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

# Choosing a model

> Browse image and video model families and understand what changes when you switch.

The model list comes from the server, not from this documentation — what you see depends on your plan and your organization. Free accounts get a curated selection; VIP and SVIP accounts get all models.

## Filtering the list

<Frame caption="The video model selector, filtered by input type">
  <img src="https://mintlify.s3.us-west-1.amazonaws.com/wji/images/9%E6%9C%881%E6%97%A5(15).gif" alt="Model selector showing the input type filter row above the family filter row, with matching models listed" />
</Frame>

<Tabs>
  <Tab title="Image models">
    Filter buttons group models into families: **All**, **Nano Banana**, **GPT Image**, **Seedream**, **Unfiltered**, and **Other**.
  </Tab>

  <Tab title="Video models">
    Two filter rows. The first is by **input type** — all, first frame, first and last frame, reference image, reference video, reference audio. The second is by **family** — Kling, Veo, Sora, Seedance, Wan, Hailuo, unfiltered, other.

    The input-type filter is the useful one. If you need to animate a still you already have, filter to *first frame* and you only see models that can do it.
  </Tab>
</Tabs>

Each entry shows the model's avatar, name, and a one-line description.

## What a model's capabilities look like

WJI does not list capabilities as badges. Instead, **the controls change when you switch models**. A setting that is not there is a setting that model does not support.

Switching models can also change your existing settings:

| If the new model...                | WJI...                                                |
| ---------------------------------- | ----------------------------------------------------- |
| Does not support your aspect ratio | Moves you to the closest ratio it does support        |
| Accepts fewer reference images     | **Drops the extra ones from the front of the list**   |
| Does not accept references at all  | Tells you the model does not support reference images |
| Has different duration limits      | Applies its own default duration                      |

<Warning>
  The reference trimming is worth remembering. If you have five references and switch to a model that takes three, you keep the **last three** — the ones you added first are removed.
</Warning>

Switching models also clears the final prompt and re-optimizes it.

## Aspect ratio fallbacks

Inside a workspace, if the new model does not support your current ratio, WJI first tries the workspace's default ratio, and only then falls back to the model's first supported ratio.

## Model-specific settings

Anything unique to a model appears in the settings popover as a dynamic form. Common examples:

* **Seed** — `-1` means unspecified
* **Resolution** or output size
* **Chaos**, **quality**, **stylize**, **raw mode**, **HD** on Midjourney-family models
* **Task mode**, **auto duration**, **output format** on Seedance video models
* **Speaker**, **speech rate**, **pitch**, **loudness** on text-to-speech models

<Note>
  There is no negative prompt field in WJI. Describe what you want rather than what you do not.
</Note>