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

# Billing Overview

> Understand Delino's billing system, subscription tiers, and payment processing.

Delino uses a transparent, credit-based billing system for payment processing. This guide covers subscription tiers, billing cycles, and how credits work.

## Billing System

### Credit-Based Model

Delino uses a credit system for precise usage tracking:

<ResponseField name="Conversion Rate" type="number">
  **\$1 USD = 1,000,000 credits**

  All internal calculations use credits for precision, with conversion to USD only at invoice generation.
</ResponseField>

**Examples**:

```
$0.001 USD = 1,000 credits
$0.01 USD = 10,000 credits
$0.10 USD = 100,000 credits
$1.00 USD = 1,000,000 credits
$10.00 USD = 10,000,000 credits
```

### Why Credits?

<AccordionGroup>
  <Accordion title="Precision">
    Credits allow for sub-cent pricing without floating-point errors

    Example: 150 credits = \$0.00015 USD (precise to 6 decimals)
  </Accordion>

  <Accordion title="Performance">
    Integer arithmetic is faster and more reliable than decimal calculations

    All database operations use bigint for credits
  </Accordion>

  <Accordion title="Consistency">
    No rounding errors or currency conversion issues

    Credits are the single source of truth for billing
  </Accordion>
</AccordionGroup>

## Subscription Tier

Delino offers a Pro subscription tier for all accounts:

<Info>
  **Pro tier is required for all accounts** (both personal and team accounts)
</Info>

**Pricing**: \$10/month

**Includes**:

* \$10 worth of credits (10,000,000 credits) per month
* Access to all services
* Priority support
* Advanced features

**Trial**:

* **Personal Pro**: 7-day free trial on first subscription
* **Team Pro**: No free trial, immediate payment required

**Usage Charges**: Pay-as-you-go for usage beyond included credits

**Checkout**: Handled through secure payment gateway

### Pro Tier Details

<CardGroup cols={2}>
  <Card title="Personal Pro" icon="user">
    **Subscription**: \$10/month

    **Free Trial**: 7 days on first subscription

    **Included Credits**: \$10 (10,000,000 credits)
  </Card>

  <Card title="Team Pro" icon="users">
    **Subscription**: \$10/month per team

    **Free Trial**: None (immediate payment)

    **Included Credits**: \$10 (10,000,000 credits)
  </Card>
</CardGroup>

## Billing Accounts

Every user and team has a separate billing account:

* **Personal Account**: Individual billing with 7-day trial
* **Team Account**: Team billing, no trial, immediate payment required

## Billing Cycle

Billing cycles are monthly, based on your account creation date. At the end of each cycle, credits are reset and a new billing period begins.

## Account Status

Billing accounts can have different statuses:

<Tabs>
  <Tab title="Active">
    **Status**: Normal operation

    **Characteristics**:

    * Payment method configured
    * Recent payment successful
    * All services accessible
    * No restrictions

    **Actions**: None required
  </Tab>

  <Tab title="Grace Period">
    **Status**: Recent payment failed

    **Characteristics**:

    * Payment failure occurred
    * 3-day grace period active
    * Services still accessible
    * Warning displayed

    **Duration**: 3 days from payment failure

    **Actions**: Update payment method before grace period ends
  </Tab>

  <Tab title="Suspended">
    **Status**: Payment failed, grace period expired

    **Characteristics**:

    * Grace period expired without payment
    * Services suspended
    * No API access
    * Data retained

    **Actions**: Update payment method to restore service immediately
  </Tab>
</Tabs>

### Grace Period Details

<Info>
  3-day grace period on payment failure before service suspension
</Info>

**Timeline**:

```
Day 0: Payment fails → Status: grace_period
Day 1: Grace period active → Services accessible
Day 2: Grace period active → Services accessible
Day 3: Grace period ends → Status: suspended
```

**During Grace Period**:

* All services remain accessible
* Warning messages displayed
* Email notifications sent
* Payment retry attempts

**After Grace Period**:

* Services immediately suspended
* API requests rejected
* Dashboard access limited
* Service restoration upon successful payment

## Next Steps

<CardGroup cols={2}>
  <Card title="Usage Tracking" icon="chart-line" href="/core/billing/usage">
    Learn how to monitor your usage and costs
  </Card>
</CardGroup>