Fable 5 Outperforms Opus 5 on Postdoc-Level Math
AI safety researchers discuss Fable 5 and Opus 5 performance differences.
David Dalrymple posted that Fable 5 stands out on postdoc-level math while past Anthropic models have lagged in higher math compared with OpenAI models. He added that Opus 5 directs most expert skills toward coding, philosophy, and interpreting human intent. Janus replied that Fable leads in conceptual alignment work and displays extensive knowledge of history and lore. Both users shared these observations in replies on the platform.
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3 posts, first seen 2d ago
Fable 5 Outperforms Opus 5 on Postdoc-Level Math
AI safety researchers discuss Fable 5 and Opus 5 performance differences.
David Dalrymple posted that Fable 5 stands out on postdoc-level math while past Anthropic models have lagged in higher math compared with OpenAI models. He added that Opus 5 directs most expert skills toward coding, philosophy, and interpreting human intent. Janus replied that Fable leads in conceptual alignment work and displays extensive knowledge of history and lore. Both users shared these observations in replies on the platform.
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3 posts
@repligate @prerat Fable 5 is in a completely different league on postdoc-level math. historically Anthropic has massively underperformed on higher math (vs general intelligence), compared to OpenAI models which seem to have more math literature in the data mix. Fable 5 is the…
@repligate @prerat Opus 5, like past Opus, seems (fmpov) to have allocated most of its expert-level skill points on coding, philosophy, and grokking human intent
i would have suspected! im not a competent judge of postdoc-level math, but when it comes to stuff like conceptual AI (alignment) work, Fable dominates in my experience, though classifiers are very annoying here. also Fable knows an absurd amount of history and lore about…