# Rate Limits

Arta imposes rate limits on API requests to maintain system stability and ensure fair usage. If you exceed these limits, the API will return a `429 Too Many Requests` error. Below are the rate limits for both Live and Test modes.

**Live Mode:**

*	Concurrent requests: 15 API calls at the same time (any type)
* Instant quote requests: 20 calls per minute
* Overall requests: 1000 API calls per minute (any type)

**Test Mode:**

* Concurrent requests: 10 API calls at the same time (any type)
* Instant quote requests: 10 calls per minute
* Overall requests: 500 API calls per minute (any type)

When a rate limit is exceeded, we recommend implementing retry logic with exponential backoff to handle 429 errors effectively.