No
Personally, it acts, talks, and makes mistakes like GPT models, for a much more exorbitant price
jorl17 on Hacker News
In the thread “GPT-5.5”, replying to this comment
Got in the way: Endless tangents, minimal effort, misses edge cases, high cost.
… Some say it goes off on endless tangents, others that it doesn't work enough. Personally, it acts, talks, and makes mistakes like GPT models, for a much more exorbitant price. Misses out on important edge cases, doesn't get off its ass to do more than the bare minimum I asked (I mention an error and it fixes that error and doesn't even think to see if it exists elsewhere and propose fixing it there). …