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

# Price

Detailed instructions on billing rules, how to recharge, and how to check billing.

# Model Pricing

Using [Claude Opus 4.7](https://routerlink.ai/m/Claude%20Opus%204.7) (API Format: Anthropic) as an example:

<Frame>
  <img src="https://mintcdn.com/matrixlabs/otOA7WkH2BQDpyWi/images/image-90.png?fit=max&auto=format&n=otOA7WkH2BQDpyWi&q=85&s=a8495129b60abb58eb47cfa44ff7683d" alt="Image" width="972" height="341" data-path="images/image-90.png" />
</Frame>

## What is a token?

A token is the basic unit of text that the model processes. Tokens are not the same as characters or words — they are text fragments determined by the model's own tokenizer.

| Text Example                    | Approx. Characters | Approx. Tokens       |
| ------------------------------- | ------------------ | -------------------- |
| English word                    | 4–5 characters     | \~1 token            |
| Chinese character               | 1 character        | \~1.5–2 tokens       |
| 1,000-word English article      | \~5,000 characters | \~750 tokens         |
| 1,000-character Chinese article | \~1,000 characters | \~1,500–2,000 tokens |

> These are estimates. Different providers such as OpenAI, Google, and Anthropic have slightly different token calculation rules.

## Token Types and Billing Rules (Claude Opus 4.7)

### Input Tokens (Prompt) — \$5 / million

Everything you send to the model — system prompt, conversation history, user messages, uploaded documents — all counts as input tokens.

### Output Tokens (Completion) — \$25 / million

The text the model generates in response. Output tokens cost 5× more than input tokens, so keeping responses concise has a meaningful impact on cost.

### Cached Tokens — Billed at 0.25× input rate

Prompt content served from cache is charged at only 25% of the normal price. Useful for long system prompts or repeated context, and can significantly reduce costs.

## Cost Estimation Examples

| Scenario                | Input       | Output     | Estimated Cost |
| ----------------------- | ----------- | ---------- | -------------- |
| Short conversation      | 1K tokens   | 500 tokens | \~\$0.020      |
| Medium task             | 10K tokens  | 3K tokens  | \~\$0.138      |
| Large codebase analysis | 100K tokens | 10K tokens | \~\$0.825      |

# Top-Up

After logging into your account on[ the Routerlink model page](https:/routerlink.ai/models), click your avatar in the top-right corner, then click “Top-Up”.

<Frame>
  <img src="https://mintcdn.com/matrixlabs/5x9QSa7HABW32Owi/images/image-21.png?fit=max&auto=format&n=5x9QSa7HABW32Owi&q=85&s=8722d9da6ed42eae04bcfd1fa5445b35" alt="Image" width="1170" height="731" data-path="images/image-21.png" />
</Frame>

## Platform Fee

| Payment Method | Fee | Note            |
| -------------- | --- | --------------- |
| Credit card    | 0   | minimum ≥ 2 USD |
| Alipay         | 0   | minimum ≥ 2 USD |

When you top up USD, you will receive WAI Credits. 1,000 WAI Credits = \$1.00 USD.\
New users will receive \$2 worth of credits.

# Billing

You can view detailed Billing, Logs, and Usage information at [here](https://routerlink.ai/settings/billing).

<Frame>
  <img src="https://mintcdn.com/matrixlabs/5x9QSa7HABW32Owi/images/image-22.png?fit=max&auto=format&n=5x9QSa7HABW32Owi&q=85&s=cb71f5b8d5e0f0b39f194d21191207ca" alt="Image" width="1069" height="732" data-path="images/image-22.png" />
</Frame>