Source: https://seerepo.com/compare/langflow-ai/langflow/vs/unclecode/crawl4ai
Markdown source: https://seerepo.com/compare/langflow-ai/langflow/vs/unclecode/crawl4ai.md
Description: langflow and crawl4ai share 11 technologies: FastAPI, Redis, uvicorn, AIOHTTP, Rich, pyjwt, MCP, pillow, pypdf, Pydantic, and psutil. Both are written in Python.

# langflow vs crawl4ai

langflow and crawl4ai share 11 technologies: FastAPI, Redis, uvicorn, AIOHTTP, Rich, pyjwt, MCP, pillow, pypdf, Pydantic, and psutil. 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.
- [unclecode/crawl4ai](https://seerepo.com/r/unclecode/crawl4ai): Official Crawl4AI Cloud: a hosted web scraping, extraction, and search API for AI agents. Free API key, 1,000 credits a month, no card. Fully open source: this repo is the Apache-2.0 crawler that powers it, and you can self-host it.

## What they share and what sets them apart

- In common: FastAPI, Redis, uvicorn, AIOHTTP, Rich, pyjwt, MCP, pillow, pypdf, Pydantic, psutil
- Only in langflow: pyarrow, oracledb, Google, OpenAI, Vite, React, react-router-dom, SQLAlchemy, cryptography, bcrypt, google-auth-oauthlib, firecrawl-py, LangChain, langchain-classic, exa-py, defusedxml, markitdown, jsonschema, msgspec, validators, 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 crawl4ai: aiosqlite, SQLite, anyio, rank-bm25, lxml, beautifulsoup4, email-validator, Gunicorn, prometheus-fastapi-instrumentator

## Side by side

| | langflow | crawl4ai |
|---|---|---|
| Size | 1,446,517 lines written, 3,937 code files | 176,861 lines written, 105 code files |
| Who writes it | 1.5% of its commits signed by AI. With Claude Code, CodeRabbit, GitHub Copilot, Cursor, Codex, and Warp | 4.4% of its commits signed by AI. With Claude Code, Factory, Cursor, CodeRabbit, and Devin |
| Activity | Last push November 4, 2026, 17,600 commits, 156,316 stars | Last push November 4, 2026, 1,446 commits, 86,895 stars |
| Tests | 3,083 test files. 35.1% of its code files have a test that imports them | 286 test files. 56.2% 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 crawl4ai?

langflow, with 1,446,517 lines written; crawl4ai has 176,861.

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 crawl4ai?

langflow, with 156,316 stars; crawl4ai has 86,895.

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

### Which has more tests, langflow or crawl4ai?

langflow, with 3,083 test files; crawl4ai has 286.

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 crawl4ai?

Both got their last push on November 4, 2026.

The proof: [unclecode/crawl4ai's commits on GitHub](https://github.com/unclecode/crawl4ai/commits)

### Which has more commits signed by AI, langflow or crawl4ai?

crawl4ai: an AI signed 4.4% of its commits, with Claude Code, Factory, Cursor, CodeRabbit, and Devin; in langflow, 1.5%.

The proof: [the commits each tool signed in unclecode/crawl4ai](https://seerepo.com/r/unclecode/crawl4ai/ai)

## Sources

- langflow-ai/langflow: Read on November 4, 2026, at commit 60999cc (https://github.com/langflow-ai/langflow/tree/60999cc9a7350e44dde3ef641baae864e10861f0)
- unclecode/crawl4ai: Read on November 4, 2026, at commit cae74b2 (https://github.com/unclecode/crawl4ai/tree/cae74b203a33994f7e13b9052c3b0d5c93daa0e6)

## 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.