A few days ago, I wrote about Opus 5.5 being nerfed. One theory was that this was because of testing Fable 5.2, so I wanted to check again, since Fable has now launched.
Here’s a chart of Opus 5.5’s reported reasoning tokens per request, relative to alternative models in the same battles. The vertical line is the Fable release date, November 9:
From our data alone, we can only say that it’s likely that Opus is still nerfed. The p-val on the bootstrap test of before and after the Fable launch is p=0.105.
source & further reading
micjm.com — original article
GPT 6.1 Sol seems to do worse on long-tail languages.
Get ready for fewer Opus 5.5 em-dashes