Hey, I can see from the screenshot that the /Summarize command really doesn’t show up in the default list when you type /. This isn’t a bug, it’s a change in the new slash menu. Action commands like Summarize and Reset are now hidden from the main list and only show up once you start typing.
To run summarization, just start typing /summarize in the chat. The command will appear in the dropdown. Press Enter and it’ll work like before.
One important thing: the command is only available in chats that already have at least one message. In a brand new empty chat it won’t show up since there’s nothing to summarize.