> ## Documentation Index
> Fetch the complete documentation index at: https://to11.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Evaluate

> Measure and compare the quality of your LLM application. Coming soon.

<Note>
  Evaluation is not yet available. This page describes where the section is headed; until it ships, the surfaces below cover the same ground today.
</Note>

Your traces already carry latency and cost. Quality is the harder signal — the part of an LLM application that never shows up in a status code. Evaluate is the section that will close that gap: a place to score outputs, compare versions against each other, and watch quality move over time, right next to the latency and cost you already see in [Observe](/docs/observe/overview).

## What to use today

Until Evaluate ships, two surfaces that are already live cover most of the ground:

* **[Observe](/docs/observe/overview)** — every LLM call lands as a trace carrying its prompt, completion, latency, and cost. Reading those traces back is how you judge output quality by hand today.
* **[Experiment routing](/docs/deploy/routing/experiment)** — split traffic across models, providers, or parameter variants for the same task, with each request tagged by the variant that served it. Compare the variants' traces in Observe to see which one wins.

## Next steps

<CardGroup cols={2}>
  <Card title="Observe" icon="chart-line" href="/docs/observe/overview">
    Read your application's traces, latency, and cost.
  </Card>

  <Card title="Experiments" icon="flask" href="/docs/deploy/routing/experiment">
    A/B test models and parameters for the same task.
  </Card>
</CardGroup>