Source: https://seerepo.com/compare/langgenius/dify/vs/leon-ai/leon
Markdown source: https://seerepo.com/compare/langgenius/dify/vs/leon-ai/leon.md
Description: dify and leon share 7 technologies: SQLite, React, Vite, Ajv, yaml, @tanstack/react-virtual, and @pierre/highlights. dify is written in Python and leon in TypeScript.

# dify vs leon

dify and leon share 7 technologies: SQLite, React, Vite, Ajv, yaml, @tanstack/react-virtual, and @pierre/highlights. dify is written in Python and leon in TypeScript.

- [langgenius/dify](https://seerepo.com/r/langgenius/dify): Build Agentic workflows, RAG pipelines, with rich AI model and tool support on one collaborative workspace. Deploy on cloud, VPC, or self-hosted, so teams move from prototype to production without rebuilding the stack.
- [leon-ai/leon](https://seerepo.com/r/leon-ai/leon): 🧠 Leon is your open-source personal assistant.

## What they share and what sets them apart

- In common: SQLite, React, Vite, Ajv, yaml, @tanstack/react-virtual, @pierre/highlights
- Only in dify: net/http, Flask, psycopg2-binary, Celery, Redis, Postgres, MySQL, Resend, Sentry, werkzeug, Hono, Next.js, pyjwt, langsmith, markdown-it-py, bleach, Pydantic, boto3, js-yaml, Zod, @hono/node-server, Tailwind CSS, class-variance-authority, cn, Base UI, @xmldom/xmldom, sharp, next-themes, lexical, react-sortablejs, @floating-ui/react, echarts, react-textarea-autosize, @monaco-editor/react, embla-carousel-autoplay, embla-carousel-react, elkjs, motion, pele, @heroicons/react, streamdown, dompurify, unist-util-visit, html-to-image, katex, mediabunny, qrcode.react, remark-directive
- Only in leon: @tanstack/react-router, Hugging Face, Fastify, @fontsource/jetbrains-mono, @ark-ui/react, cli-spinner, remixicon, jose, ai-sdk, transformers, node-llama-cpp, ai, faster-whisper, g2p-en, OpenRouter, beautifulsoup4, shiki, @sinclair/typebox, ajv-formats

## Side by side

| | dify | leon |
|---|---|---|
| Size | 2,369,007 lines written, 6,557 code files | 225,418 lines written, 800 code files |
| Who writes it | 5.1% of its commits signed by AI. With GitHub Copilot, Claude Code, Gemini CLI, Codex, Jules, Devin, Cursor, and Warp | 0% of its commits signed by AI |
| Activity | Last push November 4, 2026, 14,820 commits, 160,382 stars | Last push November 6, 2026, 3,130 commits, 17,646 stars |
| Tests | 4,748 test files. 67.4% of its code files have a test that imports them | 182 test files. 26.4% 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, dify or leon?

dify, with 2,369,007 lines written; leon has 225,418.

The proof: [langgenius/dify's code at commit 1ac9aa0](https://github.com/langgenius/dify/tree/1ac9aa0d3c93733667d2095f3de2fa4cae0a3e1d)

### Which has more GitHub stars, dify or leon?

dify, with 160,382 stars; leon has 17,646.

The proof: [langgenius/dify on GitHub](https://github.com/langgenius/dify)

### Which has more tests, dify or leon?

dify, with 4,748 test files; leon has 182.

The proof: [langgenius/dify's code at commit 1ac9aa0](https://github.com/langgenius/dify/tree/1ac9aa0d3c93733667d2095f3de2fa4cae0a3e1d)

### Which was updated more recently, dify or leon?

leon: its last push was on November 6, 2026, and dify's on November 4, 2026.

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

### Which has more commits signed by AI, dify or leon?

dify: an AI signed 5.1% of its commits, with GitHub Copilot, Claude Code, Gemini CLI, Codex, Jules, Devin, Cursor, and Warp.

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

## Sources

- langgenius/dify: Read on November 4, 2026, at commit 1ac9aa0 (https://github.com/langgenius/dify/tree/1ac9aa0d3c93733667d2095f3de2fa4cae0a3e1d)
- leon-ai/leon: Read on November 6, 2026, at commit f5795bd (https://github.com/leon-ai/leon/tree/f5795bd79ef946933603b4b47b27225912278df6)

## 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.