Your data. Your desk.

Private AI that runs on your Mac.

Chat, write, and work with your documents—locally. No accounts. No subscriptions. Your conversations stay on-device.

Runs locally on Apple Silicon
Stores chats and settings on your device
No telemetry, no tracking, no background network requests

Private by design.
Use it on your terms.

No subscriptions, no logins, no hidden data deals.

Free public beta.

Fast, local models that are practical for everyday work—without the surveillance tradeoffs. BonsAI is designed to be private, reliable, and useful in day-to-day scenarios. Plus, running locally dramatically reduces energy consumption compared to cloud processing.

Use AI on sensitive documents—without uploading them.

Feed the Soil

Drop in PDFs, notes, or text and ask questions safely. BonsAI keeps your content on your machine so you can analyze personal, legal, medical, or work documents with confidence. Disconnect from the internet and it still works.

(Built with local retrieval to ground answers in your files.)

Fig 1: No upload bars. No cloud processing.

Privacy, in plain English.

Here’s exactly what BonsAI does—and just as importantly, what it never does.

What BonsAI never does

× Accounts or logins
× Tracking of how you use the app
× Analytics or usage metrics
× Automatic error reports
× Cloud sync

What BonsAI always does

✓ Uses the internet only when you click Search
✓ Stores chats and settings locally
✓ Runs fully offline by default
✓ Lets you export or delete your data anytime

The Bio-Card

A Living Record

Cloud AI collects your data to personalize your experience—for their benefit. BonsAI keeps it local.

The Bio-Card is where you define who you are. Your background, preferences, and context travel with every conversation—no repetitive introductions required.

Fig 2: The Bio-Card identity layer.

Saplings

Grow Your Personas

Grow distinct Personas for different tasks—a 'Junior Dev' for coding, a 'Plot Architect' for writing. Each Sapling carries its own distinct personality and conversation history, letting you switch contexts without losing focus.

Fig 3: The Saplings personalization engine.

Private web search—only when you ask for it.

Forage Responsibly

When you click Search, BonsAI looks up sources on the web and summarizes what it finds. Search is always optional, clearly labeled, and never runs in the background.

Fig 4: Anonymous search fetching live web data.

A smaller footprint, by design.

Running AI locally on your Mac isn’t just private—it’s sustainable. By eliminating the need for constant data center processing, BonsAI dramatically lowers the energy cost of every interaction.

No data center overhead
Zero network transmission energy
Optimized for Apple Silicon efficiency

Lower Energy

vs. Cloud Models