An always-on AI assistant that runs entirely on your Mac.
ChatGPT-level intelligence. Your data never leaves your machine.
Help me write a Python script to organize my Downloads folder
The user wants a file organizer. I'll sort by extension into subfolders (Images, Documents, Videos...).
Here's a Python script that sorts your Downloads by file type:
import os, shutil
from pathlib import Path
categories = {
"Images": [".jpg", ".png", ".gif"],
"Documents": [".pdf", ".docx"],
"Videos": [".mp4", ".mov"],
}
downloads = Path.home() / "Downloads"
for file in downloads.iterdir():
...✓ Generated locally on your M4 Pro · No data sent anywhere
Every other AI assistant sends your data to the cloud. Mochi doesn't.
Mochi detects your chip and RAM, then picks the optimal AI — Fast, Balanced, or Smart. No nerdy config screens. It just works.
Built from the ground up for Apple Silicon. Runs directly on Metal GPU. Measurably faster than Electron or Python wrappers.
Zero cloud. Zero tracking. Zero data collection. Your prompts and responses never leave your Mac. We don't even have servers to leak from.
Watch Mochi's reasoning process in real-time with collapsible thinking blocks. See how it arrives at answers, not just the answer itself.
Syntax-highlighted code with one-click copy buttons. Markdown rendering that looks as good as ChatGPT. Full conversation history with search.
Set your name, occupation, and custom instructions. Mochi remembers who you are and tailors every response — all stored locally, of course.
Press ⌥Space from any app to summon the floating chat bar. Ask a question, get an answer, and get back to work. No context switching.
Chat with your Mac's AI from your phone via secure tunnel. Your Mac does the thinking, your phone gets the answers. Pro
Queue tasks that run overnight. "Summarize my downloads." "Draft email responses." Wake up to completed work. Pro
Mochi auto-selects the best model for your hardware. From lightweight 3.8B to frontier 122B — every Mac is covered.
All models are optimized 4-bit quantized format from mlx-community. One-click download with progress tracking.
"Explain this regex." "Write unit tests for this function." "Debug this error." Code assistance that never leaks your proprietary codebase.
"Rewrite this paragraph for clarity." "Brainstorm blog post titles." "Help me outline Chapter 3." Your creative work stays yours.
"Summarize this contract." "Explain this lab report." "Draft a client email." Handle sensitive documents without worrying about data breaches.
"Explain quantum entanglement simply." "Help me study for my exam." "Check my essay." A private study buddy available 24/7 — even without WiFi.
Download the .dmg. Drag to Applications. That's it — under 50MB.
Mochi detects your chip and RAM, then downloads the perfect AI model with a progress bar.
Press ⌥Space from any app. Ask anything. 100% local, 100% private, 100% free.
| Mochi | ChatGPT | Claude | Perplexity PC | Ollama | |
|---|---|---|---|---|---|
| 100% local inference | ✓ | ✗ | ✗ | ✗ | ✓ |
| GUI chat app | ✓ | ✓ | ✓ | ✓ | ✗ |
| Auto model selection | ✓ | ✗ | ✗ | ✗ | ✗ |
| Works offline | ✓ | ✗ | ✗ | ✗ | ✓ |
| Optimized for Apple Silicon | ✓ | ✗ | ✗ | ✗ | ~ |
| Thinking display | ✓ | ~ | ✓ | ✗ | ✗ |
| Native macOS app | ✓ | ✗ | ✗ | ✗ | ✗ |
| Personalization | ✓ | ✓ | ~ | ✗ | ✗ |
| Price | Free | $20/mo | $20/mo | $200/mo | Free |
Free tier that's genuinely useful. No tricks, no trial limits, no bait-and-switch.
That's 4x cheaper than ChatGPT Plus and 40x cheaper than Perplexity Personal Computer.
Mochi is built from the ground up for Apple Silicon (M1-M5). It runs AI models directly on your Mac's Metal GPU with zero-copy unified memory — meaning it's as fast as physically possible on your hardware. No Python, no Docker, no terminal setup.
Any Apple Silicon Mac (M1 or newer) with at least 8GB of RAM. More RAM = bigger, smarter models. An 8GB MacBook Air runs Phi-4 Mini brilliantly. A 48GB Mac Studio can run models that rival GPT-4. Mochi auto-detects your hardware and picks the best model for you.
Yes — unlimited local chat, forever, no credit card required. The free tier includes 15+ models, full chat history, personalization, thinking display, and code block rendering. Pro ($5/mo) adds background agents, knowledge base, iPhone access, and cloud GPU fallback, but the core experience is genuinely free.
ChatGPT and Claude are cloud services — your data goes to their servers, and you need internet. Mochi runs 100% on your Mac. The tradeoff: cloud models are generally larger. But Mochi's top models (Qwen 3.5 32B, Llama 3.3 70B) rival GPT-4 quality for most tasks, and you never pay $20/month.
Ollama is a great CLI tool for running models, but Mochi is built from the ground up for Apple Silicon — meaning it's significantly faster at inference on the same hardware. On top of the raw performance edge, Mochi adds: a beautiful native GUI, automatic model selection, chat history, personalization, thinking display, ⌥Space instant access, and zero terminal required. Think of it as "Ollama for humans" — but faster.
No. Mochi has zero telemetry by default. We offer an optional (opt-in, off by default) anonymous usage survey — just aggregate counts like "X users used agents this week" with no user IDs or device identifiers. Your chats, documents, and prompts never leave your SSD.
Be the first to try the most private AI assistant for Mac. Join hundreds of Mac users who refuse to send their data to the cloud.
Free forever. No credit card. No spam. We'll email once when Mochi is ready.
Check out Cider — the power-user version of Mochi with CLI, REST API, MCP server, and agent scripting. Same engine, developer-first interface.