Which is more popular, ART or Ray?

Ray has more GitHub stars (43,954 vs 10,784).

Which is more actively developed, ART or Ray?

Ray had more commits in the last 90 days (1,006 vs 208).

Should I use ART or Ray?

Compare their capabilities, limitations and "best for" notes above. Both are open source, so trying each on a small task is the fastest way to decide.

ART vs Ray

Side-by-side comparison of two AI agent tools

ARTopen-source

Agent Reinforcement Trainer: train multi-step agents for real-world tasks using GRPO. Give your agents on-the-job training. Reinforcement learning for Qwen3.6,

Rayopen-source

Ray is an AI compute engine. Ray consists of a core distributed runtime and a set of AI Libraries for accelerating ML workloads.

Metrics

	ART	Ray
Stars	10.8k	44.0k
Star velocity /mo	898.6666666666666	332.40641711229944
Commits (90d)	208	1.0k
Releases (6m)	1	6
Overall score	0.6738426380820626	0.7147619540885801

Pros

+统一的分布式框架，将数据处理、训练、调优和服务集成在单一平台中，减少了技术栈复杂性和学习成本
+平台无关设计，支持从本地开发到云端生产的无缝部署，兼容所有主流云提供商和Kubernetes环境
+强大的生态系统，拥有41000+GitHub星数和活跃的社区，提供丰富的集成和扩展能力

Cons

-分布式系统的学习曲线较陡峭，需要理解分布式计算概念和Ray特有的编程模式
-对于简单的单机任务可能存在过度工程化的问题，引入了不必要的复杂性
-资源消耗较高，运行分布式集群需要相当的内存和计算资源投入

Use Cases

•大规模机器学习训练：利用Train库在多GPU/多节点环境下进行深度学习模型的分布式训练，显著缩短训练时间
•超参数优化：使用Tune库对机器学习模型进行大规模并行的超参数搜索和调优，找到最优模型配置
•强化学习应用：通过RLlib构建和训练复杂的强化学习算法，适用于游戏AI、机器人控制和自动化决策系统

View ART Details View Ray Details

FAQ

Which is more popular, ART or Ray?: Ray has more GitHub stars (43,954 vs 10,784).
Which is more actively developed, ART or Ray?: Ray had more commits in the last 90 days (1,006 vs 208).
Should I use ART or Ray?: Compare their capabilities, limitations and "best for" notes above. Both are open source, so trying each on a small task is the fastest way to decide.