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> what is the use for fable then? Cybersecurity hardening. The one thing they don't allow the model to do.

• solumunus 4mo ago
  That’s Mythos. Fable isn’t specifically for that I don’t think, just an enhanced ability and persistence of Opus.
  • matheusmoreira 4mo ago
    Fable is itself a "Mythos class" model. It can do everything Mythos can do. Anthropic's classifier just doesn't allow it to do it.
    • helloplanets 4mo ago
      Definitely not just a classifier layered on top, although there is one of those as well. Pretty sure it's different post-training / finetune run and the model weights are different between them. Which is bound to have effects on the model output even in general use, although I'd imagine they have pretty stringent evals to make sure it doesn't regress too much in things they don't want to restrict.
  • adastra22 4mo ago
    Fable is consumer-branded Mythos.