# Credit & Billing

Everything you need to know about payments, credits, and billing on Tensorix.

***

## How Billing Works

Tensorix uses a **prepaid credit system**. You add credits to your account and pay only for what you use based on token consumption.

```
Cost = (Input Tokens × Input Price) + (Output Tokens × Output Price)
```

{% hint style="info" %}
**View Live Pricing**: [tensorix.ai/models](https://tensorix.ai/models) - Pricing displayed per 1M tokens.
{% endhint %}

***

## Payment Methods

We accept multiple payment options to make it easy for developers worldwide:

| Method                | Type        | Supported                |
| --------------------- | ----------- | ------------------------ |
| **Credit/Debit Card** | Traditional | ✅ Visa, Mastercard, Amex |

***

## Adding Credits

To add credits to your account:

1. Log in to [app.tensorix.ai](https://app.tensorix.ai)
2. Navigate to your [dashboard](https://app.tensorix.ai/dashboard)
3. Click **Add Credits**
4. Choose your payment method and amount
5. Complete the payment

Credits are added to your account instantly after successful payment.

***

## Balance Management

### Minimum Balance Requirement

{% hint style="warning" %}
**Important:** When your balance falls below **$0.05**, your account and API keys will be automatically disabled to prevent negative balance.

You must top up your account to re-enable access.
{% endhint %}

### Low Balance Notifications

You'll receive notifications when your balance is running low:

* Email alerts at configurable thresholds
* Dashboard warnings when balance is low

### Re-enabling Your Account

If your account has been disabled due to low balance:

1. Log in to [app.tensorix.ai](https://app.tensorix.ai)
2. Add credits to your account
3. Your API keys will be automatically re-enabled once your balance is above $0.05

***

## Usage & Monitoring

Track your credit usage and API activity in your [dashboard](https://app.tensorix.ai/dashboard):

* 📊 **Usage History** - See all API requests and costs
* 💰 **Credit Balance** - Check remaining credits
* 📈 **Usage Trends** - Monitor your consumption over time
* 🔑 **API Key Usage** - Track usage per API key

***

## Pricing

Pricing is based on token usage. Each model has different rates for input and output tokens.

{% hint style="success" %}
**View Current Pricing**: [tensorix.ai/models](https://tensorix.ai/models)

All pricing is displayed per 1M tokens.
{% endhint %}

### How to Estimate Costs

* **1 token ≈ 4 characters** of English text
* **100 tokens ≈ 75 words**
* A typical API request with a short prompt and response might use 500-2000 tokens

### Cost Optimization Tips

1. **Choose the right model** - Use smaller/faster models for simple tasks
2. **Set max\_tokens** - Limit output length when appropriate
3. **Use system prompts efficiently** - Keep them concise
4. **Cache responses** - Don't repeat identical queries
5. **Monitor usage** - Check your dashboard regularly

***

## Refund Policy

{% hint style="info" %}
**24-hour refund window.** If you need a refund, contact <support@tensorix.ai> within 24 hours of your purchase. After 24 hours, all purchases are final and credits become non-refundable.
{% endhint %}

We recommend starting with a small amount to test the platform before making a larger purchase.

***

## FAQ

### Do credits expire?

No, credits do not expire. Use them whenever you need.

### Can I get an invoice?

Yes, every top-up generates an invoice you can download yourself:

1. Sign in to the [dashboard](https://app.tensorix.ai).
2. Open **Billing** from the sidebar.
3. In the **Recent Transactions** list, click the **Invoice** button next to the deposit you want.

The invoice opens in a new tab with a **Download PDF** option.

### What happens when I run out of credits?

When your balance falls below $0.05, your account and API keys will be disabled. API requests will return authentication errors. Add credits to re-enable your account.

### Is there a minimum purchase?

Check [tensorix.ai](https://tensorix.ai) for current minimum purchase amounts.

### Can I set up auto top-up?

Contact <support@tensorix.ai> to discuss auto top-up options for your account.

***

## Need Help?

* 📧 **Email**: <support@tensorix.ai>
* 💬 **Contact Support**: [Contact page](https://github.com/Tensorix-ai/tensorix-docs/blob/main/support/support/README.md)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.tensorix.ai/billing/billing.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.