Source: https://seerepo.com/compare/KittenML/KittenTTS/vs/unslothai/unsloth
Markdown source: https://seerepo.com/compare/KittenML/KittenTTS/vs/unslothai/unsloth.md
Description: KittenTTS and unsloth share 8 technologies: FastAPI, Hugging Face, torch, safetensors, transformers, librosa, diffusers, and einops. Both are written in Python.

# KittenTTS vs unsloth

KittenTTS and unsloth share 8 technologies: FastAPI, Hugging Face, torch, safetensors, transformers, librosa, diffusers, and einops. Both are written in Python.

- [KittenML/KittenTTS](https://seerepo.com/r/KittenML/KittenTTS): Open-source State-of-the-art TTS model which runs on a CPU 😻 
- [unslothai/unsloth](https://seerepo.com/r/unslothai/unsloth): Local UI to run and train LLMs and diffusion models. Supports GGUF, MLX, Qwen3.8, DeepSeek-V4.1, MiniMax-H3, Gemma 4, FLUX and more.

## What they share and what sets them apart

- In common: FastAPI, Hugging Face, torch, safetensors, transformers, librosa, diffusers, einops
- Only in KittenTTS: NVIDIA, nvidia-cudnn-cu12, onnxruntime-gpu, torchaudio, onnxruntime, phonemizer, s3tokenizer
- Only in unsloth: React, OpenAI, uvicorn, Tauri, Tokio, objc2-foundation, objc2-app-kit, anyio, fastmcp, TanStack, Vite, dexie, @tauri-apps/api, @assistant-ui/core, Rich, matplotlib, pyjwt, cryptography, peft, accelerate, datasets, sentence-transformers, tokenizers, @assistant-ui/react, sentencepiece, tiktoken, pillow, av, jinja2, Pydantic, psutil, structlog, gtk, tauri-plugin-dialog, webkit2gtk, webview2-com, objc2-web-kit, tauri-plugin-window-state, tauri-plugin-notification, hmac, openai-whisper, scikit-learn, timm, spandrel, markdown-it-py, mdurl, pymupdf, lxml, pymupdf4llm, python-docx, loguru, log, simplelog, class-variance-authority, Tailwind CSS, PostCSS, @tailwindcss/vite, postcss-selector-parser, tailwind-merge, Radix UI, xyflow, motion, sonner, @streamdown/code, recharts, cmdk, canvas-confetti, react-day-picker, react-resizable-panels, @dagrejs/dagre, @tauri-apps/plugin-notification, Base UI, hugeicons, Lucide, streamdown, mdast-util-from-markdown, mdast-util-gfm, mdast-util-math, micromark-extension-gfm, micromark-extension-math, unified, katex, remend, js-yaml, mammoth, react-pdf, react-qr-code, marked, micromark-util-types, unpdf, @tauri-apps/plugin-process

## Side by side

| | KittenTTS | unsloth |
|---|---|---|
| Size | 16,429 lines written, 42 code files | 3,889,108 lines written, 3,532 code files |
| Who writes it | 8.1% of its commits signed by AI. With Claude Code | 1% of its commits signed by AI. With Claude Code, Gemini CLI, Cursor, Codex, and GitHub Copilot |
| Activity | Last push October 27, 2026, 74 commits, 16,806 stars | Last push November 4, 2026, 12,770 commits, 79,050 stars |
| Tests | 9 test files. 54.8% of its code files have a test that imports them | 5,718 test files. 60.3% 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, KittenTTS or unsloth?

unsloth, with 3,889,108 lines written; KittenTTS has 16,429.

The proof: [unslothai/unsloth's code at commit a1e340b](https://github.com/unslothai/unsloth/tree/a1e340be0f78b5fa6d2538f6ad65bbc1837f83fd)

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

unsloth, with 79,050 stars; KittenTTS has 16,806.

The proof: [unslothai/unsloth on GitHub](https://github.com/unslothai/unsloth)

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

unsloth, with 5,718 test files; KittenTTS has 9.

The proof: [unslothai/unsloth's code at commit a1e340b](https://github.com/unslothai/unsloth/tree/a1e340be0f78b5fa6d2538f6ad65bbc1837f83fd)

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

unsloth: its last push was on November 4, 2026, and KittenTTS's on October 27, 2026.

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

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

KittenTTS: an AI signed 8.1% of its commits, with Claude Code; in unsloth, 1%.

## Sources

- KittenML/KittenTTS: Read on November 7, 2026, at commit b9517e3 (https://github.com/KittenML/KittenTTS/tree/b9517e3050adced306219f8bea5f117d87ecfaa7)
- unslothai/unsloth: Read on November 4, 2026, at commit a1e340b (https://github.com/unslothai/unsloth/tree/a1e340be0f78b5fa6d2538f6ad65bbc1837f83fd)

## 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.