opus-model

#opus-model

@RealYDT: Holy shit, brothers, I suddenly have a bit of a conspiracy theory, but it makes more sense the more I think about it: Maybe Opus 4.6 was the last generation of Opus that was actually used extensively by human employees internally at Anthropic. After that, the internal focus shifted to Mythos. Then, the training and RL... for 4.7, 4.8, and 5 were increasingly done by a stronger "AI teacher" like Mythos to spot errors, score, and correct.

X AI KOLs Following ↗ · 2026-08-20 Cached

The user speculates that starting from Opus 4.6, Anthropic internally shifted to using the Mythos model, leading to subsequent Opus models being trained and behaving more cautiously and AI-like.

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#opus-model

@QuinnyPig: Fable 5 is the most expensive Opus model router ever constructed.

X AI KOLs Following ↗ · 2026-07-01

Fable 5 is a model router for Opus models, noted as the most expensive ever constructed.

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opus-model

@QuinnyPig: Fable 5 is the most expensive Opus model router ever constructed.

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