Source: https://seerepo.com/compare/bojieli/ai-agent-book/vs/comet-ml/opik
Markdown source: https://seerepo.com/compare/bojieli/ai-agent-book/vs/comet-ml/opik.md
Description: ai-agent-book and opik share 29 technologies: React, FastAPI, OpenAI, Anthropic, Hugging Face, PostHog, Flask, anyio, AIOHTTP, Vite, Rich, accelerate, torch, transformers, peft, datasets, tiktoken, litellm, scikit-learn, pillow, Pydantic, Tailwind CSS, recharts, class-variance-authority, tailwind-merge, Radix UI, Lucide, react-markdown, and remark-gfm. Both are written in Python.

# ai-agent-book vs opik

ai-agent-book and opik share 29 technologies: React, FastAPI, OpenAI, Anthropic, Hugging Face, PostHog, Flask, anyio, AIOHTTP, Vite, Rich, accelerate, torch, transformers, peft, datasets, tiktoken, litellm, scikit-learn, pillow, Pydantic, Tailwind CSS, recharts, class-variance-authority, tailwind-merge, Radix UI, Lucide, react-markdown, and remark-gfm. Both are written in Python.

- [bojieli/ai-agent-book](https://seerepo.com/r/bojieli/ai-agent-book): 《深入理解 AI Agent：设计原理与工程实践》（李博杰 著）开源主仓库：全书正文、编译版 PDF 与按章配套代码
- [comet-ml/opik](https://seerepo.com/r/comet-ml/opik): Debug, evaluate, and monitor your LLM applications, RAG systems, and agentic workflows with comprehensive tracing, automated evaluations, and production-ready dashboards.

## What they share and what sets them apart

- In common: React, FastAPI, OpenAI, Anthropic, Hugging Face, PostHog, Flask, anyio, AIOHTTP, Vite, Rich, accelerate, torch, transformers, peft, datasets, tiktoken, litellm, scikit-learn, pillow, Pydantic, Tailwind CSS, recharts, class-variance-authority, tailwind-merge, Radix UI, Lucide, react-markdown, remark-gfm
- Only in ai-agent-book: uvicorn, azure-search-documents, azure-storage-blob, chromadb, psycopg2-binary, Postgres, pyarrow, Google, fastmcp, Next.js, Express, Astro, mkdocs-material, matplotlib, seaborn, Plotly, authlib, google-auth, google-auth-httplib2, google-auth-oauthlib, pyotp, bitsandbytes, cut-cross-entropy, faiss-cpu, lightgbm, mem0ai, nltk, openai-whisper, scikit-image, sentencepiece, triton, xformers, MCP, Ollama, rank-bm25, groq, librosa, trl, snac, torchaudio, opencv-python, sentence-transformers, langchain-openai, mlx-audio, vLLM, lxml, python-magic, torchcodec, xlrd, xlsxwriter, beautifulsoup4, python-pptx, pypdf2, reportlab, html2text, pypdf, python-docx, openpyxl, markdown, pdfplumber, pymupdf, sendgrid, youtube-transcript-api, yt-dlp, structlog, loguru, psutil, pptxgenjs, sharp, D3, onnxruntime-node, react-syntax-highlighter, katex
- Only in opik: JAX-RS, werkzeug, flask-cors, redisson, s3, Redis, MySQL, Sentry, AWS S3, tanstack, itsdangerous, spaCy, tokenizers, LangChain, markdown-it-py, markupsafe, jinja2, annotated-types, referencing, jsonschema, pydantic-core, Gunicorn, OpenTelemetry, opentelemetry-instrumentation-flask, opentelemetry-instrumentation-logging, opentelemetry-instrumentation-requests, opentelemetry-instrumentation-system-metrics, botocore, docker, React Hook Form, @uiw/react-codemirror, CodeMirror, dnd-kit, react-hotkeys-hook, react-textarea-autosize, react18-json-view, react-day-picker, cmdk, react-intersection-observer, react-player, @lezer/highlight, Mermaid, re-resizable, react-grid-layout, react-resizable-panels, Vega, vega-lite, mustache, remark-breaks, ansi-to-html, react-pdf, rehype-raw, rehype-sanitize, unist-util-visit, yaml, Zod, @hookform/resolvers, ora, ai, @ai-sdk/google, Nunjucks, @clack/prompts, zod-to-json-schema, @opentelemetry/sdk-trace-base

## Side by side

| | ai-agent-book | opik |
|---|---|---|
| Size | 422,447 lines written, 1,067 code files | 1,680,031 lines written, 7,878 code files |
| Who writes it | 20.8% of its commits signed by AI. With Claude Code | 19.7% of its commits signed by AI. With Claude Code, GitHub Copilot, and Cursor |
| Activity | Last push October 8, 2026, 1,610 commits, 57,240 stars | Last push November 4, 2026, 7,898 commits, 23,166 stars |
| Tests | 624 test files. 34.3% of its code files have a test that imports them | 2,703 test files. 20.9% 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, ai-agent-book or opik?

opik, with 1,680,031 lines written; ai-agent-book has 422,447.

The proof: [comet-ml/opik's code at commit df61dd2](https://github.com/comet-ml/opik/tree/df61dd21c66e5ed901dafba326bf29cb4b4fbcfb)

### Which has more GitHub stars, ai-agent-book or opik?

ai-agent-book, with 57,240 stars; opik has 23,166.

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

### Which has more tests, ai-agent-book or opik?

opik, with 2,703 test files; ai-agent-book has 624.

The proof: [comet-ml/opik's code at commit df61dd2](https://github.com/comet-ml/opik/tree/df61dd21c66e5ed901dafba326bf29cb4b4fbcfb)

### Which was updated more recently, ai-agent-book or opik?

opik: its last push was on November 4, 2026, and ai-agent-book's on October 8, 2026.

The proof: [comet-ml/opik's commits on GitHub](https://github.com/comet-ml/opik/commits)

### Which has more commits signed by AI, ai-agent-book or opik?

ai-agent-book: an AI signed 20.8% of its commits, with Claude Code; in opik, 19.7%.

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

## Sources

- bojieli/ai-agent-book: Read on November 5, 2026, at commit dbc046e (https://github.com/bojieli/ai-agent-book/tree/dbc046eb896ac4e39aa19c7774c8bf49583b89a6)
- comet-ml/opik: Read on November 4, 2026, at commit df61dd2 (https://github.com/comet-ml/opik/tree/df61dd21c66e5ed901dafba326bf29cb4b4fbcfb)

## 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.