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ray vs ml-agents

ray and ml-agents share 4 technologies: h5py, gymnasium, torch, and pillow. Both are written in Python.

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What they share and what sets them apart

ray-project

ray

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

Python44.3kRead on November 10, 2026, at commit c99c603What is ray built with?

Only in ray

In common

Unity-Technologies

ml-agents

The Unity Machine Learning Agents Toolkit (ML-Agents) is an open-source project that enables games and simulations to serve as environments for training intelligent agents using deep reinforcement learning and imitation learning.

Python19.8kRead on November 5, 2026, at commit 4649106What is ml-agents built with?

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
ray1,551,053 lines written2,797 code files
ml-agents81,989 lines written300 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
ray3.7% of its commits signed by AIWith Claude Code, Gemini CLI, GitHub Copilot, Cursor, and Codex
ml-agents0.1% of its commits signed by AIWith Claude Code
ActivityFrom GitHub and its history, on the day SeeRepo read it.
rayLast push November 10, 202632,424 commits44,251 stars
ml-agentsLast push October 30, 20263,177 commits19,822 stars
TestsThe files that test the code, and the share of code files a test imports.
ray2,192 test files9.5% of its code files have a test that imports them
ml-agents160 test files55.3% of its code files have a test that imports them

Frequently asked questions

Which is bigger, ray or ml-agents?
ray, with 1,551,053 lines written; ml-agents has 81,989.

The proof: ray-project/ray's code at commit c99c603

Which has more GitHub stars, ray or ml-agents?
ray, with 44,251 stars; ml-agents has 19,822.

The proof: ray-project/ray on GitHub

Which has more tests, ray or ml-agents?
ray, with 2,192 test files; ml-agents has 160.

The proof: ray-project/ray's code at commit c99c603

Which was updated more recently, ray or ml-agents?
ray: its last push was on November 10, 2026, and ml-agents's on October 30, 2026.

The proof: ray-project/ray's commits on GitHub

Which has more commits signed by AI, ray or ml-agents?
ray: an AI signed 3.7% of its commits, with Claude Code, Gemini CLI, GitHub Copilot, Cursor, and Codex; in ml-agents, 0.1%.

The proof: the commits each tool signed in ray-project/ray

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