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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.

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What they share and what sets them apart

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.

Python160.4kRead on November 4, 2026, at commit 1ac9aa0What is dify built with?
slopus

happy

Orchestrate Claude, Codex and Grok in one app. Open-source (MIT), reuses the subscriptions you already pay for.

Swift24.5kRead on November 4, 2026, at commit e99bd0fWhat is happy built with?

In common

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

SizeLines written by people and agents, without generated ones; code files, without tests.
dify2,369,007 lines written6,557 code files
happy796,200 lines written2,552 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
dify5.1% of its commits signed by AIWith GitHub Copilot, Claude Code, Gemini CLI, Codex, Jules, Devin, Cursor, and Warp
happy14.6% of its commits signed by AIWith Claude Code and Codex
ActivityFrom GitHub and its history, on the day SeeRepo read it.
difyLast push November 4, 202614,820 commits160,382 stars
happyLast push November 4, 20263,807 commits24,473 stars
TestsThe files that test the code, and the share of code files a test imports.
dify4,748 test files67.4% of its code files have a test that imports them
happy1,437 test files65.8% of its code files have a test that imports them

Frequently asked questions

Which is bigger, dify or happy?
dify, with 2,369,007 lines written in 6,557 code files; happy has 796,200 in 2,552.

The proof: langgenius/dify's code at commit 1ac9aa0

Which has more GitHub stars, dify or happy?
dify, with 160,382 stars; happy has 24,473.

The proof: langgenius/dify on GitHub

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

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

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

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