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

# Model

> Choose the default play model used by new games.

## Find the default model

Open **Settings** in your profile and scroll to **Default Play Model**. The page lists available models with notes about speed, cost, and stability.

<Frame caption="Chinese UI screenshot: default play model setting">
  <img src="https://mintcdn.com/xunmee/KrVlVFGhu4wEu68R/images/player/profile-model.png?fit=max&auto=format&n=KrVlVFGhu4wEu68R&q=85&s=677e6870bf3d13e990bbafea485d24ee" alt="Profile settings showing the default play model and speed, cost, and stability notes" width="1180" height="230" data-path="images/player/profile-model.png" />
</Frame>

Select the option that fits your preference. This setting applies to new games; existing saves do not change.

Use speed when you want quicker replies, cost when you want to control consumption, and stability when you prefer a steadier experience. You do not need to memorize model names; compare the notes shown on the page.