CountBench

CountBench evaluates object counting capabilities in visual understanding.

Qwen3.5-27B from Alibaba Cloud / Qwen Team currently leads the CountBench leaderboard with a score of 0.978 across 6 evaluated AI models.

About this benchmark

What CountBench measures

CountBench is a image benchmark that evaluates large language models on reasoning, spatial reasoning, and vision tasks. LLM Stats tracks 6 models on this benchmark, with a maximum possible score of 100. Current average across reported models is 1.0, with the leader reaching 1.0.

Compare leaders on the best AI for reasoning, best AI for spatial reasoning and best AI for vision leaderboards.

Alibaba Cloud / Qwen TeamQwen3.5-27B leads with 1.0%, followed by Alibaba Cloud / Qwen TeamQwen3.5-35B-A3B at 1.0% and Alibaba Cloud / Qwen TeamQwen3.6-27B at 1.0%.

Progress Over Time

Interactive timeline showing model performance evolution on CountBench

State-of-the-art frontier
Open
Proprietary

CountBench Leaderboard

6 models
ContextCostLicense
1
Alibaba Cloud / Qwen Team
Alibaba Cloud / Qwen Team
27B262K$0.30 / $2.40
1
Alibaba Cloud / Qwen Team
Alibaba Cloud / Qwen Team
35B262K$0.25 / $2.00
1
Alibaba Cloud / Qwen Team
Alibaba Cloud / Qwen Team
28B262K$0.60 / $3.60
4
Alibaba Cloud / Qwen Team
Alibaba Cloud / Qwen Team
1.0M$0.50 / $3.00
5
Alibaba Cloud / Qwen Team
Alibaba Cloud / Qwen Team
122B262K$0.40 / $3.20
6
Alibaba Cloud / Qwen Team
Alibaba Cloud / Qwen Team
236B
Notice missing or incorrect data?

FAQ

Common questions about CountBench.

What is the CountBench benchmark?

CountBench evaluates object counting capabilities in visual understanding.

What is the CountBench leaderboard?

The CountBench leaderboard ranks 6 AI models based on their performance on this benchmark. Currently, Qwen3.5-27B by Alibaba Cloud / Qwen Team leads with a score of 0.978. The average score across all models is 0.970.

What is the highest CountBench score?

The highest CountBench score is 0.978, achieved by Qwen3.5-27B from Alibaba Cloud / Qwen Team.

How many models are evaluated on CountBench?

6 models have been evaluated on the CountBench benchmark, with 0 verified results and 6 self-reported results.

What categories does CountBench cover?

CountBench is categorized under reasoning, spatial reasoning, and vision. The benchmark evaluates image models.

What is the best open-source model on CountBench?

Qwen3.5-27B by Alibaba Cloud / Qwen Team is the top-ranked open-source model on CountBench, with a score of 0.978 (rank #1).

Which model offers the best value on CountBench?

Among models scoring within 10% of the leader, Qwen3.5-35B-A3B from Alibaba Cloud / Qwen Team is the cheapest, at $0.25 per million input tokens with a score of 0.978.

How recent are the CountBench leaderboard results?

The CountBench leaderboard was last updated in June 2026 and currently includes 6 evaluated models.

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