---
title: "Options | Grafana k6 documentation"
description: "Options configure test-run behavior. You can set options in multiple locations. Examples for how to use options, and a complete reference."
---

# Options

Options configure test-run behavior. For example, options are how you define test tags, thresholds, user agents, and the number of virtual users and iterations.

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| On this page                                                        | Read about…                                                                                                                                 |
|---------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------|
| [How to use options](/docs/k6/latest/using-k6/k6-options/how-to/)   | How to set options in different places (with examples), how to override options, and how to access the value of an option as the test runs. |
| [Options reference](/docs/k6/latest/using-k6/k6-options/reference/) | Every option, with examples, defaults, and descriptions.                                                                                    |