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

# Solvers and scorers

Evaris separates generation from evaluation:

* **Solvers** produce model/agent outputs.
* **Scorers** measure output quality.

## Solvers

Solvers define how outputs are produced (single-step generation or multi-step chains).

## Scorers

Scorers compute metrics for each sample and can roll up to run-level aggregates.

## Why this split matters

You can reuse the same dataset and solver with multiple scorers, or compare solver strategies against the same scoring rubric.