Same here Fable has been thrash on my 5x Max, it's definitely been quantized, but not through API which is 10-20x as expensive.

So yeah, different people get different quality. I wouldn't be surprised if it calculates a wealth level, willingness to upgrade, influence, usage levels, etc. and decides what models to serve.

It's extremely obvious to me they've nerfed all models on my 5 Max from Fable to even 4.6, but i've tried through enterprise with huge differences in quality, and i've seen other people experiencing this both on reddit and twitter.

It's blowing my mind. Fable is the only AI model I use for coding, everything else is garbage for my use case.