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langflow vs ray

langflow and ray share 3 technologies: FastAPI, Redis, and Google. Both are written in Python.

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What they share and what sets them apart

langflow-ai

langflow

Langflow is a powerful tool for building and deploying AI-powered agents and workflows.

Python156.1kRead on October 29, 2026, at commit aeb10d9What is langflow built with?
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.

Python44.2kRead on October 31, 2026, at commit 45c4123What is ray built with?

In common

Only in langflow

Only in ray

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
langflow1,438,179 lines written4,003 code files
ray1,514,135 lines written2,949 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.
langflow1.5% of its commits signed by AIWith Claude Code, CodeRabbit, GitHub Copilot, Cursor, Codex, and Warp
ray3.3% 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.
langflowLast push October 29, 202617,563 commits156,138 stars
rayLast push October 31, 202632,244 commits44,168 stars
TestsThe files that test the code, and the share of code files a test imports.
langflow3,061 test files34.4% of its code files have a test that imports them
ray2,145 test files9.1% of its code files have a test that imports them

Frequently asked questions

Which is bigger, langflow or ray?
ray, with 1,514,135 lines written in 2,949 code files; langflow has 1,438,179 in 4,003.

The proof: ray-project/ray's code at commit 45c4123

Which has more GitHub stars, langflow or ray?
langflow, with 156,138 stars; ray has 44,168.

The proof: langflow-ai/langflow on GitHub

Which has more tests, langflow or ray?
langflow, with 3,061 test files; ray has 2,145.

The proof: langflow-ai/langflow's code at commit aeb10d9

Which was updated more recently, langflow or ray?
ray: its last push was on October 31, 2026, and langflow's on October 29, 2026.

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

Which has more commits signed by AI, langflow or ray?
ray: an AI signed 3.3% of its commits, with Claude Code, Gemini CLI, GitHub Copilot, Cursor, and Codex; in langflow, 1.5%.

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

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