Babylon 5 Crusade had a device called The Apocalypse Box. It knew everything and you could ask it questions. Unfortunately, it lied strategically so as to both give you an edge here and there whilst it drove you insane with all the lying. I have always seen the similarity to large language models here myself and that was in 1999.

https://babylon5.fandom.com/wiki/Apocalypse_Box

What has surprised me is that JMS has never seemingly noticed this.