Source: https://seerepo.com/compare/github/spec-kit/vs/langflow-ai/langflow
Markdown source: https://seerepo.com/compare/github/spec-kit/vs/langflow-ai/langflow.md
Description: spec-kit and langflow share 3 technologies: Rich, MCP, and Pydantic. Both are written in Python.

# spec-kit vs langflow

spec-kit and langflow share 3 technologies: Rich, MCP, and Pydantic. Both are written in Python.

- [github/spec-kit](https://seerepo.com/r/github/spec-kit): 💫 Toolkit to help you get started with SDD or any other process!
- [langflow-ai/langflow](https://seerepo.com/r/langflow-ai/langflow): Langflow is a powerful tool for building and deploying AI-powered agents and workflows.

## What they share and what sets them apart

- In common: Rich, MCP, Pydantic
- Only in spec-kit: None
- Only in langflow: FastAPI, pyarrow, oracledb, Redis, Google, OpenAI, uvicorn, AIOHTTP, Vite, React, react-router-dom, SQLAlchemy, cryptography, pyjwt, bcrypt, google-auth-oauthlib, firecrawl-py, LangChain, langchain-classic, exa-py, pillow, defusedxml, pypdf, markitdown, 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

## Side by side

| | spec-kit | langflow |
|---|---|---|
| Size | 267,127 lines written, 293 code files | 1,446,517 lines written, 3,937 code files |
| Who writes it | 47.1% of its commits signed by AI. With GitHub Copilot, Claude Code, Cursor, Mistral Vibe, Factory, Codex, and Gemini CLI | 1.5% of its commits signed by AI. With Claude Code, CodeRabbit, GitHub Copilot, Cursor, Codex, and Warp |
| Activity | Last push November 3, 2026, 2,178 commits, 146,894 stars | Last push November 4, 2026, 17,600 commits, 156,316 stars |
| Tests | 364 test files. 53.6% of its code files have a test that imports them | 3,083 test files. 35.1% 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, spec-kit or langflow?

langflow, with 1,446,517 lines written; spec-kit has 267,127.

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

### Which has more GitHub stars, spec-kit or langflow?

langflow, with 156,316 stars; spec-kit has 146,894.

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

### Which has more tests, spec-kit or langflow?

langflow, with 3,083 test files; spec-kit has 364.

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

### Which was updated more recently, spec-kit or langflow?

langflow: its last push was on November 4, 2026, and spec-kit's on November 3, 2026.

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

### Which has more commits signed by AI, spec-kit or langflow?

spec-kit: an AI signed 47.1% of its commits, with GitHub Copilot, Claude Code, Cursor, Mistral Vibe, Factory, Codex, and Gemini CLI; in langflow, 1.5%.

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

## Sources

- github/spec-kit: Read on November 4, 2026, at commit a227e38 (https://github.com/github/spec-kit/tree/a227e38315cd38172b04f2fb8f06ce8b69b38331)
- langflow-ai/langflow: Read on November 4, 2026, at commit 60999cc (https://github.com/langflow-ai/langflow/tree/60999cc9a7350e44dde3ef641baae864e10861f0)

## 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.