Works offline.
Raptor and other local models run on your computer. Turn off the Wi-Fi and keep working. Nothing leaves unless you choose a cloud model.
AI agents that live on your computer, not in someone else's cloud. With a local model, your work stays on your machine.
Osaurus asks before it changes a file.
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Small. Local. Stays on your machine.
Raptor is Osaurus's own open model, tuned for steady tool use on the computer you already have. It is 3.7 GB, built for 16 GB Macs, and runs on as little as 8 GB, so the work happens on your machine instead of in a data center.
They work under your rules.
Raptor and other local models run on your computer. Turn off the Wi-Fi and keep working. Nothing leaves unless you choose a cloud model.
Give an agent a folder of notes, documents, or references, and it works from your own material.
Agents keep a memory of your conversations on your computer, across local and cloud models.
The Privacy Filter swaps names, emails, and account numbers for placeholders before a message goes to a cloud model, then puts them back in the reply.
It asks before it changes a file. Changes stay in the folder you chose, and you can undo them.
Insights shows everything Osaurus did, including anything that left your computer.
From the community
Oh, what a difference a week makes: I received my M5-Pro 64G MacMini and I am experimenting with 100% private personal AI. I configured the open @OsaurusAI open source macOS app to use only local models and recurring research and digital housekeeping tasks work very well. Set it and forget it, but for a while I imagine I will experiment with my setup.@OsaurusAI is so damn good right now that if they ever add a feature for building apps, a LOT of apps are going to be in trouble. 😂
Seriously, Osaurus is absolutely on fire right now. 🔥A lot of time passed from the first time I tried Osaurus on my Macs. It has improved like crazy! Lot of skills, tools and more polished UI.
What a pleasant surprise! Great job @OsaurusAI 🙌When I teach builders how to keep agent memory and tools on their own machine, I point them at Osaurus first.
It is a native Mac harness for AI agents. You pick a local model or a cloud one, and the memory, tools, sandbox, and identity stay on your Mac. Agents can remember what matters, run code in a sandbox, and speak OpenAI, Anthropic, and Ollama APIs on one local port so the SDKs you already use keep working. MCP works in and out, which matters when I wire Cursor into the same tool surface.
github.com/osaurus-ai/osaurus (opens in a new tab)Privacy, cost, and what runs where. Still looking for an answer? Ask the people who build it in the community.