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

# Understand the SLA

> What the Provisioned Throughput SLA covers, which requests are eligible, and how traffic above your capacity is handled.

The SLA applies to eligible traffic sent within your purchased Provisioned Throughput Unit (PTU) capacity and the product limits. It covers three areas.

## What the SLA covers

|                 |                                                                                                                                                                                                       |
| --------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Throughput**  | For your chosen model or model family, eligible traffic is served up to the maximum throughput (in tokens per minute, TPM) that your purchased PTUs guarantee.                                        |
| **Reliability** | A minimum share of eligible requests completes successfully each month. Failures caused by errors on VESSL Cloud's side count against the target; failures caused by client-side errors are excluded. |
| **Latency**     | A target for time per output token (TPOT).                                                                                                                                                            |

<Info>
  The specific targets and the remedies for missing them are agreed in a Custom SLA Addendum when you contract.
</Info>

## Eligible requests

An eligible request is any request made within your purchased PTU capacity and the product limits. The following are excluded from the SLA:

* Errors on your side, malformed requests, and authentication failures
* Requests cancelled by the client
* Traffic above your purchased capacity
* Requests that violate abuse or product-protection limits

## Traffic above your capacity

Traffic above your contracted capacity is served on a best-effort basis up to a set limit above that capacity, and traffic in that band isn't covered by the SLA. To raise your capacity, [talk to sales](https://vessl.ai/en/talk-to-sales?utm_source=docs\&utm_medium=referral\&utm_campaign=inference_en\&utm_content=sla_more_capacity).

## Monitor usage and performance

Usage and performance for each model are on its model page and on the **Monitoring Dashboard**. See [Monitor inference status](/inference/monitor-usage).