Osaurus
Run private, offline AI agents on your Mac — free, MIT-licensed local AI
Osaurus is the most complete free, open-source option we've seen for macOS users who want private, local AI with real agent capability. It's genuinely free, MIT-licensed, and packs features you'd expect from paid tools. But it's strictly for Apple Silicon Macs running macOS 15.5+ — if you're on Windows, Linux, or an Intel Mac, it's a non-starter.
Verified 1d ago · liveness 75/100 · cite: rightaichoice.com/tools/osaurus
- Developers building local-first AI agents on macOS
- Privacy-conscious Mac power users who want full data control
- Tinkerers who enjoy owning and modifying their AI stack
- Users needing autonomous tool-using agents with voice control
- Windows or Linux users (macOS-only)
- Users without Apple Silicon Macs (Intel not supported)
- Those who prefer no-code AI tools or minimal setup
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Skip Osaurus if you're on Windows, Linux, or an Intel Mac, or if you prefer a no-code AI tool with minimal setup and aren't comfortable managing local models and agents.
Cloud model usage (ChatGPT, Claude, Gemini) may incur costs—you'll need to supply your own API keys and are subject to their pricing.
Osaurus is completely free and MIT-licensed, with no subscription, usage caps, or billing—unlike paid alternatives like Ollama (free but less agentic) or cloud-based assistants. It's ideal for individual developers and privacy-focused Mac users who want full control without ongoing costs.
In short
Osaurus — Run private, offline AI agents on your Mac — free, MIT-licensed local AI. Best for Developers building local-first AI agents on macOS, Privacy-conscious Mac power users who want full data control, Tinkerers who enjoy owning and modifying their AI stack. Free to use.
What's new in Osaurus
Checked yesterdayAcross the latest 5 updates: 4 feature updates and 1 launch.
Osaurus 0.24.3
Adds Claude Code CLI integration, memory safety improvements, and vMLX pins for better performance and stability.
Osaurus 0.24.2
Fixes vmlx-swift crash and end-of-output hang; simplifies tools and plugins in settings.
Osaurus 0.24.1
Revamped settings, fixes permissions view and macOS 15 crash.
Osaurus 0.24.0
Introduces Orchestrator, credit-based pricing, and swap-pressure warning; lets agents write knowledge with approval.
AppleScript-8B & AppleScript-16B-A4B: Small Models That Actually Drive Your Mac
Releases two open, on-device models that turn plain-English requests into reliable macOS automation.
What people actually say about Osaurus — is it worth it?
We ran a structured research pass across product reviews, community discussions, and post-purchase forum threads to surface the patterns vendors won't publish themselves. Below: the recurring strengths, the hidden costs people mention most, and the cohort that consistently regrets adopting this tool.
39 mentions across 4 sources (Hacker News, YouTube, GitHub, Lemmy) · researched Aug 27, 2026.
