[Bug] Claude Code falls back from Fable to Opus model during any task!!! execution after a while without any reason!!!

Open 💬 0 comments Opened Jul 9, 2026 by Stergios-Skgt

Bug Description
this is unbelievable and unacceptable because any time I try to do some serious work with the Fabel then after a
while just fall back to the opus. It's just a joke!!!!
So your new brand model just is not available!!!
I'm very disappointed,
Big talk, so I advise you to be more careful when you declare publicly that most of the cases does not fall back.
In our work that has nothing to do with cyber security and all these things just fall back from the start not
even once do the job.
So we consider the availability is not available.
Too much marketing.
I expect from you more responsibility,!!!

Environment Info

  • Platform: darwin
  • Terminal: Apple_Terminal
  • Version: 2.1.205
  • Feedback ID: 172a5a9d-3d82-47f1-825c-f61039e3bd66

Errors

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