***

title: Billing Overview
subtitle: Understand how billing works at Synthflow
slug: billing
description: >-
Learn about Synthflow's pricing plans, billing cycles, and how to manage your
subscription.
-------------

Synthflow offers flexible pricing designed to scale with your needs. Explore the platform for free, then add a payment method when you're ready to make calls or use chat.

## Plans

We offer two plans to suit different needs:

| Feature        | Pay As You Go                          | Enterprise    |
| -------------- | -------------------------------------- | ------------- |
| Starting price | \$0/month                              | Custom        |
| Call billing   | LLM + voice engine (\~\$0.15–0.24/min) | Custom        |
| Concurrency    | 5 units (expandable)                   | Unlimited     |
| SLA            | Standard                               | 99.99% uptime |
| Support        | Community + ticketing                  | Dedicated     |

<CardGroup cols={2}>
  <Card title="Pay As You Go" icon="fa-regular fa-credit-card" href="/pay-as-you-go">
    Usage-based: billed per LLM and for the voice engine. Ideal for builders, pilots, and small-scale deployments.
  </Card>

  <Card title="Enterprise" icon="fa-regular fa-building" href="/enterprise">
    Purpose-built for teams handling 10,000+ minutes per month with enterprise-grade reliability and support.
  </Card>
</CardGroup>

For a detailed comparison, visit our [pricing page](https://synthflow.ai/pricing). The pricing page also includes a **cost calculator** to help you estimate costs based on your expected call volume and requirements.

### Legacy plans

We previously offered **Pro** and **Agency** plans. These plans are being phased out and will no longer be available for new subscriptions.

<Note>
  If you're currently on a Pro or Agency plan, your subscription remains fully supported. Your pricing, features, and service level will continue unchanged. There is no action required on your part.
</Note>

For new subscriptions, we recommend [Pay As You Go](/pay-as-you-go) for most use cases, or [Enterprise](/enterprise) for high-volume deployments.

## Getting started

### Add a payment method

When you first sign up, you can explore the platform without a payment method. You can create and configure agents, use the flow designer, add knowledge bases, integrate external applications, and preview voices. However, to make calls or use chat agents, you'll need to add a payment method.

<Steps>
  <Step>
    Go to **Settings > Plan & Billing** in the left sidebar.
  </Step>

  <Step>
    Click **Add payment method** and enter your card details.
  </Step>

  <Step>
    Provide your billing information including your address and, if applicable, your tax ID.
  </Step>
</Steps>

Adding a payment method automatically subscribes you to the **Pay As You Go** plan at \$0.00 per month. You won't be charged until you start making calls or using chat agents.

<Tip>
  If you're based in the European Union, add your VAT number during setup to avoid being charged additional VAT. You can add it later in the [Billing Portal](/manage-billing).
</Tip>

### Track your usage

Your current used minutes are shown in the sidebar. For more detail, use the **Usage dashboard** under **Settings > Plan & Billing** — total events, total cost for a period, and breakdown by date and by provider. See [usage and billing](/usage) for how we measure and charge.

Agency accounts can view usage per subaccount in the [Agency dashboard](/agency-whitelabel-dashboard).

## Manage your subscription

All billing and subscription management happens in **Settings > Plan & Billing**. From there you can:

* View your plan, Usage dashboard, and billing history
* Upgrade to Enterprise or add add-ons
* Access the Billing Portal to update payment methods
* Download invoices and view billing history

Learn more about [managing your billing information](/manage-billing).

## For agencies

If you're running an agency with subaccounts, you can set up your own pricing plans and rebill your clients. Connect your Stripe account to create custom plans with included minutes, usage-based overage, and bundled products.

Learn more about [pricing plans and rebilling](/set-up-pricing-and-rebilling).

## FAQ

<AccordionGroup>
  <Accordion title="Can I use the platform without a payment method?">
    Yes. You can explore the platform, create agents, use the flow designer, add knowledge bases, integrate external applications, and preview voices—all without a payment method. However, making calls and using chat agents requires a payment method.
  </Accordion>

  <Accordion title="What payment methods do you accept?">
    We accept all major credit and debit cards through our payment processor, Stripe.
  </Accordion>

  <Accordion title="Can I switch between plans?">
    Yes. You can upgrade to Enterprise at any time by contacting our [sales team](https://synthflow.ai/talk-to-sales). If you're on Enterprise and want to switch to PAYG, contact your account manager.
  </Accordion>

  <Accordion title="Where can I see my invoices?">
    You can view and download all invoices from the Billing Portal. Go to **Settings > Plan & Billing** and click **Billing Portal**.
  </Accordion>

  <Accordion title="How do I cancel my subscription?">
    You can cancel anytime from the Billing Portal. Your access continues until the end of your current billing period.
  </Accordion>
</AccordionGroup>