Is Opus 5.5 nerfed? Thinking patterns changed on November 3
2 comments
- Points548
- Comments387
2 comments
Story details from Hacker News ↗ · linked article on twitter.com.
Is Opus 5.5 nerfed? Thinking patterns changed on November 3 was first seen on Hacker News · Front page on Nov 9, 2026. Since then it has appeared in 63 checks on 2 different days. Its best position was #2 of 30, reached on Nov 9, 18:54 UTC. It dropped off the list after Nov 10, 02:09 UTC.
Position on Hacker News · Front page at every check (lower is better).
Best rank per day (UTC).
Platform metric as reported by Hacker News.
A few top-level comments from Hacker News, shortened. Read the full thread on Hacker News.
I don't have any evidence/study to substantiate this but I have the feeling there's a _massive_ amount of fiddling with the quant/functionality of the models at different stages of the release cycle and account freshness. Every time a new model drops it feels wildly powerful, then regresses to some sort of generic…
What I'm surprised by is that no-one has mentioned that FAANG companies run experiments (often multiple overlapping ones) on 99% of the traffic. You're almost never getting "vanilla". And Anthropic is full of talent from those places. If you look at any sort of tracker, there's no telling whether you're in the same…
The local Qwen 3.8 27B might not be anywhere near as smart as Claude's models but I never wake up one morning and wonder if I am part of some test model to see if I will accept something somewhat less capable or not trained as well in the tools I am using day to day. Its also not suddenly going to start refusing to…
Archived daily, weekly and monthly lists that include this entry.
Not at the moment. It was last on the list on Nov 10, 02:09 UTC, after 2 days of trending.
#2 on Hacker News · Front page, on Nov 9, 18:54 UTC. Trendoday checks this list every 15 minutes.
It was first seen on Nov 9, 2026 and has been on the list on 2 days (63 checks) since.
548 points and 387 comments; submitted by rzk on Nov 9, 2026.