Source: https://seerepo.com/compare/langflow-ai/langflow/vs/verl-project/verl
Markdown source: https://seerepo.com/compare/langflow-ai/langflow/vs/verl-project/verl.md
Description: langflow and verl share 3 technologies: FastAPI, pyarrow, and uvicorn. Both are written in Python.

# langflow vs verl

langflow and verl share 3 technologies: FastAPI, pyarrow, and uvicorn. Both are written in Python.

- [langflow-ai/langflow](https://seerepo.com/r/langflow-ai/langflow): Langflow is a powerful tool for building and deploying AI-powered agents and workflows.
- [verl-project/verl](https://seerepo.com/r/verl-project/verl): verl/HybridFlow: A Flexible and Efficient RL Post-Training Framework 

## What they share and what sets them apart

- In common: FastAPI, pyarrow, uvicorn
- Only in langflow: oracledb, Redis, Google, OpenAI, AIOHTTP, Vite, React, react-router-dom, Rich, SQLAlchemy, cryptography, pyjwt, bcrypt, google-auth-oauthlib, firecrawl-py, LangChain, langchain-classic, MCP, exa-py, pillow, defusedxml, pypdf, markitdown, Pydantic, jsonschema, msgspec, validators, psutil, loguru, boto3, Tailwind CSS, class-variance-authority, tailwind-merge, xyflow, Radix UI, ag-grid-community, Framer, react-hotkeys-hook, use-stick-to-bottom, react-syntax-highlighter, ace-builds, Headless UI, cmdk, elkjs, react-day-picker, react-error-boundary, react-sortablejs, reactflow, Lucide, react-icons, @radix-ui/react-icons, react-markdown, remark-gfm, dompurify, rehype-sanitize, rehype-raw
- Only in verl: transformers, accelerate, datasets, einops, av, pylatexenc

## Side by side

| | langflow | verl |
|---|---|---|
| Size | 1,446,517 lines written, 3,937 code files | 187,062 lines written, 359 code files |
| Who writes it | 1.5% of its commits signed by AI. With Claude Code, CodeRabbit, GitHub Copilot, Cursor, Codex, and Warp | 9.2% of its commits signed by AI. With Gemini CLI, Claude Code, Codex, Cursor, Devin, GitHub Copilot, OpenHands, and CodeRabbit |
| Activity | Last push November 4, 2026, 17,600 commits, 156,316 stars | Last push November 4, 2026, 3,182 commits, 24,128 stars |
| Tests | 3,083 test files. 35.1% of its code files have a test that imports them | 304 test files. 54.9% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, langflow or verl?

langflow, with 1,446,517 lines written; verl has 187,062.

The proof: [langflow-ai/langflow's code at commit 60999cc](https://github.com/langflow-ai/langflow/tree/60999cc9a7350e44dde3ef641baae864e10861f0)

### Which has more GitHub stars, langflow or verl?

langflow, with 156,316 stars; verl has 24,128.

The proof: [langflow-ai/langflow on GitHub](https://github.com/langflow-ai/langflow)

### Which has more tests, langflow or verl?

langflow, with 3,083 test files; verl has 304.

The proof: [langflow-ai/langflow's code at commit 60999cc](https://github.com/langflow-ai/langflow/tree/60999cc9a7350e44dde3ef641baae864e10861f0)

### Which was updated more recently, langflow or verl?

Both got their last push on November 4, 2026.

The proof: [verl-project/verl's commits on GitHub](https://github.com/verl-project/verl/commits)

### Which has more commits signed by AI, langflow or verl?

verl: an AI signed 9.2% of its commits, with Gemini CLI, Claude Code, Codex, Cursor, Devin, GitHub Copilot, OpenHands, and CodeRabbit; in langflow, 1.5%.

The proof: [the commits each tool signed in verl-project/verl](https://seerepo.com/r/verl-project/verl/ai)

## Sources

- langflow-ai/langflow: Read on November 4, 2026, at commit 60999cc (https://github.com/langflow-ai/langflow/tree/60999cc9a7350e44dde3ef641baae864e10861f0)
- verl-project/verl: Read on November 4, 2026, at commit 7454326 (https://github.com/verl-project/verl/tree/745432653d15af14954af1e055c8aeed72afa064)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.