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

# Billing & Credits Overview

> Understand the Fusion credit system — how credits work, what costs what, and how to manage spending.

Fusion uses a **credit-based billing system**. Credits are the currency for all platform actions — publishing quests, storing data, running experiments, and more.

## How Credits Work

| Concept           | Value                                   |
| ----------------- | --------------------------------------- |
| **1 credit**      | 1 cent                                  |
| **Starter bonus** | Free credits for every new organization |

Credits are managed at the **organization level**. Every action that costs credits is charged to the organization that owns the quest. See the **[Pricing page](https://usefusion.ai/pricing)** for current credit values and costs.

## What Costs Credits

The following actions consume credits from your organization's balance:

| Action                      | Category            |
| --------------------------- | ------------------- |
| Publish a quest             | Quest & Experiments |
| Participant joins a quest   | Quest & Experiments |
| Experiment data submission  | Quest & Experiments |
| Brain recording (EEG)       | Data Collection     |
| Prompt response stored      | Data Collection     |
| Health data sync (wearable) | Data Collection     |
| Dataset storage             | Storage             |
| AI data analysis            | Analysis & AI       |
| Analysis script execution   | Analysis & AI       |

For current prices, see the **[Pricing page](https://usefusion.ai/pricing)**.

### Free Actions

These actions are **free** and do not consume credits:

* Creating a quest (draft)
* Editing a quest
* Adding prompts and experiments
* Configuring onboarding
* Onboarding responses (no charge)
* Viewing data in the dashboard
* Adding organization members

## Re-Publishing Is Free

The first time you publish a quest, it costs credits. **Re-publishing** the same quest (after unpublishing and making changes) is free — the system checks for a prior publish transaction.

## Debt Tolerance

Some operations allow a small amount of debt to prevent data loss:

| Action                                          | Debt Allowed                                          |
| ----------------------------------------------- | ----------------------------------------------------- |
| Publishing a quest                              | ❌ No — strict check, returns error if balance too low |
| Data collection (experiment, prompt, EEG, etc.) | ✅ Yes — small debt allowed                            |

<Info>
  Data collection actions never fail due to insufficient credits. The system allows a small amount of debt so participant data is never lost. Publishing, however, requires a sufficient balance.
</Info>

## Low Balance Warning

When your organization's credit balance is running low, an amber warning appears on the dashboard:

> *"Your credit balance is running low. Add credits to continue using premium features."*

## Price Calculator

Use the **interactive price calculator** at [usefusion.ai/pricing](https://usefusion.ai/pricing) to estimate costs for your study based on participant count, prompts, experiments, and data types.

## Explore

<CardGroup cols={3}>
  <Card title="Purchasing Credits" icon="cart-shopping" href="/billing/purchasing-credits">
    Buy credits with Stripe.
  </Card>

  <Card title="Expense Breakdown" icon="chart-pie" href="/billing/expense-breakdown">
    Track spending per quest and item type.
  </Card>

  <Card title="Funding Other Orgs" icon="arrow-right-arrow-left" href="/billing/funding-other-orgs">
    Transfer credits between organizations.
  </Card>
</CardGroup>