp guide | |
| Telegram | $0.35 | same | Telegram guide |
| $0.27 | −$0.08 | Instagram guide | |
| $0.25 | −$0.10 | Facebook guide | |
| TikTok | $0.25 | −$0.10 | TikTok guide |
| Discord | $0.24 | −$0.11 | Discord guide |
| X (Twitter) | $0.27 | −$0.08 | X (Twitter) guide |
| Binance | $0.43 | +$0.08 | Binance guide |
| Amazon | $0.27 | −$0.08 | Amazon guide |
| Apple ID | $0.31 | −$0.04 | Apple ID guide |
| Signal | $0.25 | −$0.10 | Signal guide |
Works with ChatGPT (OpenAI) — backed by our 7-day replacement guarantee
If your Monaco number doesn't work for ChatGPT (OpenAI) or any other app you need within 7 days of purchase, replace it with a new Monaco number for free — instantly from your dashboard, up to 3 times, no questions asked.
Never used it (no SMS or call)? Take a full refund to your PhoneBorn balance within 7 days instead.
FAQ
Monaco number for ChatGPT (OpenAI): FAQ
How much is a ChatGPT (OpenAI) code with a Monaco number?
A single-use ChatGPT (OpenAI) code on a Monaco (+377) number costs $0.35 (as of October 15, 2026). That makes a Monaco number the 4th cheapest of 47 countries in Europe for ChatGPT (OpenAI), and cheaper than 155 of the 191 countries where ChatGPT (OpenAI) codes are sold. The cheapest option nearby is Ukraine (+380) at $0.25. Among the 113 apps we sell Monaco codes for, ChatGPT (OpenAI) is the 95th cheapest.
Can I use a Monaco number for ChatGPT (OpenAI)?
Yes. ChatGPT (OpenAI) expects a real mobile number, and every Monaco (+377) number we sell is one. If ChatGPT (OpenAI) turns yours down, the 7-day replacement guarantee swaps it for another Monaco number; a single ChatGPT (OpenAI) code that never arrives is refunded to your PhoneBorn balance.
OTP number or phone-number plan for ChatGPT (OpenAI) in Monaco?
One ChatGPT (OpenAI) code on a Monaco number costs $0.35 and covers a single ChatGPT (OpenAI) check; a plan (from $1.80/month on the 12-month plan) keeps the +377 number and receives ChatGPT (OpenAI) codes as often as ChatGPT (OpenAI) asks. ChatGPT (OpenAI) sends its 6-digit code by SMS: a plan receives SMS and incoming calls, an OTP number the SMS code only.
General ChatGPT (OpenAI) questions — code formats, errors, re-verification — are answered in the ChatGPT (OpenAI) verification guide.
Verify ChatGPT with a +377 number today.
33 Monaco numbers in stock · ChatGPT code $0.35. Pay with USDT or USDC, email sign-up, no ID.