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hydra vs ray

hydra and ray share 8 technologies: AIOHTTP, Ray, ax-platform, torch, nevergrad, Optuna, colorlog, and boto3. Both are written in Python.

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What they share and what sets them apart

hydra-ecosystem

hydra

Hydra is a framework for elegantly configuring complex applications

Python10.7kRead on November 13, 2026, at commit fdd1cbbWhat is hydra built with?

Only in hydra

  • rq
  • submitit

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.
hydra71,178 lines written121 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.
hydra0.4% of its commits signed by AIWith GitHub Copilot, Claude Code, and Cursor
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.
hydraLast push November 12, 20262,248 commits10,744 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.
hydra250 test files60.3% 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, hydra or ray?
ray, with 1,566,356 lines written; hydra has 71,178.

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

Which has more GitHub stars, hydra or ray?
ray, with 44,282 stars; hydra has 10,744.

The proof: ray-project/ray on GitHub

Which has more tests, hydra or ray?
ray, with 2,208 test files; hydra has 250.

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

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

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

Which has more commits signed by AI, hydra or ray?
ray: an AI signed 3.7% of its commits, with Claude Code, Gemini CLI, GitHub Copilot, Cursor, and Codex; in hydra, 0.4%.

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

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