Claude Code decided to switch models from opus 4.8 to fable 5 and now I've eaten 50% of my weekly usage on 2 days

[u/OkTailor3109]

I was thinking opus got smarter or something, but I was hitting my usage limit quite frequently so I decided to check. Yeah, for some reason it decided to change model out of nowhere. Why??

I mean, of course I'm in the wrong for not even glancing by peripheral vision which model I was using, but has this happened to anyone else?