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Chat

Chat basics

The chat is where you work with an AI model in Custodos. This page shows how to send messages, steer and rate replies, and find your chats again later.

Last checked on 28 September 2026

On this page

Starting a chat

  1. 1

    Open a new chat

    Click New chat in the sidebar.
  2. 2

    Check the model

    You choose the model in the message field. Auto uses your workspace's default model. The available models are described under Models.
  3. 3

    Write your message

    Type your question into the message field. Enter sends it, Shift and Enter starts a new line.
  4. 4

    Send or stop

    Click Send. While the reply is being written, the button turns into Stop, which ends the reply.

Reusing messages and replies

Every reply shows which model produced it. Even after you switch models, it stays clear who wrote what.

The actions sit right on the message. Some of them are only available on the latest message in the chat.

ActionWhereWhat happens
Copyon your latest message and on repliesThe text is copied to the clipboard.
Edit and resendon your latest messageYou change the message and send it again. The model replies to the new version.
Save as prompton your latest messageThe message becomes a template in the prompt library.
Regenerate with …on the latest replyThe reply is written again by the model currently selected in the message field. Its name replaces the dots. This action is not available for generated images.
Send againon a message without a replyCustodos sends the question again if the first attempt got no reply.

Taking tables and code from replies

If a reply contains a table, copy it with Copy table. You can choose Copy as CSV, Copy as Markdown or Copy as TSV. TSV pastes straight into Excel. Code blocks have their own Copy code button.

Rating replies

Use the thumbs below a reply to rate it as a Good response or a Bad response. After a bad rating you can pick a reason: Incorrect, Incomplete, Missed the point or Wrong sources or files. The reason is optional.

Clicking the same thumb again withdraws the rating, clicking the other one changes it. Replies that were stopped or ended with an error cannot be rated.

Incomplete replies and long chats

If a reply does not finish, Custodos shows the notice Saved progress. Any files created up to that point remain available.

Chat history

Your chats are listed in the sidebar, grouped into Today, Yesterday, Previous 7 days and Older. Load chats further back with Show older chats.

You only see your own chats. Chats that others have shared with you are listed separately under Shared with me. How sharing works is explained under Sharing chats.

Custodos gives every new chat a title automatically.

Searching chats

Search chats in the sidebar finds chats by their title. It shows up to 50 results, most recently updated first.

Renaming, organising, deleting

The commands are in the Chat options menu next to each chat in the sidebar.

  • Rename gives the chat a new title. Alternatively, click the title at the top of the open chat and type a new one. Custodos never overwrites a title you set yourself.
  • Add to project assigns the chat to a project. See Projects.
  • Delete removes the chat and all its messages permanently. In the open chat, the same action sits at the top as the bin icon Delete chat.

Saving a chat as a PDF

  1. 1

    Open the print view

    At the top of the open chat, click the printer icon Export as PDF (print dialog). The print view opens in a new tab.
  2. 2

    Start the print dialog

    Click Print / Save as PDF.
  3. 3

    Save as PDF

    In your browser's print dialog, choose “Save as PDF” as the destination.

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