> ## Documentation Index
> Fetch the complete documentation index at: https://wb-21fd5541-serverless-sft-revamp.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Limits

> Understand pricing, usage limits, and account restrictions for W&B Serverless RL

## Limits

* **Inference concurrency limits**: By default, Serverless RL currently supports up to 2000 concurrent requests per user and 6000 per project. If you exceed your rate limit, the Inference API returns a `429 Concurrency limit reached for requests` response. To avoid this error, reduce the number of concurrent requests your training job or production workload makes at once. If you need a higher rate limit, you can request one at [support@wandb.com](mailto:support@wandb.com).

* **Geographic restrictions**: Serverless RL is only available in supported geographic locations. For more information, see the [Terms of Service](https://site.wandb.ai/terms/).