> ## Documentation Index > Fetch the complete documentation index at: https://docs.openlit.io/llms.txt > Use this file to discover all available pages before exploring further. # Chat Settings > Configure Otter's AI Provider, Model, and Vault API key on the Chat Settings page before using the AI chat assistant **Chat Settings** (`/chat/settings`) configures which model Otter uses. Page title: **Chat Settings**. Description: *Configure the AI provider for the chat feature*. Open it from the gear control in the Otter sidebar, or go directly to `/chat/settings`. ## Fields | Setting | Label in UI | Notes | | -------- | ------------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------- | | Provider | **AI Provider** | Providers come from [Manage Models](/latest/openlit/costs/manage-models/overview) (built-in plus any you added). | | Model | **Model** | Models for the selected provider, including custom ones. Hint: *Models are managed in Manage Models. Custom models you add there will appear here.* | | API key | **API Key (from Vault)** | Pick a Vault secret, or use **Create new** to open **Create a new secret** (Key, Value, Tags) without leaving Settings. | Click **Save Configuration** the first time, or **Update Configuration** when editing an existing setup. Success toast: **Chat configuration saved**. You must fill all three fields. If no provider is selected yet, the model field prompts you to select a provider first. A **Configured** chip shows the current provider / model / vault key when settings are already saved. ## Related Models and prices are edited on Manage Models; secrets are stored in Vault. Otter only stores a reference to the Vault secret - the key is not sent to the browser as part of chat messages. *** Add providers and models Otter can select Store the provider API key Otter should use