Source: https://seerepo.com/compare/datawhalechina/hello-agents/vs/mermaid-js/mermaid
Markdown source: https://seerepo.com/compare/datawhalechina/hello-agents/vs/mermaid-js/mermaid.md
Description: hello-agents and mermaid share 4 technologies: D3, katex, dompurify, and marked. hello-agents is written in Python and mermaid in TypeScript.

# hello-agents vs mermaid

hello-agents and mermaid share 4 technologies: D3, katex, dompurify, and marked. hello-agents is written in Python and mermaid in TypeScript.

- [datawhalechina/hello-agents](https://seerepo.com/r/datawhalechina/hello-agents): 📚 《从零开始构建智能体》——从零开始的智能体原理与实践教程
- [mermaid-js/mermaid](https://seerepo.com/r/mermaid-js/mermaid): Generation of diagrams like flowcharts or sequence diagrams from text in a similar manner as markdown

## What they share and what sets them apart

- In common: D3, katex, dompurify, marked
- Only in hello-agents: FastAPI, uvicorn, aiosqlite, asyncpg, psycopg2-binary, Postgres, chromadb, Redis, SQLite, oracledb, pymilvus, OpenAI, Qdrant, Hugging Face, Flask, fastmcp, starlette, anyio, AIOHTTP, Streamlit, Vite, Vue, vue-router, React, react-router-dom, cycler, fonttools, contourpy, Plotly, Gradio, matplotlib, Rich, alembic, SQLAlchemy, bcrypt, accelerate, MCP, onnxruntime, peft, safetensors, tavily-python, tokenizers, torch, transformers, scikit-learn, sentence-transformers, tiktoken, datasets, langchain-openai, LangGraph, paddlenlp, rank-bm25, spaCy, lxml, markdown, openpyxl, pdfminer.six, pypdf, python-docx, reportlab, xlrd, pdfplumber, pillow, feedparser, pymupdf, beautifulsoup4, jinja2, annotated-types, email-validator, pydantic-core, Pydantic, jsonschema, OpenTelemetry, opentelemetry-exporter-otlp-proto-grpc, loguru, Tailwind CSS, markdown-it, vue-flow, Chart.js, vue-chartjs, highlight.js, react-markdown, Element, echarts, Leaflet, Mermaid, html2canvas, jspdf
- Only in mermaid: js-yaml, markdown-table, sharp, stylis, roughjs, dagre-d3-es, cytoscape, cytoscape-cose-bilkent, cytoscape-fcose, elkjs, @braintree/sanitize-url, Ajv

## Side by side

| | hello-agents | mermaid |
|---|---|---|
| Size | 226,661 lines written, 1,212 code files | 232,641 lines written, 670 code files |
| Who writes it | 2.4% of its commits signed by AI. With Codex, Cursor, and Claude Code | 5.1% of its commits signed by AI. With Claude Code, Codex, Cursor, GitHub Copilot, and CodeRabbit |
| Activity | Last push October 13, 2026, 660 commits, 86,039 stars | Last push November 4, 2026, 11,988 commits, 91,011 stars |
| Tests | 97 test files. 6.9% of its code files have a test that imports them | 505 test files. 40.1% 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, hello-agents or mermaid?

mermaid, with 232,641 lines written; hello-agents has 226,661.

The proof: [mermaid-js/mermaid's code at commit 63333fd](https://github.com/mermaid-js/mermaid/tree/63333fd8db0540377d84795c7a43c59ded353b18)

### Which has more GitHub stars, hello-agents or mermaid?

mermaid, with 91,011 stars; hello-agents has 86,039.

The proof: [mermaid-js/mermaid on GitHub](https://github.com/mermaid-js/mermaid)

### Which has more tests, hello-agents or mermaid?

mermaid, with 505 test files; hello-agents has 97.

The proof: [mermaid-js/mermaid's code at commit 63333fd](https://github.com/mermaid-js/mermaid/tree/63333fd8db0540377d84795c7a43c59ded353b18)

### Which was updated more recently, hello-agents or mermaid?

mermaid: its last push was on November 4, 2026, and hello-agents's on October 13, 2026.

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

### Which has more commits signed by AI, hello-agents or mermaid?

mermaid: an AI signed 5.1% of its commits, with Claude Code, Codex, Cursor, GitHub Copilot, and CodeRabbit; in hello-agents, 2.4%.

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

## Sources

- datawhalechina/hello-agents: Read on November 4, 2026, at commit 36f583c (https://github.com/datawhalechina/hello-agents/tree/36f583c233ea5cee4537ef93455702b55053af18)
- mermaid-js/mermaid: Read on November 4, 2026, at commit 63333fd (https://github.com/mermaid-js/mermaid/tree/63333fd8db0540377d84795c7a43c59ded353b18)

## 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.