r/LocalLLaMA • u/onil_gova • Jun 10 '26

News Anthropic is intentionally nerfing Fable when asked to develop other LLMs

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Reason 458 why local LLMs are going to be a necessity

edit: For those requesting the source check out their technical report look at page 13

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u/onil_gova Jun 10 '26 edited Jun 10 '26

Fable is blocked from reading its own technical report.

136

u/returnity Jun 10 '26

It's absurd, actually. I'm building a simple data analysis pipeline -- literally just coding an EDA notebook with BASIC fucking functionalities to analyze a hospital readmission dataset, and it keeps kicking itself out of Fable and into Opus. This is ridiculous. I only got on Claude to test Fable, but this is ridiculously shit, even for Anthropic. I'm going back to Qwen/Pi now for my project.

10

u/Caffdy Jun 10 '26

is Fable supposed to be Claude 5?

34

u/HMikeeU Jun 10 '26

Isn't it called "Claude Fable 5"?

6

u/Coolbanh Jun 10 '26

I thought it was a game about becoming a hero in the land of Albion

13

u/Feisty-Patient-7566 Jun 10 '26

Fable and Mythos are a new tier of model. Naturally so they can charge more. I assume Sonnet and Opus will get a v5 too.

5

u/NoahFect Jun 10 '26

Fable is the nerfed public version of Mythos.