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

# Pricing

> Usage-based pricing for Higgs Realtime, Higgs TTS 3, and Higgs Avatar.

All Boson APIs are usage-based and **prepaid**: you [add credits](/account-billing/payment-and-credits), and usage draws down your balance. New accounts start with [\$10 in free trial credit](/free-trial-credit).

The canonical rate card, with interactive cost estimators, is at [boson.ai/pricing](https://www.boson.ai/pricing). The rates below mirror it.

## Higgs Realtime

Token-billed; the per-minute figures are estimates reflecting common usage — actual cost is calculated from tokens consumed.

| Billing event            | Rate               |
| ------------------------ | ------------------ |
| Audio input (estimated)  | \$0.0023 / min     |
| Audio output (estimated) | \$0.014 / min      |
| Input tokens             | \$0.75 / 1M tokens |
| Cached input tokens      | \$0.25 / 1M tokens |
| Output tokens            | \$4.50 / 1M tokens |
| Transcription input      | \$0.0025 / min     |

## Higgs TTS 3

| Billing event   | Rate                    |
| --------------- | ----------------------- |
| Text input      | \$0.015 / 1K characters |
| Generated audio | Free                    |

## Higgs Avatar

| Resolution         | Rate         |
| ------------------ | ------------ |
| 640 × 480          | \$0.07 / min |
| 480 × 640          | \$0.07 / min |
| 640 × 640          | \$0.09 / min |
| Audio + text input | Free         |

Usage estimates exclude applicable taxes.

## Next steps

<CardGroup cols={2}>
  <Card title="Set up your account" icon="circle-check" href="/set-up-your-account">
    Create an account, claim your free credit, and make a first call.
  </Card>

  <Card title="Usage & limits" icon="gauge" href="/account-billing/usage-and-limits">
    Track spend and set a monthly cap.
  </Card>
</CardGroup>