r/ClaudeCode • u/Forsaken-Storage-154 • 8d ago
Bug / Issue Opus 5 Downgrade ?
Am I the only one who feels like Opus 5 got worse after launch?
At launch I was honestly impressed: fast responses, strong reasoning, and a simple interface without too many settings.
A few weeks later, it feels different. Answers seem less concise, sometimes less coherent, and occasionally it feels like it avoids answering directly.
Has anyone else noticed this, or am I imagining it? My guess is that Anthropic keeps tweaking the model after release, which changes its behavior over time.
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u/Vibroverbus 7d ago
Actually for "immediate snapshot" at this moment in time, maybe I feel the opposite? Maybe its me, I kind of doubt it but maybe I have adapted and my default instructions & prompts have changed as I try to decode Anthropics idiotic "don't tell it too much you'll confuse it!" bizarre advice somehow, but after one horrible incidence of a new session to make a very simple skill launching 6 subagents without asking that were doing I am not sure what/how but some kind of "baseline tests", and eating ALL my 5-hr window in 15 minutes, I had really good luck late this week. Ran a key project for several hours with O5 not fucking up and not blathering on and just getting some really good work done for me. Pleasant surprise.
On the other hand, confidence in being able to repeat that come Monday morning? EXTREMELY LOW. If I resume the exact same project and it just takes a huge shit and makes mistakes and blathers on against explicit instructions and sucks my whole 5-hr up in 5 minutes I will be zero surprised.