VLM-SubtleBench - Difference Captioning: leaderboard

Metric: Difference-captioning accuracy (%): share of generated captions of the difference between two similar images that a GPT-4o judge labels as matching the reference caption; higher is better. Source: arxiv.org. Saturation forecast: Around August 2027. 10 models tracked.

Top models

#ModelScoreOverall rank
1GPT-5 (Thinking)43#91 (GPT-5)
2O338.1#121
3GPT-5 Chat37.2#233
4Gemini 2.5 Pro29.4#145
5Gemini 2.5 Flash25.9#237
6GPT-4o25.2#333
7Claude Sonnet 424.8#194
8Qwen 2.5 VL 72B Instruct24.3#364
9Qwen 2.5 VL 32B Instruct22.7#443
10Qwen 2.5 VL 7B Instruct12.7#643

No result here: #3 Claude Opus 5.5, #5 GPT-6 Astra, #8 Claude Fable 5.1.

Interactive version: theaggregate.ai/benchmark?slug=vlm-subtlebench-difference-captioning · How It Works · Data refreshed daily, snapshot 2026-10-11.