Not covered in the headline but in the article Google claims its Big Sleep AI detected that a threat actor was about to start exploiting an SQLite vulnerability and was able to stop the zero-day attacks before they happened.
The AI could not have possibly done that, but the blog says "through a combination of threat intelligence and Big Sleep."
I am not sure what "threat intelligence" precisely means here but it was definitely not just the AI system which stopped this - "imminently going to be used" could suggest old-fashioned human intelligence from a mole on the dark web, etc etc.
Which seems like a pretty big deal.