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

# Use Your Own AI API Key

> Choose an AI provider, model, and provider API key for Inbox Zero features.

Inbox Zero covers AI costs by default, but you can optionally use your own model-provider API key.

<Note>
  This setting is for the AI provider that powers Inbox Zero features. It is different from the developer API keys in the **Developer** settings section, which authenticate requests to the Inbox Zero API.
</Note>

## Configure a Provider

1. Open the account menu at the bottom of the sidebar and choose **Settings**.
2. Expand the relevant email account.
3. Find the **AI Model** section.
4. Select a provider, enter the provider's model identifier and API key, then click **Save**.
5. Test the configuration on the **Assistant** or **Chat** page.

Leave the provider set to **Default** to use the AI service included with Inbox Zero.

## Providers in Settings

### Anthropic

Create a key in the [Anthropic Console](https://console.anthropic.com/settings/keys). Enter an Anthropic model identifier in the Model field.

### OpenAI

Create a key on the [OpenAI API keys page](https://platform.openai.com/api-keys).

<iframe width="560" height="315" src="https://www.youtube.com/embed/AQtB0j6Zmt0" title="YouTube video player" frameBorder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowFullScreen />

### Azure OpenAI

Use an Azure OpenAI API key and enter the Azure deployment name in the Model field.

### Google

Create a Gemini API key in [Google AI Studio](https://aistudio.google.com/app/apikey) and enter the corresponding model identifier.

### Groq

Create a key in the [Groq Console](https://console.groq.com/keys) and enter a model available to your Groq account.

### OpenRouter

Create a key in [OpenRouter](https://openrouter.ai/settings/keys). Use OpenRouter's provider-qualified model identifier, such as `provider/model`.

### Vercel AI Gateway

Create an AI Gateway API key in Vercel and use the model identifier expected by [Vercel AI Gateway](https://vercel.com/ai-gateway). Provider-qualified identifiers are recommended.

## Usage and Billing

When you use your own provider key, the provider bills that account according to its pricing and limits. Click **View usage** in the AI Model section to review the usage recorded by Inbox Zero. Provider-side billing remains the source of truth for charges.