opik vs OpenSpec
opik and OpenSpec share 4 technologies: Tailwind CSS, yaml, Zod, and ora. opik is written in Python and OpenSpec in TypeScript.
LinkedInWhat they share and what sets them apart
comet-ml
opik
Debug, evaluate, and monitor your LLM applications, RAG systems, and agentic workflows with comprehensive tracing, automated evaluations, and production-ready dashboards.
Python23.2kRead on November 4, 2026, at commit df61dd2What is opik built with?Only in opik
- FastAPI
- JAX-RS
- Flask
werkzeug
- flask-cors
- redisson
- s3
- Redis
- MySQL
OpenAI- Anthropic
- Sentry
AWS S3- Hugging Face
- AIOHTTP
- anyio
- Vite
- React
- tanstack
PostHog- Rich
itsdangerous
accelerate
- spaCy
- tiktoken
tokenizers
litellm
- LangChain
- transformers
- torch
- datasets
peft
- scikit-learn
markdown-it-py
markupsafe
- jinja2
pillow
- annotated-types
- referencing
- Pydantic
- jsonschema
- pydantic-core
- Gunicorn
- OpenTelemetry
opentelemetry-instrumentation-flask
- botocore
- docker
class-variance-authority
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
@hookform/resolvers
ai
- Nunjucks
@clack/prompts
- zod-to-json-schema
- @opentelemetry/sdk-trace-base
In common
Fission-AI
OpenSpec
Spec-driven development (SDD) for AI coding assistants.
TypeScript74kRead on November 5, 2026, at commit 3e4d5f0What is OpenSpec built with?Only in OpenSpec
- Inquirer
Side by side
opikOpenSpec
SizeLines written by people and agents, without generated ones; code files, without tests.
opik1,680,031 lines written7,878 code files
OpenSpec144,693 lines written218 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.
opik19.7% of its commits signed by AIWith Claude Code, GitHub Copilot, and Cursor
OpenSpec28.9% of its commits signed by AIWith Claude Code, Codex, CodeRabbit, Cursor, Mistral Vibe, GitHub Copilot, Qwen Code, and Crush
ActivityFrom GitHub and its history, on the day SeeRepo read it.
opikLast push November 4, 20267,898 commits23,166 stars
OpenSpecLast push November 4, 2026967 commits73,952 stars
TestsThe files that test the code, and the share of code files a test imports.
opik2,703 test files20.9% of its code files have a test that imports them
OpenSpec245 test files74.3% of its code files have a test that imports them
Frequently asked questions
Which is bigger, opik or OpenSpec?
opik, with 1,680,031 lines written; OpenSpec has 144,693.
The proof: comet-ml/opik's code at commit df61dd2
Which has more GitHub stars, opik or OpenSpec?
OpenSpec, with 73,952 stars; opik has 23,166.
The proof: Fission-AI/OpenSpec on GitHub
Which has more tests, opik or OpenSpec?
opik, with 2,703 test files; OpenSpec has 245.
The proof: comet-ml/opik's code at commit df61dd2
Which was updated more recently, opik or OpenSpec?
Both got their last push on November 4, 2026.
The proof: comet-ml/opik's commits on GitHub
Which has more commits signed by AI, opik or OpenSpec?
OpenSpec: an AI signed 28.9% of its commits, with Claude Code, Codex, CodeRabbit, Cursor, Mistral Vibe, GitHub Copilot, Qwen Code, and Crush; in opik, 19.7%.
The proof: the commits each tool signed in Fission-AI/OpenSpec
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