Source: https://seerepo.com/compare/langgenius/dify/vs/slopus/happy
Markdown source: https://seerepo.com/compare/langgenius/dify/vs/slopus/happy.md
Description: dify and happy share 6 technologies: Redis, Postgres, Hono, React, Zod, and sharp. dify is written in Python and happy in Swift.

# dify vs happy

dify and happy share 6 technologies: Redis, Postgres, Hono, React, Zod, and sharp. dify is written in Python and happy in Swift.

- [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.
- [slopus/happy](https://seerepo.com/r/slopus/happy): Orchestrate Claude, Codex and Grok in one app. Open-source (MIT), reuses the subscriptions you already pay for.

## What they share and what sets them apart

- In common: Redis, Postgres, Hono, React, Zod, sharp
- Only in dify: net/http, Flask, psycopg2-binary, Celery, SQLite, MySQL, Resend, Sentry, werkzeug, Vite, Next.js, pyjwt, langsmith, markdown-it-py, bleach, Pydantic, boto3, js-yaml, Ajv, @hono/node-server, Tailwind CSS, class-variance-authority, cn, Base UI, @xmldom/xmldom, yaml, next-themes, lexical, react-sortablejs, @floating-ui/react, echarts, react-textarea-autosize, @tanstack/react-virtual, @monaco-editor/react, @pierre/highlights, 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 happy: Jetpack Compose, androidx.core:core-ktx, react-native, Expo, Tauri, PostHog, @tauri-apps/api, Anthropic, MCP, Fastify, GitHub, appcompat, androidx.recyclerview:recyclerview, androidx.swiperefreshlayout:swiperefreshlayout, react-native-safe-area-context, com.google.zxing:core, qrcode-terminal, expo-font, react-native-reanimated, react-native-gesture-handler, expo-blur, expo-status-bar, expo-splash-screen, Mermaid, prismjs, qrcode, expo-updates, log, @agentclientprotocol/sdk, Prisma, pino, pino-pretty

## Side by side

| | dify | happy |
|---|---|---|
| Size | 2,369,007 lines written, 6,557 code files | 796,200 lines written, 2,552 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 | 14.6% of its commits signed by AI. With Claude Code and Codex |
| Activity | Last push November 4, 2026, 14,820 commits, 160,382 stars | Last push November 4, 2026, 3,807 commits, 24,473 stars |
| Tests | 4,748 test files. 67.4% of its code files have a test that imports them | 1,437 test files. 65.8% 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 happy?

dify, with 2,369,007 lines written; happy has 796,200.

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

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

dify, with 160,382 stars; happy has 24,473.

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

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

dify, with 4,748 test files; happy has 1,437.

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

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

Both got their last push on November 4, 2026.

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

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

happy: an AI signed 14.6% of its commits, with Claude Code and Codex; in dify, 5.1%.

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

## Sources

- langgenius/dify: Read on November 4, 2026, at commit 1ac9aa0 (https://github.com/langgenius/dify/tree/1ac9aa0d3c93733667d2095f3de2fa4cae0a3e1d)
- slopus/happy: Read on November 4, 2026, at commit e99bd0f (https://github.com/slopus/happy/tree/e99bd0f7060f1169c8acf98e4197df5f347147a6)

## 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.