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

# Pricing

> Free tier to get started; customizable plans for professional and enterprise use.

Arrays has two billing models — a **subscription** for predictable, all-data access, or **Nanopayment** to pay per call with no signup. Both work across [Skills](/skills/overview) and the [REST API](/api-reference/introduction).

## Subscription plans

<CardGroup cols={3}>
  <Card title="Free" icon="key">
    **\$0 / month**

    * Basic-tier endpoints
    * Community support
    * All Skills usable

    [Get a free key →](https://arrays.org)
  </Card>

  <Card title="Pro" icon="star">
    **Custom pricing**

    * Higher request quota
    * All endpoints (basic + advanced)
    * Email support
    * 99.5% uptime target

    [Talk to sales →](mailto:support@arrays.org)
  </Card>

  <Card title="Enterprise" icon="building">
    **Custom pricing**

    * Custom quota
    * Dedicated infrastructure
    * Slack support channel
    * SLA + custom DPA

    [Talk to sales →](mailto:support@arrays.org)
  </Card>
</CardGroup>

## Pay-per-call · Nanopayment

No subscription. Pay only when you call — usage-based per-call pricing in USDC.

[Read the Nanopayment guide →](/nanopayment/overview)

## FAQ

<AccordionGroup>
  <Accordion title="Can I mix a subscription and Nanopayment?">
    Yes. A subscription covers steady workloads at predictable cost; Nanopayment handles bursts or experiments where signing up isn't worth it.
  </Accordion>

  <Accordion title="What happens when I hit my daily quota?">
    Further requests return `429 Too Many Requests` until midnight UTC. The Dashboard shows a live counter and an Upgrade CTA before you hit the limit.
  </Accordion>

  <Accordion title="How do I get a quote?">
    Email [support@arrays.org](mailto:support@arrays.org) with your expected volume and the endpoints you care about — we'll tailor a plan.
  </Accordion>

  <Accordion title="Do you offer student / OSS discounts?">
    Email us at [support@arrays.org](mailto:support@arrays.org) with your project and we'll work something out.
  </Accordion>
</AccordionGroup>

## Ready?

<CardGroup cols={2}>
  <Card title="Get a free API key" icon="key" href="https://arrays.org">
    Sign up in 30 seconds, no credit card.
  </Card>

  <Card title="Talk to sales" icon="envelope" href="mailto:support@arrays.org">
    Custom needs, SLA, or large volume.
  </Card>
</CardGroup>