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ray vs fiftyone

ray and fiftyone share 19 technologies: pyarrow, mcap, Hugging Face, werkzeug, React, pydata-sphinx-theme, sphinx-design, Plotly, ipywidgets, torch, transformers, TensorFlow, torchvision, markupsafe, myst-parser, docutils, jinja2, MUI, and @mui/icons-material. ray is written in Python and fiftyone in TypeScript.

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

Only in ray

In common

voxel51

fiftyone

Refine high-quality datasets and visual AI models

TypeScript11.3kRead on November 12, 2026, at commit 5b951a9What is fiftyone built with?

Only in fiftyone

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
ray1,566,356 lines written2,810 code files
fiftyone1,175,815 lines written3,488 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
fiftyone1.3% of its commits signed by AIWith Claude Code, CodeRabbit, Cursor, and GitHub Copilot
ActivityFrom GitHub and its history, on the day SeeRepo read it.
rayLast push November 13, 202632,468 commits44,282 stars
fiftyoneLast push November 12, 202627,029 commits11,299 stars
TestsThe files that test the code, and the share of code files a test imports.
ray2,208 test files9.4% of its code files have a test that imports them
fiftyone1,524 test files45% of its code files have a test that imports them

Frequently asked questions

Which is bigger, ray or fiftyone?
ray, with 1,566,356 lines written; fiftyone has 1,175,815.

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

Which has more GitHub stars, ray or fiftyone?
ray, with 44,282 stars; fiftyone has 11,299.

The proof: ray-project/ray on GitHub

Which has more tests, ray or fiftyone?
ray, with 2,208 test files; fiftyone has 1,524.

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

Which was updated more recently, ray or fiftyone?
ray: its last push was on November 13, 2026, and fiftyone's on November 12, 2026.

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

Which has more commits signed by AI, ray or fiftyone?
ray: an AI signed 3.7% of its commits, with Claude Code, Gemini CLI, GitHub Copilot, Cursor, and Codex; in fiftyone, 1.3%.

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

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