> ## Documentation Index
> Fetch the complete documentation index at: https://docs.wandb.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Usage Information and Limits

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


Learn about pricing, limits, and other important usage information before using W\&B Inference.

## Pricing

For detailed model pricing information, visit [W\&B Inference pricing](https://wandb.ai/site/pricing/inference).

## Purchase more credits

W\&B Inference credits come with Free, Pro, and Academic plans for a limited time. Enterprise availability may vary. When credits run out:

* **Free accounts** must activate a pay-as-you-go inference (under the **Billing** tab), or upgrade to a paid plan to continue using W\&B Inference. [Activate pay-as-you-go or upgrade](https://wandb.ai/subscriptions)
* **Pro plan users** are billed for overages monthly, based on [model-specific pricing](https://wandb.ai/site/pricing/inference)
* **Enterprise accounts** should contact their account executive

## Account tiers and default usage caps

Each account tier has a default spending cap to help manage costs and prevent unexpected charges. W\&B requires prepayment for paid Inference access.

If you need to change your cap, contact your account executive or support to adjust your limit.

| Account Tier | Default Cap    | How to Change Limit                                         |
| ------------ | -------------- | ----------------------------------------------------------- |
| Free         | \$100/month    | Upgrade to Pro or Enterprise                                |
| Pro          | \$6,000/month  | Contact your account executive or support for manual review |
| Enterprise   | \$700,000/year | Contact your account executive or support for manual review |

## Concurrency limits

If you exceed the rate limit, the API returns a `429 Concurrency limit reached for requests` response. To fix this error, reduce the number of concurrent requests. For detailed troubleshooting, see [Concurrency limits](#concurrency-limits).

W\&B applies rate limits per W\&B project. For example, if you have 3 projects in a team, each project has its own rate limit quota.

## Geographic restrictions

The Inference service is only available from supported geographic locations. For more information, see the [Terms of Service](https://docs.coreweave.com/docs/policies/terms-of-service/terms-of-use#geographic-restrictions).

## Next steps

* Review the [prerequisites](/inference/prerequisites/) before getting started.
* See [available models](/inference/models) and their specific pricing.