Benchmark · 2026

POLYCHARTQA: multilingual chart QA

A multilingual chart-question-answering benchmark distinct from the similarly named multi-chart scientific-figure dataset.

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Languages and chart reading

Answer 26,151 questions over 22,606 charts across ten languages and sixteen chart types.

Type-aware relaxed accuracy, OCR and value diagnostics, cross-lingual conditions, and fine-tuning ablations.

Shows uneven transfer from English and identifies OCR and visual-language alignment as substantial parts of the gap.

Translated and rerendered English source material does not represent global practice, cultural chart conventions, or ordinary non-English work.

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