VCIFBench - Format: leaderboard

Metric: Constraint pass rate (%) on format constraints (serialization, length, fixed patterns); higher is better. Source: arxiv.org. Saturation forecast: Estimated already saturated. 10 models tracked.

Top models

#ModelScore
1GPT-5.492.49
2Gemini 3 Pro91.39
3Gemini 3 Flash89.36
4GLM-4.1V-9B (Thinking)81.38
5MiniCPM-o-4.579.81
6InternVL3.5-8B47.1

Interactive version: theaggregate.ai/benchmark?slug=vcifbench-format · How It Works · Data refreshed daily, snapshot 2026-09-29.