Source: https://seerepo.com/compare/chidiwilliams/buzz/vs/comet-ml/opik
Markdown source: https://seerepo.com/compare/chidiwilliams/buzz/vs/comet-ml/opik.md
Description: buzz and opik share 6 technologies: OpenAI, PostHog, accelerate, torch, peft, and transformers. Both are written in Python.

# buzz vs opik

buzz and opik share 6 technologies: OpenAI, PostHog, accelerate, torch, peft, and transformers. Both are written in Python.

- [chidiwilliams/buzz](https://seerepo.com/r/chidiwilliams/buzz): Buzz transcribes and translates audio offline on your personal computer. Powered by OpenAI's Whisper.
- [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: OpenAI, PostHog, accelerate, torch, peft, transformers
- Only in buzz: ONNX, onnxruntime, openai-whisper, faster-whisper, bitsandbytes, demucs, torchaudio, yt-dlp, psutil
- Only in opik: FastAPI, JAX-RS, Flask, werkzeug, flask-cors, redisson, s3, Redis, MySQL, Anthropic, Sentry, AWS S3, Hugging Face, AIOHTTP, anyio, Vite, React, tanstack, Rich, itsdangerous, spaCy, tiktoken, tokenizers, litellm, LangChain, datasets, scikit-learn, markdown-it-py, markupsafe, jinja2, pillow, annotated-types, referencing, Pydantic, jsonschema, pydantic-core, Gunicorn, OpenTelemetry, opentelemetry-instrumentation-flask, opentelemetry-instrumentation-logging, opentelemetry-instrumentation-requests, opentelemetry-instrumentation-system-metrics, botocore, docker, class-variance-authority, Tailwind CSS, tailwind-merge, React Hook Form, Radix UI, @uiw/react-codemirror, CodeMirror, recharts, 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, Lucide, mustache, react-markdown, remark-breaks, remark-gfm, 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

| | buzz | opik |
|---|---|---|
| Size | 55,393 lines written, 123 code files | 1,680,031 lines written, 7,878 code files |
| Who writes it | 2.1% 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 November 4, 2026, 808 commits, 22,415 stars | Last push November 4, 2026, 7,898 commits, 23,166 stars |
| Tests | 91 test files. 78.9% 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, buzz or opik?

opik, with 1,680,031 lines written; buzz has 55,393.

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

### Which has more GitHub stars, buzz or opik?

opik, with 23,166 stars; buzz has 22,415.

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

### Which has more tests, buzz or opik?

opik, with 2,703 test files; buzz has 91.

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

### Which was updated more recently, buzz or opik?

Both got their last push on November 4, 2026.

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

### Which has more commits signed by AI, buzz or opik?

opik: an AI signed 19.7% of its commits, with Claude Code, GitHub Copilot, and Cursor; in buzz, 2.1%.

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

## Sources

- chidiwilliams/buzz: Read on November 5, 2026, at commit de7484b (https://github.com/chidiwilliams/buzz/tree/de7484bea317ebb17dcb27da3a6e4109f9bb33e7)
- 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.