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scalene vs ray

scalene and ray share 5 technologies: Rich, lxml, jinja2, Pydantic, and psutil. Both are written in Python.

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What they share and what sets them apart

plasma-umass

scalene

Scalene: a high-performance, high-precision CPU, GPU, and memory profiler for Python with AI-powered optimization proposals

Python13.6kRead on November 9, 2026, at commit ba0896dWhat is scalene built with?

Only in scalene

In common

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 13, 2026, at commit de4c576What is ray built with?

Only in ray

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
scalene60,118 lines written87 code files
ray1,566,356 lines written2,810 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.
scalene4% of its commits signed by AIWith Claude Code and GitHub Copilot
ray3.7% of its commits signed by AIWith Claude Code, Gemini CLI, GitHub Copilot, Cursor, and Codex
ActivityFrom GitHub and its history, on the day SeeRepo read it.
scaleneLast push November 9, 20263,270 commits13,555 stars
rayLast push November 13, 202632,468 commits44,282 stars
TestsThe files that test the code, and the share of code files a test imports.
scalene237 test files50.6% of its code files have a test that imports them
ray2,208 test files9.4% of its code files have a test that imports them

Frequently asked questions

Which is bigger, scalene or ray?
ray, with 1,566,356 lines written; scalene has 60,118.

The proof: ray-project/ray's code at commit de4c576

Which has more GitHub stars, scalene or ray?
ray, with 44,282 stars; scalene has 13,555.

The proof: ray-project/ray on GitHub

Which has more tests, scalene or ray?
ray, with 2,208 test files; scalene has 237.

The proof: ray-project/ray's code at commit de4c576

Which was updated more recently, scalene or ray?
ray: its last push was on November 13, 2026, and scalene's on November 9, 2026.

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

Which has more commits signed by AI, scalene or ray?
scalene: an AI signed 4% of its commits, with Claude Code and GitHub Copilot; in ray, 3.7%.

The proof: the commits each tool signed in plasma-umass/scalene

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