Best Chart Question Answering Models

Chart question answering is the task of answering questions about charts and plots: reading values, comparing series, and describing trends. Unlike natural photos, charts encode data in axes, scales, legends, and geometric marks, so a model must effectively invert the visualization back into numbers and then reason over them, often requiring arithmetic. Benchmarks like ChartQA score exact answers, and dense or cluttered charts remain a known weak spot even for frontier models. It is used to automate business intelligence review, audit report figures, and make dashboards queryable in plain language. This page lists 62 chart question answering models, including 23 open-weight options you can self-host; all of them run live in the Playground so you can test them on your own images.

It depends on your task and constraints. For fixed categories in production, a model fine-tuned on your own data typically beats any general-purpose model. Compare the chart question answering models on this page and try them on your own image to see which fits.

Yes. 23 of the 62 chart question answering models here are open-weight (for example Kimi K3, Qwen3.6 27B, and Qwen3.6 35B A3B), free to self-host under their licenses (Modified MIT, Apache 2.0, and MIT).

Yes. You can run all 62 in the Roboflow Playground for free. Upload an image and compare the models' output side by side, no setup required.