Source: https://seerepo.com/compare/Comfy-Org/ComfyUI/vs/PrefectHQ/prefect
Markdown source: https://seerepo.com/compare/Comfy-Org/ComfyUI/vs/PrefectHQ/prefect.md
Description: ComfyUI and prefect share 4 technologies: AIOHTTP, SQLAlchemy, alembic, and Pydantic. Both are written in Python.

# ComfyUI vs prefect

ComfyUI and prefect share 4 technologies: AIOHTTP, SQLAlchemy, alembic, and Pydantic. Both are written in Python.

- [Comfy-Org/ComfyUI](https://seerepo.com/r/Comfy-Org/ComfyUI): The most powerful and modular diffusion model GUI, api and backend with a graph/nodes interface. The fastest local inference engine in the world.
- [PrefectHQ/prefect](https://seerepo.com/r/PrefectHQ/prefect): Prefect is a workflow orchestration framework for building resilient data pipelines in Python.

## What they share and what sets them apart

- In common: AIOHTTP, SQLAlchemy, alembic, Pydantic
- Only in ComfyUI: torch, einops, transformers, tokenizers, sentencepiece, pillow, av, psutil
- Only in prefect: FastAPI, aiosqlite, Redis, Postgres, SQLite, starlette, uvicorn, Ray, Vite, React, @tanstack/react-router, Vue, vue-router, Rich, azure-identity, cryptography, jinja2, jsonschema, OpenTelemetry, docker, prometheus-client, boto3, Tailwind CSS, class-variance-authority, next-themes, tailwind-merge, sonner, React Hook Form, Radix UI, tanstack, recharts, @uiw/react-codemirror, codemirror, react-day-picker, dnd-kit, cmdk, GSAP, Mermaid, Lucide, @radix-ui/react-icons, react-markdown, rehype-raw, rehype-sanitize, remark-gfm, Zod, @hookform/resolvers

## Side by side

| | ComfyUI | prefect |
|---|---|---|
| Size | 348,332 lines written, 731 code files | 945,152 lines written, 2,114 code files |
| Who writes it | 0.3% of its commits signed by AI. With Amp, Claude Code, and GitHub Copilot | 9.7% of its commits signed by AI. With Devin, Claude Code, Codex, GitHub Copilot, and Cursor |
| Activity | Last push November 4, 2026, 6,036 commits, 144,948 stars | Last push November 4, 2026, 18,695 commits, 24,112 stars |
| Tests | 280 test files. 21.8% of its code files have a test that imports them | 1,242 test files. 26.9% 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, ComfyUI or prefect?

prefect, with 945,152 lines written; ComfyUI has 348,332.

The proof: [PrefectHQ/prefect's code at commit 60d9ea5](https://github.com/PrefectHQ/prefect/tree/60d9ea54535ee10be2e7481fd1d930815c87b649)

### Which has more GitHub stars, ComfyUI or prefect?

ComfyUI, with 144,948 stars; prefect has 24,112.

The proof: [Comfy-Org/ComfyUI on GitHub](https://github.com/Comfy-Org/ComfyUI)

### Which has more tests, ComfyUI or prefect?

prefect, with 1,242 test files; ComfyUI has 280.

The proof: [PrefectHQ/prefect's code at commit 60d9ea5](https://github.com/PrefectHQ/prefect/tree/60d9ea54535ee10be2e7481fd1d930815c87b649)

### Which was updated more recently, ComfyUI or prefect?

Both got their last push on November 4, 2026.

The proof: [Comfy-Org/ComfyUI's commits on GitHub](https://github.com/Comfy-Org/ComfyUI/commits)

### Which has more commits signed by AI, ComfyUI or prefect?

prefect: an AI signed 9.7% of its commits, with Devin, Claude Code, Codex, GitHub Copilot, and Cursor; in ComfyUI, 0.3%.

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

## Sources

- Comfy-Org/ComfyUI: Read on November 4, 2026, at commit 70bcb4e (https://github.com/Comfy-Org/ComfyUI/tree/70bcb4e9fc70f19b7cdb340966351ed6479f2188)
- PrefectHQ/prefect: Read on November 4, 2026, at commit 60d9ea5 (https://github.com/PrefectHQ/prefect/tree/60d9ea54535ee10be2e7481fd1d930815c87b649)

## 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.