Chartography Benchmark: Zoom Tool Boosts Claude's Chart Accuracy to 44%

echen · x · 2026-07-28

SurgeAI introduced the Chartography benchmark, designed to evaluate how well models read and interpret professional charts.

In a test of 100 questions based on dense real-world charts, both Fable 5 and Claude 3.5 Sonnet showed significant improvement when equipped with a zoom tool. Fable 5's accuracy jumped from 29% to 73%, while Sonnet's increased from 13% to 44%.

Related event: Claude's Zoom Tool Significantly Boosts Chart Recognition Accuracy(3 posts)→

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