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

# Billing and credits

> How usage is metered and paid for, and the bring-your-own-key option for model costs.

<Note>
  Plans and pricing mechanics change. Confirm current specifics in your billing settings and agreement — this article covers the general model.
</Note>

## Usage-based credits

Adopt meters usage and tracks it against **credits**. Admins can see consumption and manage credit allocation. Token consumption is visible for cost management, which helps you attribute cost to processes and clients.

## Bring your own key (BYOK)

For control over model costs, Adopt supports **bring-your-own-key** — you supply your own model-provider credentials and pay the provider directly, rather than consuming Adopt's included model usage. This pairs with **open-weight / self-hosted models**, a lower-cost or data-sovereignty option for suitable workloads.

## Managing spend

* Watch token consumption by process/agent to spot expensive workflows.
* Consider BYOK or open-weight models for high-volume, cost-sensitive processes.
* Set expectations with builders: tighter file scoping and cleaner instructions generally mean less token use per run.

## Next steps

1. [Usage and reporting](/admin/usage-and-reporting)
2. [Data handling and compliance](/security-access/data-handling-and-compliance)