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KittenTTS vs vllm

KittenTTS and vllm share 8 technologies: FastAPI, Hugging Face, NVIDIA, torch, safetensors, transformers, einops, and torchaudio. Both are written in Python.

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What they share and what sets them apart

KittenML

KittenTTS

Open-source State-of-the-art TTS model which runs on a CPU 😻

Python16.8kRead on November 7, 2026, at commit b9517e3What is KittenTTS built with?

Only in KittenTTS

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.
KittenTTS16,429 lines written42 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.
KittenTTS8.1% of its commits signed by AIWith 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.
KittenTTSLast push October 27, 202674 commits16,806 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.
KittenTTS9 test files54.8% 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, KittenTTS or vllm?
vllm, with 2,375,117 lines written; KittenTTS has 16,429.

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

Which has more GitHub stars, KittenTTS or vllm?
vllm, with 96,302 stars; KittenTTS has 16,806.

The proof: vllm-project/vllm on GitHub

Which has more tests, KittenTTS or vllm?
vllm, with 2,419 test files; KittenTTS has 9.

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

Which was updated more recently, KittenTTS or vllm?
vllm: its last push was on November 4, 2026, and KittenTTS's on October 27, 2026.

The proof: vllm-project/vllm's commits on GitHub

Which has more commits signed by AI, KittenTTS 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 KittenTTS, 8.1%.

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

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