# How are API calls billed?

API usage is billed by the amount of images **rendered** using [Render API](https://docs.dynamicmockups.com/api-reference/render-api).

`1 rendered image = 1 credit`

Credits are bought through a **monthly** or a **yearly** subscription. Subscriptions also remove watermarks that show on a FREE plan.

Check pricing options by visiting [this link](https://dynamicmockups.com/pricing/).

{% hint style="info" %}
API calls that result in an error will **not** consume a credit.
{% endhint %}

You can track the remaining credits in your [Subscription](https://app.dynamicmockups.com/subscription) page or the sidebar.

<figure><img src="https://1410134351-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXeuL34FauPTZ6yb0wAep%2Fuploads%2FbNbCqULTLccqVA3WmxNH%2Fimage.png?alt=media&#x26;token=5b8f4b40-a504-449c-8b57-0c87c2efa486" alt=""><figcaption></figcaption></figure>

{% hint style="success" %}
You get 50 credits for FREE when you create an account.
{% endhint %}