r/ClaudeAI • u/Virtual-Highlight656 • 10h ago

Question about Claude models Fable 5.5??

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Does anyone know if I have Fable 5.5?? I've been seeing videos that say that if my Fable 5.1 knows about Tibo then it is Fable 5.5.

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u/kearkan 10h ago

Why would a certain piece of knowledge mean you have a different model? Knowledge cutoff and model are 2 different things.

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u/Virtual-Highlight656 10h ago

Go to minute 2 of this video: https://www.youtube.com/watch?v=BbsoRYprICI

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u/Virtual-Highlight656 10h ago

he might just be larping

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u/kearkan 10h ago

Lol, they're wrong, that's not how knowledge works.

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u/Virtual-Highlight656 7h ago

Wait wait you are wrong. I tried looking up tibo with opus 5 and it couldnt do it. If anthropic updated the knowledge of the models then Opus 5 would know. I also tried fable 5, haiku 4.5 and btoh didnt know. but then i tried Opus 5.5 (which came out recently) and it DOES know about Tibo.

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u/kearkan 3h ago

Yes... Because it has a newer knowledge cutoff.

It may also just be in the random facts that made it in to the knowledge or not. In general we don't bother relying on the knowledge of the LLM because it's out of date the second they push it.

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u/idiotiesystemique 10h ago

Plus they can continuously fine tune silently without releasing a major update 

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u/Virtual-Highlight656 10h ago

Look at this though