- +Truly offline — no telemetry, no data leaving your Mac
- +Runs 30% faster than Ollama on Apple Silicon (GitHub/HN)
- +Single shared memory across local and cloud models
- +Agent loop with folder watchers, voice control, parallel jobs
- +Ollama-compatible — drop-in for your existing Ollama workflows
- −Apple Silicon only — no Windows, Linux, or Intel Mac
- −Long generations (1000+ words) can hang or spin forever
- −Memory leak issues when used as a server backend
- −Tool permissions granted but plugins still don't fire
- −No official support channel; relies on GitHub issues
- • You pay for your own compute — Mac hardware with enough RAM for larger models
- • Cloud models (ChatGPT, Claude, Gemini) require their own API keys and usage costs
- • Time investment to set up and debug agent workflows
Viability Score
How well maintained and how widely used is Osaurus? Built from what the vendor actually publishes (docs, changelog, tutorials, integrations, pricing), whether the site is live, and how much real users discuss it. How we calculate this
Last calculated: September 2026
How we score →Key Features
- Run local open models via Ollama, MLX, or LM Studio
- Connect ChatGPT, Claude, or Gemini for cloud tasks
- Shared memory across local and cloud models
- Autonomous agents with voice control
- Folder watchers for automated file processing
- Parallel job execution
- Browser plugin support
- Fully offline operation
- Open source (MIT license)
- AppleScript-8B and AppleScript-16B-A4B for macOS automation
- Native Swift app for Apple Silicon
- No account required
- No telemetry or data collection
- Homebrew installable
- Projects support for grouped chats with shared instructions (v0.23.0)
About Osaurus
Osaurus is a native macOS app for Apple Silicon that runs open AI models entirely on your machine—your data never leaves your Mac. It's free, MIT-licensed, and works offline, with no telemetry and no servers in the loop. You can connect Ollama, MLX, or LM Studio in one click, and reach for ChatGPT, Claude, or Gemini only when a task demands it, all while keeping a single shared memory across both local and cloud models. Osaurus isn't just a chat app. Drop in folders, assign tasks, and build autonomous agents that can read, write, and execute on your Mac. These agents support voice control, folder watchers, browser plugins, and parallel job execution, so they can run while you sleep. Everything runs on your M-series chip, delivering results in milliseconds without an internet connection. The app is built in Swift for Apple Silicon and installs via Homebrew or a simple DMG. It's open source under MIT, so you can read, fork, and ship with it. Recent updates, like version 0.23.0, add projects support to group chats with shared instructions, knowledge, and memory, plus reasoning effort control for zai-glm models on Mistral. Version 0.22.21 introduced follow-up question suggestions, full-screen image preview, and individual message deletion. Osaurus also includes two open, on-device models—AppleScript-8B and AppleScript-16B-A4B—that convert plain English into reliable macOS automation commands. Compared to other local AI runners like Ollama, Osaurus adds agent capabilities, shared memory, and cloud model bridging, making it more than a model launcher—it's a full local AI workspace for Mac power users who want privacy and control.
Behind the Verdict
Osaurus stands out in the local AI space because it's not just another model launcher. It's a full agentic workspace that lets you build autonomous agents with voice control, folder watchers, browser plugins, and parallel job execution. The shared memory across local and cloud models is a clever touch—you can start private and offline, then hand off to ChatGPT, Claude, or Gemini when a task needs more horsepower, and the app remembers context across both. The recently added Orchestrator (v0.24.0) is a significant step up: it gives you a dedicated settings tab, identity, and launch polish, plus default-agent declarative config and delegation. This means you can set up complex workflows where agents hand off tasks to each other, all running locally. On the downside, it's macOS-only (Apple Silicon, macOS 15.5+), so it's not for Windows, Linux, or Intel Mac users. And because it runs models locally, performance depends heavily on your hardware—if you have a base M1 MacBook Air, you'll see slower inference than on an M5 Max. The current release (v0.24.3) is very fresh, and the changelog shows active work on memory safety, MLX pinning, and bug fixes. One thing to note: the credit system UI recently migrated from dollars to credits (v0.24.0). This is interesting given that the app is 'free' — likely the credit system is for cloud model usage or optional paid features, but the changelog doesn't clarify. For now, it's safe to say the core local experience is free, but watch for future pricing changes. Overall, if you're a Mac power user who values privacy and wants to tinker with local AI agents, Osaurus is one of the best free options out there. If you need cross-platform or enterprise support, look elsewhere (e.g., Ollama for multi-platform local models, or GPT4All).
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Real-world workflow fit
Concrete scenarios for the personas Osaurus actually fits — and what changes day-one when you adopt it.
Build a local coding agent that monitors a folder, writes tests for new files, and runs them automatically.
Outcome: You get a hands-free agent that catches issues early, running entirely on your Mac with no data leaving your machine.
Process sensitive documents offline using a local model while keeping a shared memory across cloud queries for synthesis.
Outcome: You maintain full confidentiality for sensitive data while still leveraging cloud models when needed, all with unified context.
Set up a voice-controlled agent that organizes your Downloads folder and executes recurring AppleScript tasks.
Outcome: You automate tedious file management and system tasks with natural language commands, running in parallel while you work.
