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Deleting a chat thread removes it permanently. This can’t be undone, so Chief always asks you to confirm first.

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Delete a chat thread

Chief: delete a chat — the Chat actions menu with Delete this chat thread
  1. Open the chat. In the thread header, click the ⋯ (three-dot) Chat actions menu.
  2. Choose Delete this chat thread (the red trash item at the bottom of the menu).
  3. A confirmation dialog opens, titled Delete “[chat name]”?
  4. Read the warning, then click Yes, Delete Chat Thread. To back out, click Cancel or the X.
Chief: delete a chat — the confirmation dialog
⚠️ Important: If the chat is shared, deleting it removes it permanently for all users with access to the project — not just you. The dialog spells this out before you confirm.

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Deleting a single prompt instead of the whole chat

Chief: delete a single prompt — the trash button on a prompt
If you only want to remove one prompt-and-answer pair (available in Advanced Mode), hover over the prompt and use its delete button instead. Its tooltip explains: “Remove this prompt + response from chat thread view. (The LLM will still remember it.)” — so Chief keeps the context even though it leaves your view.

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FAQ

You can’t delete a chat while it’s still generating a response. The dialog shows: “Cannot delete this chat thread while a response is being generated. Please wait for the response to complete.” Wait for the answer to finish (or click Stop Generating), then delete — you’ll see a Delete later button in the meantime.
No. Deletion is permanent and can’t be recovered. If you’re unsure, rename or keep the chat rather than deleting it.
If you see “Failed to delete chat thread. Please try again,” it’s usually a temporary connection issue. Check the offline banner at the top of the screen, then try again.