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

# Pricing

> Simple per-minute pricing — no surprises

Nixflex charges a flat **\$0.08 per minute** of voice. No setup fees, no monthly minimums, no per-feature charges.

## Voice

|                                           | Per minute |
| ----------------------------------------- | ---------- |
| **Voice (all calls, inbound + outbound)** | **\$0.08** |

Voice is billed per second, rounded to the nearest second. A 1m23s call costs `83 × ($0.08 / 60) = $0.111`.

## What's included in every minute

* Real-time speech recognition
* AI reasoning
* Natural-sounding voice synthesis
* Call recording (stored on Nixflex, plus original kept on your Twilio)
* Post-call analysis (summary, sentiment, custom extraction)
* Webhook delivery with automatic retries
* Dashboard access and logs

There are no separate per-feature charges. Everything is in the per-minute price.

## What's not included

You pay these directly to your Twilio account (Bring Your Own Twilio):

| Cost                    | Where it's billed   |
| ----------------------- | ------------------- |
| Phone numbers           | Your Twilio account |
| Voice minutes (carrier) | Your Twilio account |
| SMS messages            | Your Twilio account |

Because you BYO Twilio, Nixflex doesn't see or mark up these costs — you get Twilio's wholesale rates directly.

## SMS

Nixflex doesn't charge for SMS. You pay Twilio directly at their standard rates for your region.

## How billing works

<Steps>
  <Step title="Top up credit">
    Add credit to your account from the dashboard. Minimum top-up \$20.
  </Step>

  <Step title="Calls and SMS deduct from credit">
    Each call deducts at the end. SMS deducts when sent.
  </Step>

  <Step title="Low balance alerts">
    Email when credit drops below your threshold (default \$20).
  </Step>

  <Step title="Auto-top-up (optional)">
    Set a payment method to auto-top-up when balance falls below a threshold. Never run out mid-call.
  </Step>
</Steps>

## Usage tracking

Check current usage anytime:

```bash theme={null}
curl https://api.nixflex.com/v1/usage \
  -H "Authorization: Bearer KEY_ID:KEY_SECRET"
```

Returns total minutes, calls, SMS, and credit balance.

## Volume pricing

High-volume customers get custom pricing. Contact [sales@nixflex.com](mailto:sales@nixflex.com) for a quote.

## Refunds

If a call fails due to a Nixflex error (not Twilio, not your endpoint), we credit it back automatically. You'll see `refunded` entries in your usage logs.

For billing questions, email [support@nixflex.com](mailto:support@nixflex.com).