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

# Model

> Download and manage the local AI model that runs on your Mac.

export const ModelsFaq = () => <AccordionGroup>
    <Accordion title="Do I have to download a model before I can use the AI locally?">
      Yes, to run AI locally on your machine you first need to download a <strong>local model</strong>. Open <strong>Settings → Model</strong>, pick one from the catalog, and download it. You only do this once per model; you can add or update models anytime.
    </Accordion>
    <Accordion title="Which model should I download?">
      Open <strong>Settings → Model</strong> and browse the <strong>catalog</strong>, each model lists its size and whether it fits your memory. Check your <strong>device profile</strong> (memory, GPU, CPU cores) for guidance. You can always download a different one later.
    </Accordion>
  </AccordionGroup>;

Open **Settings** from the **account menu at the bottom left of the sidebar**, then choose **Model** to download and manage the local AI model on your Mac.

Depending on how you use webAI, inference may also run via a network-hosted Persona or a cloud model you connect with your own API key. This section covers **local models** you download to your device.

## Download a local model

* **Download a local model** to run AI on your machine, with visible progress and the option to re-download or update later.
* Browse and pick from a **model catalog**, with guidance on each model's size and whether it fits your device's memory.
* See your **device profile** (memory, GPU, CPU cores) to judge which models you can run.

<Steps>
  <Step title="Open Settings → Model">
    Open **Settings** from the account menu at the bottom left of the sidebar, then choose the **Model** section.
  </Step>

  <Step title="Pick a model that fits your Mac">
    Browse the **model catalog**: each entry shows its **size** and whether it fits your device's memory. Your **device profile** (memory, GPU, CPU cores) helps you judge what you can run.
  </Step>

  <Step title="Download it">
    Click **Apply** to start the download and watch the progress. You can re-download or update a model later at any time.
  </Step>
</Steps>

<Tip>
  Pick a model that comfortably fits your **device profile**: it will feel faster and more responsive.
</Tip>

## Personas

Under **Settings** → **Model**, open the **Personas** list to review the personas on your device. Click the **pencil icon** next to a persona to edit it.

For creating personas, chatting on the **Personas** tab, and the full persona guide, see [Personas](/using-webai/personas).

## Common questions

<ModelsFaq />

<Note>
  More answers are in the [FAQ](/support/faq#models--storage).
</Note>