DeepSpeed vs vllm

DeepSpeed and vllm share 9 technologies: sentencepiece, torch, transformers, triton, einops, safetensors, torchvision, Pydantic, and psutil. Both are written in Python.

Read it as markdown

What they share and what sets them apart

deepspeedai

DeepSpeed

DeepSpeed is a deep learning optimization library that makes distributed training and inference easy, efficient, and effective.

Python43.3kRead on November 6, 2026, at commit f47dc3eWhat is DeepSpeed built with?

Only in DeepSpeed

In common

vllm-project

vllm

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

Python96.3kRead on November 4, 2026, at commit 75f6761What is vllm built with?

Only in vllm

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
DeepSpeed247,033 lines written760 code files
vllm2,375,117 lines written3,289 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.
DeepSpeed2.7% of its commits signed by AIWith GitHub Copilot, Cursor, and Claude Code
vllm12.8% 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.
DeepSpeedLast push November 6, 20263,619 commits43,302 stars
vllmLast push November 4, 202624,593 commits96,302 stars
TestsThe files that test the code, and the share of code files a test imports.
DeepSpeed395 test files33% of its code files have a test that imports them
vllm2,419 test files60.2% of its code files have a test that imports them

Frequently asked questions

Which is bigger, DeepSpeed or vllm?
vllm, with 2,375,117 lines written; DeepSpeed has 247,033.

The proof: vllm-project/vllm's code at commit 75f6761

Which has more GitHub stars, DeepSpeed or vllm?
vllm, with 96,302 stars; DeepSpeed has 43,302.

The proof: vllm-project/vllm on GitHub

Which has more tests, DeepSpeed or vllm?
vllm, with 2,419 test files; DeepSpeed has 395.

The proof: vllm-project/vllm's code at commit 75f6761

Which was updated more recently, DeepSpeed or vllm?
DeepSpeed: its last push was on November 6, 2026, and vllm's on November 4, 2026.

The proof: deepspeedai/DeepSpeed's commits on GitHub

Which has more commits signed by AI, DeepSpeed or vllm?
vllm: an AI signed 12.8% of its commits, with Claude Code, Codex, Gemini CLI, Cursor, GitHub Copilot, Devin, Mistral Vibe, CodeRabbit, Factory, and Qwen Code; in DeepSpeed, 2.7%.

The proof: the commits each tool signed in vllm-project/vllm

See inside your code, today.

Paste your repo and see it drawn, part by part: a medium one in under a minute.

Free, no account.

Or look inside SeeRepo's own →