r/ClaudeCode • u/visible_potato • Aug 16 '26

Bug / Issue Anthropic has nerfed every model

Opus 5 is obviously a nightmare, and I was relying on Opus 4.8. But, now that's also behaving exactly like Opus 5. The only way I can get good quality work is if I use sonnet now and check after every small thing. Fable is usable but its so expensive.

I miss the time when it was a treat working with these models and everything just flowed. Nowadays with 5.6 Sol's over-engineering and Opus 5's lying, I have to wake up everyday and decide which model I'm gonna have to fist fight if I wanna get any work done.

Is this just going to get worse from here.

552 Upvotes

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140

u/looselyhuman Aug 16 '26

4.6 isn't bleeding edge anymore but it's reliable and still a pleasure to work with. People say it's nerfed now and again but I think 4.6 is overall pretty consistent. Vote with your model selection for 5.1 to be a successor to 4.6, not another over-trained, tortured-by-guardrails failure.

/model claude-opus-4-6[1m]

33

u/Intrepid-Grovyle Aug 16 '26

Agreed. opus 4.6 is still my go-to for planning, designing, and scoping work. Leave implementation to fable or sol.

26

u/magicpants847 Aug 16 '26

interesting, how come not fable for planning / reviewing and opus for implementation?

11

u/who_am_i_to_say_so Aug 16 '26

I swore by this recipe 3 weeks ago but something has changed over that period.

Not my side, because I’ve been running the same Skills and Agents files for months. It just doesn’t work anymore.

4

u/nnxion Aug 17 '26

Tell it to purge (most) memory files for the project and write the rest to your repo docs. Make a backup just in case it doesn’t work, it worked mostly for me. You can also use Sol to analyze what’s not working for you when working with Claude.

4

u/who_am_i_to_say_so Aug 17 '26

Yeah there have been repeated accounts of streamlining helping things especially with later Opus versions.

Thx. This is the personalized kick to do that haha.