Source: https://seerepo.com/compare/jamiepine/voicebox/vs/KittenML/KittenTTS
Markdown source: https://seerepo.com/compare/jamiepine/voicebox/vs/KittenML/KittenTTS.md
Description: voicebox and KittenTTS share 8 technologies: FastAPI, Hugging Face, diffusers, s3tokenizer, torchaudio, torch, transformers, and librosa. voicebox is written in TypeScript and KittenTTS in Python.

# voicebox vs KittenTTS

voicebox and KittenTTS share 8 technologies: FastAPI, Hugging Face, diffusers, s3tokenizer, torchaudio, torch, transformers, and librosa. voicebox is written in TypeScript and KittenTTS in Python.

- [jamiepine/voicebox](https://seerepo.com/r/jamiepine/voicebox): The open-source AI voice studio. Clone, dictate, create.
- [KittenML/KittenTTS](https://seerepo.com/r/KittenML/KittenTTS): Open-source State-of-the-art TTS model which runs on a CPU 😻 

## What they share and what sets them apart

- In common: FastAPI, Hugging Face, diffusers, s3tokenizer, torchaudio, torch, transformers, librosa
- Only in voicebox: fastmcp, uvicorn, React, @tanstack/react-router, @tauri-apps/api, Vite, Tauri, Tokio, Tailwind CSS, alembic, SQLAlchemy, accelerate, conformer, en-core-web-sm, torchvision, mlx, kokoro, pillow, Pydantic, class-variance-authority, tailwind-merge, Radix UI, React Hook Form, Framer, dnd-kit, wavesurfer.js, motion, Lucide, @hookform/resolvers, Zod, tauri-plugin-dialog, webkit2gtk, hound, symphonia, tauri-apps
- Only in KittenTTS: NVIDIA, nvidia-cudnn-cu12, onnxruntime-gpu, safetensors, einops, onnxruntime, phonemizer

## Side by side

| | voicebox | KittenTTS |
|---|---|---|
| Size | 69,772 lines written, 305 code files | 16,429 lines written, 42 code files |
| Who writes it | 10.5% of its commits signed by AI. With Claude Code, Cursor, Amp, and CodeRabbit | 8.1% of its commits signed by AI. With Claude Code |
| Activity | Last push October 7, 2026, 725 commits, 59,440 stars | Last push October 27, 2026, 74 commits, 16,806 stars |
| Tests | 51 test files. 16.1% of its code files have a test that imports them | 9 test files. 54.8% 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, voicebox or KittenTTS?

voicebox, with 69,772 lines written; KittenTTS has 16,429.

The proof: [jamiepine/voicebox's code at commit 8af7efe](https://github.com/jamiepine/voicebox/tree/8af7efe62fab8d33e2a5dfbedabaa45f68a5184f)

### Which has more GitHub stars, voicebox or KittenTTS?

voicebox, with 59,440 stars; KittenTTS has 16,806.

The proof: [jamiepine/voicebox on GitHub](https://github.com/jamiepine/voicebox)

### Which has more tests, voicebox or KittenTTS?

voicebox, with 51 test files; KittenTTS has 9.

The proof: [jamiepine/voicebox's code at commit 8af7efe](https://github.com/jamiepine/voicebox/tree/8af7efe62fab8d33e2a5dfbedabaa45f68a5184f)

### Which was updated more recently, voicebox or KittenTTS?

KittenTTS: its last push was on October 27, 2026, and voicebox's on October 7, 2026.

The proof: [KittenML/KittenTTS's commits on GitHub](https://github.com/KittenML/KittenTTS/commits)

### Which has more commits signed by AI, voicebox or KittenTTS?

voicebox: an AI signed 10.5% of its commits, with Claude Code, Cursor, Amp, and CodeRabbit; in KittenTTS, 8.1%.

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

## Sources

- jamiepine/voicebox: Read on November 5, 2026, at commit 8af7efe (https://github.com/jamiepine/voicebox/tree/8af7efe62fab8d33e2a5dfbedabaa45f68a5184f)
- KittenML/KittenTTS: Read on November 7, 2026, at commit b9517e3 (https://github.com/KittenML/KittenTTS/tree/b9517e3050adced306219f8bea5f117d87ecfaa7)

## 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.