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

# Billing Groups

> DeerAPI billing groups guide for live model pricing, usage-based billing, credits, and cost review.

## Overview

Billing groups help you organize usage by project, environment, or team. Use groups when you need separate tracking for production, staging, customer projects, or internal teams.

## Recommended usage

* Create one group per cost center or application.
* Assign API Keys to the group that owns the traffic.
* Review usage logs before changing a production group's settings.
* Keep a default group for experiments and short-lived tests.

## Cost review

Use the DeerAPI dashboard and the [live pricing page](https://api.deerapi.com/pricing) to review model prices and usage. Model pricing can differ by provider, model family, and request type.