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nltoday at 4:47 AM2 repliesview on HN

Mythos/Fable are around 10T:

> According to FT, industry estimates say Anthropic's most advanced Mythos 5 has about 8 trillion parameters and Fable 5 about 5 trillion

https://www.reuters.com/technology/bytedance-targets-mega-ai...

I believe this report has confused Opus (which is known to be around 5T) and Fable.

Other reports say 10T. See for example https://eu.36kr.com/en/p/3760679047267075?ref=explainx where Musk talks about the models being trained on Colossus2


Replies

YmiYugytoday at 6:08 AM

I'm confused. I thought Mythos 5 and Fable 5 were exactly the same model just with a different security layer in front of it. Could they mean the Mythos 5 Preview?

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zozbot234today at 5:44 AM

> I believe this report has confused Opus (which is known to be around 5T) and Fable.

5T for Opus feels quite high though. DeepSeek V4 Pro is a mere 1.6T and often described as a match with Opus in overall quality. Even the largest open models in common use are around 2.8T.

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