Osaurus

Own your AI: agents that run 100% locally on your Mac

Check the priceWe couldn't find a free tier on osaurus.ai on our last check. Confirm the current pricing on the tool's own site before relying on any free tier listed below.

What it is

Osaurus is a free, open-source macOS app that runs AI agents entirely on your Mac, with persistent memory, autonomous execution, and no data sent to a server unless you choose a cloud provider yourself. It's built natively in Swift for Apple Silicon, MIT licensed, and has crossed 5,000+ GitHub stars since launch, making it one of the more credible local-first alternatives to cloud AI agent platforms.

Running AI agents on sensitive or private data without a cloud dependencyDevelopers who want a local, scriptable agent harness with MCP supportMac users testing local open models like Gemma, Qwen, or LlamaPrivacy-conscious users who still want the option to call cloud models when needed

Price: Free; free tier available
Free tier: Yes; no card required
Platforms: 2; macOS · API

What you get free vs paid

Verdict

Where it wins and loses

Pros

Completely free and MIT licensed, with no account or subscription required to run it
Fully offline by default; nothing leaves your Mac unless you explicitly connect a cloud provider
Native Swift app on Apple Silicon, not an Electron wrapper, so it stays lightweight
Open source means you can actually verify what it does with your data instead of taking a privacy claim on faith
Supports local models (Gemma, Qwen, GPT-OSS, Llama via MLX) and cloud providers side by side

Cons

Mac-only, and several features require Apple Silicon plus recent macOS versions (macOS 26 for the sandboxed code execution)
Local model quality depends on your hardware; heavier models need a Mac with real memory headroom
Newer project with a fast-changing feature set, so docs and plugins are still catching up in places

A genuinely useful pick for Mac users who want AI agents without sending every prompt to someone else's server, as long as you're comfortable running local models or bringing your own cloud API keys.
— QuestLoops verdict

Capabilities

Core features

Fully offline local inference via MLX on Apple Silicon
Persistent agent memory across sessions with automatic pruning
Autonomous agent loop with file, search, and git tools
Sandboxed code execution in an isolated Linux VM
Cryptographic per-agent identity and scoped access keys
Drop-in OpenAI, Anthropic, and Ollama-compatible API endpoints
Full MCP server and client support
Connects to OpenAI, Anthropic, Gemini, Grok, and other cloud providers when you want extra power

AI stacks & blueprints

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Common questions

Osaurus · 2 questions

Is Osaurus free?

Osaurus offers a free tier you can use without paying. Browse QuestLoops for verified ways to get more out of it for free.

What are the best alternatives to Osaurus?

You can compare Osaurus side-by-side with similar Developer Tools on QuestLoops to weigh free-tier limits, pricing, and tradeoffs before deciding.

Community workarounds

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