> ## Documentation Index
> Fetch the complete documentation index at: https://plain-docs-orca-916-agent-docs-restructure.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Tiers & SLAs

> Tiers group companies and tenants so you can attach different SLA targets to each.

Within Plain you can organize [companies](/product/platform/companies) and [tenants](/product/platform/tenants) into Tiers. Tiers should match your pricing tiers (e.g. "Enterprise", "Pro", "Free", etc.).

<Snippet file="graphql/sdk-note.mdx" />

This allows you to prioritize and filter your threads by tier.

Tiers also add support for defining [SLAs](/product/platform/tiers) so you can enforce a first-response time for different support tiers within your product or pricing.

Tiers are created via the UI in Plain. Tenants and companies are then added and removed via the API when this happens in your product, so Plain stays in sync.