Claude Fable
Lineage
Versions without a link: below the threshold for a profile (3 public measurements, or a place in the top 10 of a benchmark).
Claude Fable versions, general intelligence and release date
Epoch AI ECI index and its 95% interval; 3 versions released in 2026 and measured by the ECI index, the most recent highlighted; the rank of each version in each benchmark, in the "Table" tab
Dot: the index measured, at the release dateLine: the 95% interval
Sources: Epoch AI, "Capabilities & benchmarking"; LMArena. CC BY 4.0 licence.
Rank among models released in 2026 and measured by the benchmark. Sources: Epoch AI and LMArena (CC BY 4.0), data as of 10 November 2026. An underlined name links to the version profile.
Continue in the ranking
The full ranking →CompanyAnthropic12models measuredIts assistant, its models, its governance and the electricity of its data centres.The entry →ModelAnthropicClaude Fable 5.21stout of 71 on general intelligenceThe best-ranked Claude Fable version on general intelligence.The entry →The hub newsletter
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