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Best Chart Question Answering Models

Compare the best 87 chart question answering models and try them on your own images, free in the Roboflow Playground. 29 are open-weight, so you can self-host them for free under their licenses.

87 models · 29 open-weight · 87 free to try · prices synced Oct 26, 2026

We haven't benchmarked chart question answering yet; scores and rankings appear on this site only where we've measured them. Until then, compare the models below, and for fixed categories in production expect a model fine-tuned on your own data to win.

Open-Source Chart Question Answering Models

29 models with downloadable weights you can self-host under their licenses (Custom, MIT, and Apache 2.0). All run live in the Playground through hosted APIs, so self-hosting is optional.

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Mistral
1.05T total, 49B activeCustomOct 2026
Try
309B total, 15B activeMITSep 2026
Try
1.02T total, 42B activeMITSep 2026
Try
320B total, 18B activeMITAug 2026
Try
Qwen
27.78BApache 2.0Aug 2026
Try
29.6BApache 2.0Aug 2026
Try
MoonshotAI
Kimi K3Moonshot AI
2.8TModified MITJul 2026
Try
Qwen
27BApache 2.0Apr 2026

Chart Question Answering Models via API

58 proprietary models where the weights aren't downloadable: access is through each provider's API and billed by them. Try all of them free in the Playground.

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GoogleNEW
$2.00$10.001MOct 2026
Try
Meta
$4.00$20.001.0MOct 2026
Try
Anthropic
$0.10$0.501MOct 2026
Try
OpenAI
$2.00$10.001.1MSep 2026
Try
Anthropic
$2.00$10.001MSep 2026
Try
Anthropic
$4.00$20.001MSep 2026
Try
OpenAI
$0.10$0.501.1MSep 2026
Try
OpenAI
GPT-6 SolOpenAI
$2.00$10.001.1MSep 2026
Try

How to Choose a Chart Question Answering Model

Charts encode data in axes, scales, and marks, so answering questions about them means inverting the visualization and then reasoning over numbers, which is exactly where models still make confident mistakes.

The strongest general VLMs read common chart types well: values, comparisons, trends. Reliability drops on dense, small-text, or unconventional charts, and errors are silent, so spot-check against source data before automating anything that matters.

If the underlying table exists, querying it directly (or having a model extract the table first, then compute) beats asking questions of the rendered pixels. Treat chart QA as the fallback for when the image is truly all you have: screenshots, PDFs, legacy reports.

The bottom line: Use a frontier VLM for chart questions, verify on your own charts, and whenever the source data is available, query the data instead of the picture.

Frequently Asked Questions About Chart Question Answering Models

Yes. 29 of the 87 chart question answering models here are open-weight (for example Mistral Large 4, MiMo V2.6 Flash, and MiMo V2.6 Pro), free to self-host under their licenses (Custom, MIT, and Apache 2.0).

Yes. You can run all 87 in the Roboflow Playground for free. Upload an image and compare the models' output side by side, no setup required.

This page lists all 87 chart question answering models in the Roboflow Playground catalog: 29 open-weight models you can self-host and 58 proprietary models accessed through provider APIs; all of them run live in the Roboflow Playground on your own images. Compare licenses, parameters, API prices, and release dates side by side, or open any model page for full details.