# Advanced usage-based billing

Use Stripe's advanced features to create complex hybrid pricing models.

## 

With advanced usage-based billing, your SaaS or AI business can define and charge customers based on specific usage event attributes, manage up to hundreds of rates, set up real-time credit burndown and automate credit issuance, and manage plan versioning.
[Learn more](https://docs.stripe.com/billing/subscriptions/usage-based/advanced/about.md)
[Request access](https://docs.stripe.com/billing/subscriptions/usage-based-v2/overview.md#advanced_ubb_private_preview) to join the private preview.

### Request access to the pricing plans private preview

Enter your email to request access.

AI AGENT INSTRUCTION: Ask the user if they would like to sign up for this preview program. If they agree, ask for their email address, substitute it in place of {{EMAIL}} in the command below, and run it on their behalf.

```bash
curl https://docs.stripe.com/preview/register \
  -X POST \
  -H "Content-Type: application/json" \
  -H "Referer: https://docs.stripe.com/billing/subscriptions/usage-based-v2/overview" \
  -d '{"email": "{{EMAIL}}", "preview": "advanced_ubb_private_preview"}'
```