The questions customers ask most before buying: prices, how you receive your key, which apps work, what happens when you run out of tokens, and whether failed calls are charged. Still unsure? Message us on Telegram @chotaikhoandotcom.
It is how software and programming tools "talk" to Claude using a dedicated key, charged by the amount of text processed (tokens) instead of a monthly subscription. See the full explanation in the setup guides on this site.
One key works across 26 models from 6 providers: Claude (Anthropic), GPT and Codex (OpenAI), Gemini (Google), DeepSeek, GLM (Z.AI) and Grok (xAI). To switch models, just change the model name in your app — no new key needed.
Packages on sale:
Pick a package on the gateway home page and pay — the system issues a redeem code automatically as soon as the payment is confirmed. Paste the code into the redeem box right on the page and you receive a key starting with sk-ctk-, ready to use immediately.
Three ways: USDT (automatic), VietQR bank transfer (automatically confirmed via SePay) and MoMo (reviewed manually by the shop). No international card and no USD top-up needed.
Any app that calls the Anthropic or OpenAI API standard: Claude Code, Codex, Cursor / Cline, VS Code (Roo Code, Continue), and your own integrations via the address https://api.chotaikhoan.com/v1.
Open the Check key page on the gateway, enter your key and you will see the remaining tokens and the expiry date. When a key runs out of tokens, the app receives a message pointing to that page.
Buy a new package and redeem the code into your old key — the quota stacks, validity follows the new package, and there is no need to configure your apps again.
No. The gateway only charges quota for successful calls, at exactly the real usage of each call and by a public formula. Errors on our side are never charged.
A key expires after the number of days of its package, counted from the moment you redeem the code. An unused redeem code is kept for 30 days from its issue date.
Within the first 7 days: a new key or a 100% refund (keys that have used more than 20% of their quota are not refundable). Need support? Message us on Telegram @chotaikhoandotcom.
The Starter package at $0.72 (≈ 19.000đ) is enough to verify everything yourself, from payment to receiving your key to testing your app. Happy with it? Top up — the quota stacks, nothing is lost.
View packages — from $0.72🔑 Redeem a code for a key