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Anthropic

Claude Fable 5 Max Effort

new

Rank 1 of 45 · release 2026-06-25 · $10 in / $50 out per MTok

Global average

83.0

first appearance

Signal breakdown

Category scores

Reasoning

89.7

Coding

86.0

Agentic Coding

62.2

Mathematics

96.0

Data Analysis

80.5

Language

90.7

Instruction Following

75.8

Trend

Score history

8083852026-06-25

One release on record — the line starts next release.

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Detail

Per-task scores

TaskCategoryScore
zebra_puzzleReasoning100.0
connectionsLanguage99.3
AMPS_HardMathematics99.0
integrals_with_gameMathematics97.0
spatialReasoning96.0
math_compMathematics95.1
tablereformatData Analysis94.1
typosLanguage94.0
olympiadMathematics92.8
code_generationCoding91.5
consecutive_eventsData Analysis91.4
theory_of_mindReasoning84.6
summarizeInstruction Following81.7
code_completionCoding80.4
plot_unscramblingLanguage78.7
logic_with_navigationReasoning78.0
paraphraseInstruction Following77.7
simplifyInstruction Following72.0
story_generationInstruction Following71.7
javascriptAgentic Coding68.2
pythonAgentic Coding65.0
tablejoinData Analysis56.1
typescriptAgentic Coding53.3