Use Cases
- Create an autonomous coding agent that writes and tests scripts on your Mac.
- Run a personal knowledge assistant with persistent memory that remembers your work.
- Automate file organization and folder monitoring with natural language commands.
- Build a voice-controlled agent that executes local tools and scripts.
- Use AppleScript models to turn plain English into macOS automation without coding.
- Run AI entirely offline for sensitive data or travel.
- Import existing conversations from ChatGPT, Claude, Grok, or Gemini to continue locally.
- Use the Orchestrator to delegate tasks between multiple agents.
Models Under the Hood
as of 2026-09-01
Limitations
- Osaurus is a native macOS app requiring Apple Silicon and macOS 15.5+; it is not available for Intel Macs or other operating systems.
- The quality and speed of local AI depends heavily on your Mac's hardware (chip, RAM, GPU), and complex tasks may benefit from adding cloud models like ChatGPT, Claude, or Gemini, which require sending data to those providers.
as of 2026-09-01
Verification history
We have re-verified Osaurus 7 times since . Each pass re-reads the vendor's own pages and re-checks every listed field against that evidence; passes where nothing had changed are marked as such.
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
Showing the 6 most recent of 7 verification passes.
Free to cite with attribution — this page re-verifies continuously.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Plans compared
For each published Osaurus tier: who it actually fits, and what it adds vs. the previous tier. Cross-reference the cost calculator above for projected annual outlay.
Free
$0/mo
Ideal for
Individual developers and privacy-focused Mac users who want complete control without any cost.
What this tier adds
Starting tier: free forever, MIT-licensed, no subscription, usage caps, or billing. Includes all core features.
Where the pricing makes sense
The company stage and team size where Osaurus's pricing actually pencils out — and where peers do it cheaper.
Osaurus is completely free and MIT-licensed, with no subscription, usage caps, or billing—unlike paid alternatives like Ollama (free but less agentic) or cloud-based assistants. It's ideal for individual developers and privacy-focused Mac users who want full control without ongoing costs.
Setup time & first value
How long it actually takes to get something useful out of Osaurus — broken out by persona, not the marketing-page minute.
Most users can download, install, and start chatting with a local model in under 15 minutes. Setting up agents and folder watchers may take an extra 30 minutes to an hour, depending on complexity.
Switching to or from Osaurus
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
- →From ChatGPT: Export your conversations and import them into Osaurus to continue locally with shared memory.
- ↗To Ollama: If you need cross-platform support, you can run the same open models via Ollama, though you'll lose Osaurus's agent features.
Integrations
Resources & Guides
Tutorials & Learning
Official links
Tools that pair well with Osaurus
Common stack mates teams adopt alongside Osaurus, with the specific reason each pairing earns its keep.
Featured Head-to-Head Comparisons
Osaurus vs Locus Robotics
Locus Robotics and Osaurus serve entirely different markets. Locus is a warehouse robotics platform for high-volume physical fulfillment, while Osaurus is a local AI agent toolkit for macOS developers. Choose based on your domain: if you run a warehouse needing flexible automation, Locus is the proven choice; if you're a developer wanting private, autonomous AI on your Mac, Osaurus is free and powerful.
Osaurus vs Truleo
Truleo and Osaurus are incomparable tools serving entirely different domains. Truleo is a paid, specialized intelligence platform for law enforcement agencies needing to connect siloed data sources and automate lead generation. Osaurus is a free, open-source local AI agent framework for macOS developers who prioritize privacy and offline capability. Your choice depends entirely on whether you are a police department or a privacy-conscious Mac power user.
Osaurus vs Presto Voice
Buy Presto Voice if you operate a QSR chain and need to boost drive-thru revenue via AI—its upselling engine and high non-intervention rate are proven. Choose Osaurus if you're a macOS developer wanting to run local AI agents with full privacy and control. These tools serve entirely different needs; the choice is dictated by your environment (restaurant vs. desktop) and your budget (enterprise vs. free).
Alternatives to Osaurus
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