# Limits & quotas
URL: /stt/rt/limits-and-quotas

Learn about real-time API limits and quotas.

## WebSocket API limits

Soniox applies limits to real-time WebSocket sessions to ensure stability and fair use.
Make sure your application respects these constraints and implements graceful recovery when a limit is reached.

| Limit                  | Value                               | Notes                                                                                                                                                                                                                                                                                                                                        |
| ---------------------- | ----------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Requests per minute    | **100**                             | Exceeding this may result in rate limiting                                                                                                                                                                                                                                                                                                   |
| Concurrent requests    | **10**                              | Maximum number of simultaneous active streams                                                                                                                                                                                                                                                                                                |
| Concurrent connections | **Multiple of concurrent requests** | Maximum number of open WebSocket connections, including idle ones. Derived from the concurrent requests limit; not set separately. Exceeding it returns [`max_concurrent_connections_reached`](/api-reference/errors#max-concurrent-connections-reached). See [WebSocket authentication](/guides/websocket-authentication#connection-limit). |
| Stream duration        | **300 minutes**                     | Each real-time session is capped at 300 minutes. To continue beyond this, open a new session.<br />**This limit is fixed and cannot be increased**                                                                                                                                                                                           |

You can request higher limits (except for stream duration) in the [Soniox
Console](https://console.soniox.com/). The concurrent connections limit follows
the concurrent requests limit.

<Callout type="info">
  Learn how to [track usage](/guides/usage-logs) and [monitor concurrency](/guides/concurrency-limits).
</Callout>