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

# Datasets

> Manage evaluation datasets and items in the app.

The **Datasets** page manages the [datasets](/concepts/datasets) an
[experiment](/app/experiments) can run against.

## Create a dataset

**Datasets → New dataset** with a name and description.

## Add items

Open a dataset and add items:

* **Input** — JSON or plain text.
* **Expected** — the reference output (optional, used by dataset scoring).

Items are versioned with the dataset, so each experiment records exactly which
version it ran against.

## From traces

Capture real production runs from the [Traces](/app/traces) page into a dataset
to build regression suites out of cases that actually happened.