AITZ_EM

Android-In-The-Zoo (AitZ) benchmark for evaluating autonomous GUI agents on smartphones. Contains 18,643 screen-action pairs with chain-of-action-thought annotations spanning over 70 Android apps. Designed to connect perception (screen layouts and UI elements) with cognition (action decision-making) for natural language-triggered smartphone task completion.

Qwen2.5 VL 72B Instruct from Alibaba Cloud / Qwen Team currently leads the AITZ_EM leaderboard with a score of 0.832 across 3 evaluated AI models.

Paper
About this benchmark

What AITZ_EM measures

AITZ_EM is a multimodal benchmark that evaluates large language models on multimodal, reasoning, and agents tasks. LLM Stats tracks 3 models on this benchmark, with a maximum possible score of 1. Current average across reported models is 0.8, with the leader reaching 0.8.

Compare leaders on the best AI for multimodal, best AI for reasoning and best AI for agents leaderboards.

Publication

Paper
Android in the Zoo: Chain-of-Action-Thought for GUI Agents
Authors
Jiwen Zhang, Jihao Wu, Yihua Teng, Minghui Liao, and 4 others
Published

Abstract

Large language model (LLM) leads to a surge of autonomous GUI agents for smartphone, which completes a task triggered by natural language through predicting a sequence of actions of API. Even though the task highly relies on past actions and visual observations, existing studies typically consider little semantic information carried out by intermediate screenshots and screen operations. To address this, this work presents Chain-of-Action-Thought (dubbed CoAT), which takes the description of the previous actions, the current screen, and more importantly the action thinking of what actions should be performed and the outcomes led by the chosen action. We demonstrate that, in a zero-shot setting upon three off-the-shelf LMMs, CoAT significantly improves the action prediction compared to previous proposed context modeling. To further facilitate the research in this line, we construct a dataset Android-In-The-Zoo (AitZ), which contains 18,643 screen-action pairs together with chain-of-action-thought annotations. Experiments show that fine-tuning a 1B model (i.e. AUTO-UI-base) on our AitZ dataset achieves on-par performance with CogAgent-Chat-18B.

Alibaba Cloud / Qwen TeamQwen2.5 VL 72B Instruct leads with 83.2%, followed by Alibaba Cloud / Qwen TeamQwen2.5 VL 32B Instruct at 83.1% and Alibaba Cloud / Qwen TeamQwen2.5 VL 7B Instruct at 81.9%.

Progress Over Time

Interactive timeline showing model performance evolution on AITZ_EM

State-of-the-art frontier
Open
Proprietary

AITZ_EM Leaderboard

3 models
ContextCostLicense
1
Alibaba Cloud / Qwen Team
Alibaba Cloud / Qwen Team
72B
2
Alibaba Cloud / Qwen Team
Alibaba Cloud / Qwen Team
34B
3
Alibaba Cloud / Qwen Team
Alibaba Cloud / Qwen Team
8B
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FAQ

Common questions about AITZ_EM.

What is the AITZ_EM benchmark?

Android-In-The-Zoo (AitZ) benchmark for evaluating autonomous GUI agents on smartphones. Contains 18,643 screen-action pairs with chain-of-action-thought annotations spanning over 70 Android apps. Designed to connect perception (screen layouts and UI elements) with cognition (action decision-making) for natural language-triggered smartphone task completion.

What is the AITZ_EM leaderboard?

The AITZ_EM leaderboard ranks 3 AI models based on their performance on this benchmark. Currently, Qwen2.5 VL 72B Instruct by Alibaba Cloud / Qwen Team leads with a score of 0.832. The average score across all models is 0.827.

What is the highest AITZ_EM score?

The highest AITZ_EM score is 0.832, achieved by Qwen2.5 VL 72B Instruct from Alibaba Cloud / Qwen Team.

How many models are evaluated on AITZ_EM?

3 models have been evaluated on the AITZ_EM benchmark, with 0 verified results and 3 self-reported results.

Where can I find the AITZ_EM paper?

The AITZ_EM paper is available at https://arxiv.org/abs/2403.02713. The paper details the methodology, dataset construction, and evaluation criteria.

What categories does AITZ_EM cover?

AITZ_EM is categorized under multimodal, reasoning, and agents. The benchmark evaluates multimodal models.

What is the best open-source model on AITZ_EM?

Qwen2.5 VL 72B Instruct by Alibaba Cloud / Qwen Team is the top-ranked open-source model on AITZ_EM, with a score of 0.832 (rank #1).

How recent are the AITZ_EM leaderboard results?

The AITZ_EM leaderboard was last updated in June 2026 and currently includes 3 evaluated models.

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