microduck vs vllm

microduck and vllm share 8 technologies: axum, FastAPI, Tokio, image, jinja2, tracing, tracing-subscriber, and Hugging Face. microduck is written in Rust and vllm in Python.

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What they share and what sets them apart

In common

vllm-project

vllm

A high-throughput and memory-efficient inference and serving engine for LLMs

Python96.6kRead on November 9, 2026, at commit 821851eWhat is vllm built with?

Only in vllm

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
microduck157,955 lines written206 code files
vllm2,426,215 lines written3,378 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.
microduck25.8% of its commits signed by AIWith Claude Code and Codex
vllm13.4% of its commits signed by AIWith Claude Code, Codex, Gemini CLI, Cursor, GitHub Copilot, Devin, Mistral Vibe, CodeRabbit, Factory, and Qwen Code
ActivityFrom GitHub and its history, on the day SeeRepo read it.
microduckLast push November 9, 20261,081 commits13,619 stars
vllmLast push November 9, 202624,920 commits96,584 stars
TestsThe files that test the code, and the share of code files a test imports.
microduck19 test files1.5% of its code files have a test that imports them
vllm2,469 test files60.9% of its code files have a test that imports them

Frequently asked questions

Which is bigger, microduck or vllm?
vllm, with 2,426,215 lines written; microduck has 157,955.

The proof: vllm-project/vllm's code at commit 821851e

Which has more GitHub stars, microduck or vllm?
vllm, with 96,584 stars; microduck has 13,619.

The proof: vllm-project/vllm on GitHub

Which has more tests, microduck or vllm?
vllm, with 2,469 test files; microduck has 19.

The proof: vllm-project/vllm's code at commit 821851e

Which was updated more recently, microduck or vllm?
Both got their last push on November 9, 2026.

The proof: pollen-robotics/microduck's commits on GitHub

Which has more commits signed by AI, microduck or vllm?
microduck: an AI signed 25.8% of its commits, with Claude Code and Codex; in vllm, 13.4%.

The proof: the commits each tool signed in pollen-robotics/microduck

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