Top-Ups, Refunds, and Invoices
How to top up on 1折AI, minimum amounts, supported payment methods, the 7-day unused balance refund policy, and what invoices are available for each payment method.
This page explains the API account balance: top up first, and charges are deducted based on usage when you make calls. AI account products are purchased according to their product specifications; for after-sales service, see Account Store. The API balance refund rules on this page do not apply to them.
The balance refund rules in this article apply to model API top-ups. For ready-to-use accounts, subscription activation, and gift card orders, please refer to Store Transaction and After-Sales Rules; the 7-day API rule does not directly apply.
Top-Up
Section titled “Top-Up”| Item | Description |
|---|---|
| Amount limits | Subject to the wallet order page |
| Payment methods | WeChat Pay, Alipay, Stripe (bank card), USDT |
| Entry point | Console left sidebar menu “Wallet” → “Add Funds” |
| How charges are deducted | Claude input/output at model discount rates, caching at official list price; other models at their respective rates, see Pricing and Billing |
Top-up principal is credited in USD. Payment processing service fees are listed separately and are non-refundable.
API Balance Refunds
Section titled “API Balance Refunds”Within 7 days of top-up, you may apply to have unused principal refunded to the original payment method. Consumed portions and payment processing service fees are not refundable.
Confirm refundable amount
Check the consumption after this top-up in the call logs; the refundable unused principal in the wallet is the basis. Payment processing service fees are not counted toward the refundable principal.
Submit request
Send an email to [email protected], stating your account, top-up time, and payment method.
For first-time use, you can top up an amount allowed by the wallet, then run through the checks per Verify Models and Usage, and use it on your real tasks for a few days. Within 7 days, you may apply to have unused principal refunded to the original payment method; payment processing service fees are non-refundable.
Invoices
Section titled “Invoices”| Payment Method | What Can Be Issued |
|---|---|
| WeChat Pay / Alipay | Invoice available, additional 6% of the payment amount charged |
| Stripe (bank card) | Stripe invoice (English) |
| USDT | No invoice provided |
For invoicing, corporate procurement, and bank transfers, contact us by email at [email protected].
What is the minimum top-up amount?
Amount limits are subject to the wallet order page. Before paying, verify the top-up principal, payment processing service fee, and credited amount.
What happens if my balance runs out?
When the balance is exhausted, requests return HTTP 403, and the response body contains Insufficient user quota (/v1/messages has error.type as billing_error, and /v1/chat/completions has insufficient_quota). Rejected requests are not charged; you can continue using the service after the top-up is credited.
A one-sentence request — why are there hundreds of input tokens?
Calls made through Claude Code do not include any additional content. Other clients (SDKs, curl, and third-party tools) attach a system prompt to each request, billed as input tokens: approximately 350 tokens for Sonnet 4.6 and approximately 500 tokens for the 5.x series. For explanations and measured data, see Billing for System Prompts.
Can I still get a refund after 7 days?
The API balance refund rule covers unused principal within 7 days of top-up; consumed portions and payment processing service fees are not refundable. For cases beyond 7 days, please contact us separately to explain.