(commented on the wrong thread, HN doesn't let me delete it :( )
They're comparing to Opus 4.6, not 4.5. It was Anthropic's best public model up until last week.
Some people would say it's still Anthropic's best public model!
Yeah, I noticed that, HN doesn't let me delete my comment.
The other release, Qwen-3.6-Max is the one comparing it to 4.5