DiffCap-Bench - Composition: leaderboard

Metric: Macro-averaged F1* (%) on composition differences, including cropping: harmonic mean of recall* (share of key differences described) and precision* (share of described differences that are correct) on the 1,075 image pairs of DiffCap-Bench (6,713 human-verified difference items), one fixed captioning prompt, open models at temperature 0.1 and proprietary models at their defaults, a Gemini 2.5 Pro judge matching each described difference against the key difference list; higher is better. Source: arxiv.org. Saturation forecast: Around January 2027. 16 models tracked.

Top models

#ModelScore
1GPT-5.291.5
2Gemini 3 Pro88
3Kimi K2.5 (Non-reasoning)77.5
4Kimi K2.5 (Thinking)77.4
5Step3 VL 10B77.2
6Grok 4.2075.8
7Qwen 3 VL 32B Instruct72.3
8Qwen 3 VL 8B Instruct69.2
9Qwen 3 VL 32B (Thinking)69.2
10Qwen 3 VL 8B (Thinking)66.7

Interactive version: theaggregate.ai/benchmark?slug=diffcap-bench-composition · How It Works · Data refreshed daily, snapshot 2026-10-07.