Coinepay | How to Pay for DeepSeek API with a Coinepay Virtual Card

Q: Can I refund unused DeepSeek API balance?

Ask DeepSeek platform customer service or email api-service@deepseek.com. If approved, its policy provides for a lump-sum refund of all remaining unspent funds, less necessary costs such as handling fees.

DeepSeek API uses a prepaid, usage-based balance rather than a monthly API subscription. To pay by card, you add funds through DeepSeek’s Top Up flow, then API usage draws from your account balance. This guide explains how to prepare a Coinepay virtual card, make a top-up and investigate a failed payment. Card options and acceptance can vary by account and region, so check the choices shown at checkout before committing funds.

What you need before you start

A DeepSeek account: The API platform and DeepSeek chat use the same account. You will also need an API key created under that account to make API calls after funding it.
A Coinepay virtual card: Register with Coinepay and complete identity verification before using card services. Your card number, expiry date and CVV are available after issuance in the Coinepay app or self-service dashboard.
Enough available funds: Check your card’s available balance in Coinepay before choosing a top-up amount. Leave room for any currency conversion or other applicable charges displayed to you; check the app or contact Coinepay support for details relevant to your card.
Your real billing details: Have the name and billing address associated with your payment details ready. Enter them accurately if DeepSeek’s checkout requests them.

DeepSeek’s published pricing lists deepseek-flash (DeepSeek-V4.1-Flash-1017) and deepseek-v4-pro (DeepSeek-V4-Pro-0813). These are API model names, not subscription tiers. Input and output tokens have different usage rates, and the rate card distinguishes peak from off-peak periods. Review DeepSeek’s official API pricing page before selecting a top-up amount; a top-up purchases balance, not a fixed quantity of calls or a monthly plan.

How to top up DeepSeek API with your Coinepay card

Get your card ready. Sign in to the Coinepay dashboard or mobile app and check your available balance. Open the virtual card details when you are ready to enter them; keep the card number, expiry date and CVV private.
Sign in to DeepSeek’s API platform. Use your existing DeepSeek account or create one through DeepSeek’s platform. Check that you are in the account where you intend to create and use your API key.
Open Top Up. On the signed-in platform, find Top Up and choose the amount you want to add. Read the amount and currency presented there before proceeding. The available payment choices may differ for your account.
Choose a card option if one is offered. If the checkout presents a bank-card payment method, enter your Coinepay virtual card number, expiry date and CVV. Supply your genuine billing name and address wherever requested. Do not assume a card option displayed to someone in another region will appear in yours.
Review and confirm. Check the top-up amount, payment details and any notices on the checkout screen, then submit the payment. If a security verification screen appears, complete it through the legitimate prompts. Do not repeatedly resubmit while a payment is pending.
Verify the result. Return to your DeepSeek account and check whether your balance has increased or whether a top-up record appears. Check your Coinepay transaction activity as well. If the card shows a charge but the DeepSeek balance has not changed, collect the transaction reference and contact DeepSeek’s platform customer service before attempting another top-up.

A payment attempt is not proof that DeepSeek has credited your account. Conversely, an API key does not itself add funds. Confirm the balance on the API platform before relying on it for production calls. If DeepSeek asks you to complete additional account or payment checks, follow its instructions using your real information.

Understand your balance and ongoing API costs

DeepSeek deducts from a granted balance before a topped-up balance when both are present. Once you begin making API calls, usage reduces the available balance according to the applicable model and token rates. The published rate schedule distinguishes peak hours—Monday through Friday, 01:00–04:00 and 06:00–10:00 UTC, excluding Chinese public holidays—from off-peak hours. Weekends and those holidays are off-peak under the published schedule. Check DeepSeek’s current pricing page for rates and any changes before budgeting.

If an API request returns 402 - Insufficient Balance, that is an API-account balance error, not necessarily a declined card payment. Check the balance in DeepSeek and use Top Up if you want to continue making paid calls. Search and Fetch are separately priced API functions, so review their current terms too if your application uses them.

Why might a DeepSeek card top-up be declined?

A decline can come from the payment flow, a security check or a merchant eligibility rule. A message such as “Your card was declined. Please try a different card” has appeared in a user report about a PayPal-funded top-up; it is not a universal DeepSeek error code and does not identify the cause by itself. Use the checkout message, your Coinepay transaction activity and any response from DeepSeek support to narrow down the issue.

Insufficient available balance

Compare the proposed top-up with the funds actually available on your card. Remember that the displayed checkout currency may differ from the funds you hold, and another pending transaction could affect what is available. If the balance is too low, add funds through your normal Coinepay process or select an appropriate smaller top-up amount if DeepSeek offers one. Check the app or ask Coinepay support about applicable charges rather than assuming the amount entered at DeepSeek is the full amount your card needs.

Billing details do not match

Recheck your name, billing address, postal code and card expiry exactly as applicable to your real payment details. Correct typos rather than substituting an address from another country. If you are unsure which billing details to use, contact Coinepay support before retrying. An accurate address is important even when the checkout does not explain why it rejected an attempt.

3-D Secure or another security check did not finish

If checkout opens an authentication prompt, finish it within the time allowed and return to the payment page. A closed window, expired challenge or interrupted connection can prevent the transaction from completing. If you received no prompt, or the check repeatedly fails, note the time and any error shown and ask Coinepay support whether it can see an authentication or security-related failure. Do not share your CVV, passwords or one-time codes with support staff.

Merchant region or card eligibility checks

DeepSeek says its services and features may differ by jurisdiction. It does not provide a country-by-country card acceptance list in the reviewed API terms, so the presence of a card field does not guarantee a particular card will pass checkout. Check any eligibility notice shown in your account and ask DeepSeek’s platform customer service whether your account and intended payment method are eligible. You can also contact Coinepay support to check details relevant to your card before trying again. Use your actual location and billing information; do not try to bypass regional or payment checks.

If several attempts fail, stop and gather the exact message, top-up amount and currency, approximate time, and whether the failure happened before or during authentication. Share transaction references with the appropriate support team, but never send a full card number or CVV in a support message.

Stopping use and requesting a refund

There is no published recurring DeepSeek API subscription tier to cancel. Stopping API calls stops new usage from those calls, but it does not request a refund of your unused top-up. To ask about a refund, contact DeepSeek’s platform customer service or email [email protected] with supporting materials. Under its published policy, an approved refund covers all remaining unspent funds in one lump sum, less necessary costs such as handling fees. It does not cover funds already spent or provide a partial refund of the remaining balance.

Coinepay manages your card; DeepSeek manages its API account balance and refund decision. If you need help identifying a card transaction, use Coinepay support. If the question concerns a missing top-up, API usage or a refund of DeepSeek balance, contact DeepSeek with the relevant account and transaction information.

Get your Coinepay virtual card: Sign up · App Store · Google Play · Customer support

FAQ

Does DeepSeek API have a monthly subscription?

No monthly API subscription tier is listed on DeepSeek’s published rate card. You top up an account balance and pay for API usage.

Can I use a Coinepay virtual card for a DeepSeek top-up?

If your DeepSeek checkout offers card payment, you can try entering your Coinepay card details. Acceptance depends on the checkout and applicable eligibility checks; confirm the result in your DeepSeek balance.

What does 402 - Insufficient Balance mean?

It means your DeepSeek API account lacks sufficient balance for the request. It is an API error, not a card-decline code.

Can I refund unused DeepSeek API balance?

Ask DeepSeek platform customer service or email [email protected]. If approved, its policy provides for a lump-sum refund of all remaining unspent funds, less necessary costs such as handling fees.

How to Pay for DeepSeek API with a Coinepay Virtual Card