something feels off with Opus 5.5 I want to run this cheetah pixel art test this doesn’t prove anything about the nerf thing but I still want to re-run it and see if it generates this level of motion again... anyone else noticing the change?
Harshith
@HarshithLucky3Sep 24
Claude Opus 5.5 High vs GPT 6 Astra Max > 640×360 pixel art of cheetah running look at the difference

Oct 20, 2026 · 8:10 PM UTC

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Have you tried it yet? How did it go?
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Yeh much worse results in general across a variety of 3d tasks compared to last week. Such a shame as it was so good at that. xitter.cf/wizardbrainz/status/21…
wbk ᕦ(ò_ó )ᕤ
@wizardbrainz21h
Opus seems a bit subpar these past few days.. Vibemaker + Opus 5.5 ASMR
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my usage limits and model performace are very bad now. 20 dolar plan and ilke my limits gone
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Pankaj Kumar
@pankajkumar_devOct 21
its nerfed, i am also faced this issue from yesterday. quality and limits dropped.
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I did this with my Stickman fight today. The new animation looked as good as the launch one, maybe better, but used more tokens. Curious to see how the cheetah rerun turns out. xitter.cf/DanielZambrini/status/…
Daniel Zambrini
@DanielZambriniOct 21
Was Opus 5.5 really nerfed? I just repeated my Stickman fight test, and what I got is as good as the day it launched (maybe even better?) The only big difference is that it consumed more tokens
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