Mixed
At an absolutely glacial pace, it will sometimes write some almost-correct unit tests
ryukoposting on Hacker News
In the thread “ChatGPT Pulse”, replying to this comment
Helped: Running it in background during meetings or email time.
Got in the way: Glacial pace and only almost-correct unit tests.
… The only model I've had any luck with as an agent is Sonnet 4 in reasoning mode. At an absolutely glacial pace, it will sometimes write some almost-correct unit tests. This is only valuable because I can have it to do that while I'm in a meeting or reading emails. …