# Rate Limits

> Understand the rate limits and concurrency limits for the WayinVideo API.

## Rate Limits

To ensure system stability and fair usage for all developers, WayinVideo enforces rate limits and concurrency limits on API requests.

## Request Rate Limit

| Limit Type | Value |
|-----------|-------|
| Requests per minute | 15 |

If you exceed the rate limit, the API returns HTTP status code `429 Too Many Requests`.

## Concurrency Limit

| Limit Type | Value |
|-----------|-------|
| Maximum concurrent projects | 5 |

You can have up to **5** projects running simultaneously. Submitting a new task when you already have 5 active projects will result in a `429` status code response. Wait for existing projects to complete before submitting new ones.

## 429 Response Example

```json
{
  "timestamp": "2026-03-10T15:52:01.610+00:00",
  "status": 429,
  "error": "Too Many Requests",
  "path": "/api/v2/clips/results/prjxxx"
}
```

> If you need higher limits for your use case, please contact us at [wayinvideo@wayin.ai](mailto:wayinvideo@wayin.ai) to discuss custom rate limits.