---
title: "Top-Ups, Refunds, and Invoices"
description: "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."
headingIds: {"Top-Up":"section-1","API Balance Refunds":"section-2","Invoices":"section-3","FAQ":"section-4"}
---

<aside className="docs-publication" data-pagefind-ignore>

Documentation maintained by [1ZheAI](https://1zheai.com/en/editorial/#publisher). [Sources and corrections](https://1zheai.com/en/editorial/).

Found an error? [Contact support](mailto:support@1zheai.com) with the page address and a description. Do not send API keys or account credentials.

</aside>
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](https://1zheai.com/en/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](/en/docs/store-rules/); the 7-day API rule does not directly apply.

## Top-Up

| Item | Description |
|---|---|
| Amount limits | Subject to the wallet order page |
| Payment methods | WeChat Pay, Alipay, Stripe (bank card), USDT |
| Entry point | [Console](https://1zheai.com/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](/en/docs/pricing-explained/) |

Top-up principal is credited in USD. Payment processing service fees are listed separately and are non-refundable.

## 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.**

<Steps>
<Step title="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.

</Step>
<Step title="Submit request">

Send an email to support@1zheai.com, stating your account, top-up time, and payment method.

</Step>
</Steps>

<Tip>

For first-time use, you can top up an amount allowed by the wallet, then run through the checks per [Verify Models and Usage](/en/docs/verify-model/), 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.

</Tip>

## 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 support@1zheai.com.

## FAQ

<AccordionGroup>
<Accordion title="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.

</Accordion>
<Accordion title="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.

</Accordion>
<Accordion title="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](/en/docs/pricing-explained/#section-3).

</Accordion>
<Accordion title="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.

</Accordion>
</AccordionGroup>