I'd suggest anything able to match a professional doing knowledge work. Original research from recognisably equivalent cognition, or equal abilities with a skilled practitioner of (eg) medicine.

This sets the bar high, though. I think there's something to the idea of being able to pass for human in the workplace though. That's the real, consequential outcome here: AGI genuinely replacing humans, without need for supervision. That's what will have consequences. At the moment we aren't there (pre-first-line-support doesn't count).