Fable 5 will default to Opus 4.8 for coding tasks

sriramgopalan

How can it be legal to charge a higher fee for the Fable model, if most of the usage will default to a cheaper model behind the scenes? It is one thing if I, as the user, choose to down-level but Claude shouldn't do this on its own.

mnmx6t

I must admit I was drawn to Claude because of their (obviously successful with me) publicity stunt about "being too dangerous to make widely available", when Mythos came out. It's a shame because I was really looking forward to use it specifically to find potential security holes in my own software. That being said, Opus 4.7/4.8 have been quite useful already, especially for finding things in the harder to test, non-happy paths. If I recall, Fable 5 is supposed to be basically Mythos which falls back to Opus 4.8 when dealing with cybersecurity. I wonder if that also includes "finding bugs that could lead to security exploits".

exabrial

crikey just use the real link: https://x.com/AnthropicAI/status/2072163884430229756

throwawayk7h

If fable 5 can't do code... what are people using it for?

tapvt

Is Opus 4.8 equally or more capabale for the actual mechanics of the coding work? It seems to me that having a powerful Fable layer for the planning, coordination, orchestration-type work and delegating to a suitable model for the actual execution of "coding tasks" is perfectly appropriate, if that is the case.

rvz

Now that's what I call a scam.

ChrisArchitect

[dupe] Discussion on this and the rest of the source post: https://news.ycombinator.com/item?id=48740771

jascha_eng

Can't wait for China to pull ahead so we have an end to this bullshit

Kim_Bruning

This is a testable claim. Gave it a small coding challenge. It wrote the code just fine.

LoganDark

This third-party mirror won't load for me. That aside, they said "some routine tasks like coding and debugging". Since I'm using it for coding right now and it's notably better than Opus 4.8, I think what they mean is that some coding and debugging tasks will fall back.

0xy

Fable is useless, then. What's the point of re-enabling it exactly?

jimrandomh

This is a misinterpretation. Fable 5's acceptable use policy has false positives during some coding tasks, and that's what they were talking about. But I've been using it for web dev tasks since it relaunched today, and it's worked fine without fallback. (On a firmware-customization project involving a ghidra MCP, it triggered and switched to Opus; that was sort of expected.)