They are so convincing that an emergent property of the Turing Test is also being shown: that real humans are called bots by people that genuinely believe the other is a bot.
The standard 3-person Turing test with 2 people talking and a third observing and trying to decide which is a computer, if any, has been summarily defeated.
(For the record, my comment above was in jest, to point out the real experience of humanity in most coding environments)
These days, I find it difficult to believe there's a human who couldn't be fooled with the right prompt.
When I run the Turing test, it's me testing the computer. I don't care if anyone else isn't able to discriminate. Of course there is no "standard Turing test" as that would imply that it's an some kind of bot testing another AI and obviously that fraud with issues.
The Turing test is a human testing the computer and that human is me.