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

# Group behavior and pricing

In our system, **groups** matter for routing, pricing, and what you can choose.

## 1. Channel differences

* The same model (e.g. GPT, Claude) may use different channels per group.
* Different channels mean different costs and therefore different prices.

## 2. Price transparency

* API prices vary in the market largely because channels and cost structures differ.
* We use **clear, listed pricing** so rules are easy to find.

## 3. Your choice

* Pick a group by performance, stability, and price.
* More flexibility for different budgets and use cases.

***

# “Official rate” multiplier

To relate our prices to vendor list prices, we use an **official rate** multiplier:

* Billing on this site is in **CNY**.
* Model pages show **vendor list price (converted to CNY)**.
* Your charge = **list price × group rate**.

## Examples

1. **Rate = 1**\
   Charged at list price (same basis as the vendor).

2. **Rate = 0.4**\
   Charged at **40%** of list price (i.e. **60% off** list).

The official-rate concept makes it easier to compare groups and pick what fits your budget.