ChartREG++ - Box Grounding (ChartMimic Charts): leaderboard
Chart referring-expression grounding on the ChartMimic half of ChartREG++ (Niu et al., 2026), charts drawn from scientific papers: the model must draw a bounding box around every chart element that an expression refers to through textual, data or visual clues. Macro F1 in percent after one-to-one Hungarian matching at an IoU of at least 0.5; zero-shot, higher is better.
Metric: Macro F1 (%; predicted boxes matched one-to-one to the referred chart elements by Hungarian matching at IoU >= 0.5; ChartMimic half of ChartREG++; zero-shot, greedy). Source: arxiv.org. Saturation forecast: Around October 2027. 5 models tracked.
Top models
| # | Model | Score | Overall rank |
|---|---|---|---|
| 1 | Gemini 3 Pro | 29.8 | #135 |
| 2 | GPT-5.2 | 23 | #172 |
No result here: #1 Claude Fable 5.2, #2 Gemini 4 Carbon, #5 Claude Opus 5.5.
Interactive version: theaggregate.ai/benchmark?slug=chartreg-plus-plus-box-grounding-chartmimic-charts · How It Works · Data refreshed daily, snapshot 2026-11-12.