# Chat Interface

uniGPT uses [LibreChat](<https://www.librechat.ai/>) as its web frontend, available at **[gpt.uni-muenster.de](<https://gpt.uni-muenster.de>)**.

## Starting a Conversation

1. Log in at [gpt.uni-muenster.de](<https://gpt.uni-muenster.de>).
2. Select a model from the model dropdown at the top of the chat.
3. Type your message and press **Enter** or click **Send**.

## Switching Models

You can switch between models at any time — even mid-conversation. Simply select a different model from the dropdown menu. This is useful for comparing outputs across models.

## Uploading Documents

You can upload documents (e.g., PDFs) directly into the chat. The model will parse and use the content to answer your questions.

Simply click the **attachment icon** (📎) next to the input field and select your file.

## Searching Chat History

You can search through your previous conversations using the search functionality in the sidebar.

> [!NOTE]
>
> This feature searches across all your past chats, making it easy to find previous results.

## Archived Chats

You can access archived chats by clicking on your **profile picture** in the bottom-left corner and selecting **archivierte Chats**.

## Copying Responses

When you copy a model's response, the reasoning/thinking text is also included for models that support a reasoning mode. (Whether this can be disabled is currently under review.)

## Signing Out

Click on your **username** in the sidebar, then select **Sign out**.

## Legacy Chats

If you had conversations in the old system (before February 2026), they are available at [gpt-legacy.uni-muenster.de](<https://gpt-legacy.uni-muenster.de>). You will need to log in again separately.