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What One does
A private AI home assistant that runs entirely on your hardware. Your conversations, your devices, your data — none of it leaves your house.
One does everything Alexa and Google Home do — and considerably more. Every function runs on your machine, inside your home, under your control. Not rented to you. Not surveilled. Genuinely yours.
Lights, switches, climate, sensors — all through Home Assistant. Say it or type it. Scenes, schedules, automations built in.
"Hey One" activates from anywhere. Responds through your speakers. Zero cloud latency — there is no cloud to wait for.
Control every PC on your network via sidecar agents. Open apps, run commands, transfer files, take screenshots remotely.
Give One a multi-step goal and it works autonomously until it finishes. Up to 50 steps, live log, with web search.
One builds a 3D knowledge graph from your conversations. Visualised live. Stored locally forever. Click any node to inspect.
Multiple One instances form a private personal cloud. Sync memory, share storage, pool compute — zero external servers.
Every Alexa command passes through Amazon. Every Google query is logged. One puts the control back where it belongs.
| Feature | One | Alexa | Google Home | HA Cloud |
|---|---|---|---|---|
| Runs on your own hardware | ✓ | — | — | — |
| Zero data to Big Tech | ✓ | — | — | — |
| Works without internet | ✓ | — | — | — |
| Full AI conversation | ✓ | — | — | — |
| PC & machine control | ✓ | — | — | — |
| Autonomous goal execution | ✓ | — | — | — |
| Private mesh cloud | ✓ | — | — | — |
| Monthly cost | $0 + API | $4+ | $6+ | $5 |
No cloud accounts. No privacy agreements before you have started. No subscription required to get going.
Every feature tagged with the tier that unlocks it.
Start free, no card needed. One Max is a one-time payment — buy once, own it forever.
No. One Core is free forever on one device with no subscription. You only need One Home, Pro, or Max if you want sidecar agents, goals engine, One Support, mobile PWA, or more than one device.
Typically $5–15/month. Light use stays under $5. You control your own key and billing — we never see it or take any cut.
Yes. Pay $299 once and One is yours permanently — no further payments, all future updates included, unlimited devices. 14-day refund window if it does not work on your setup.
One Pro ($49/mo) gives you everything including unlimited devices and priority support on a rolling subscription. One Max ($299 once) is the same but you pay a single time and own it forever — no more monthly bills. If you're staying long-term, Max pays for itself in under 7 months.
When you enter your key in Settings → Account, One validates it against One Cloud. It rechecks every 24 hours silently. If One Cloud is temporarily unreachable there is a 7-day grace period before features are restricted.
One requires Windows 10 or 11 (64-bit) and Python 3.11. The installer handles Python automatically if it is not found.
Go to the Download page and grab either the ZIP or the setup wizard. The ZIP is the full package — extract to C:\One and run start.bat. The wizard installs Python, packages and creates shortcuts automatically.
Navigate to http://localhost:5050 in any browser. From other devices on your network use http://YOUR-PC-IP:5050.
One needs an Anthropic API key to function. ElevenLabs is optional for voice. All keys are stored locally in settings.json — they never leave your machine.
Visit console.anthropic.com → API Keys → Create key. Typical cost: $5–15/month. Add it in One → Settings → API Keys.
For spoken replies. Visit elevenlabs.io, create an account, copy your API key and Voice ID from the profile page.
For CashClaw income integration. Get a key at hyrveai.com and add it in Settings → API Keys or directly in Goals → CashClaw / HYRVE.
For text-to-3D generation. Free tier at meshy.ai (200 credits). Add in Settings → API Keys or Goals → Text to 3D.
One controls your smart home through Home Assistant. You need a running HA instance on your network.
In One → Settings → Smart Home, enter your HA base URL (e.g. http://192.168.1.x:8123) and a Long-Lived Access Token (generate in HA → Profile → Security).
Lights, switches, climate, sensors, locks. Control by voice, chat, or the UI. Scenes (Movie, Reading, Morning, Cozy, Party, Dinner) send natural-language commands to the Goals engine which translates them into HA actions.
The One website is a single HTML file. You can open it directly from disk or serve it from the One server.
Double-click one_website_final.html in your One folder. It runs entirely in the browser — no server needed.
Place the file in your One folder as website.html. One serves it at http://localhost:5050/website automatically on 4.1+.
Install Tailscale on your server PC. Your One instance — including the website — is accessible from anywhere via the Tailscale IP.
One has three chat modes accessible from the mode bar at the top of the chat page.
Chat — standard conversation, home control, questions.
Think — deep reasoning with Claude Opus. Slower but thorough.
Code — coding-optimised with Claude Sonnet.
Say "Hey One" to activate. One responds aloud via ElevenLabs TTS if configured. Wake word can be changed in Settings → Voice.
Goals let One work autonomously on multi-step tasks without you being present.
Go to Goals → Goals tab, describe what you want in the text area, pick a model, click Run. One executes up to 50 steps and logs each action live.
Connect your HYRVE API key in Goals → CashClaw tab. One picks up jobs from the HYRVE AI marketplace (SEO audits, content, leads), executes them as goals, and handles invoicing via Stripe automatically.
One extracts facts from every conversation and stores them as nodes in a knowledge graph. The graph is visualised as a 3D armillary sphere.
Go to Memory. Drag to rotate, scroll to zoom. Click any node to open the inspector — shows source, weight, created date, and connections. Add memories manually via the input at the top of the right panel.
The most relevant memories are injected into every chat context automatically. One knows what you told it last week.
One Support lets multiple One instances on your local network discover each other and share data.
Go to Machines → One Cloud tab and click Discover. One scans port 5050 across your /24 subnet and lists all running instances.
Click Sync Memory or Sync Todos next to any discovered instance. Data is transferred directly over your LAN — no internet, no external servers.
Distributed goal execution (offload heavy goals to another machine), shared storage pool, and performance pooling are coming in One 4.5.
A sidecar is a lightweight One agent installed on a secondary PC. It lets the main One server control that machine remotely.
On the secondary PC, download the ZIP, run setup.py and select "Sidecar Agent" as the install type. The sidecar starts with Windows and registers itself with your main server automatically.
Run commands, open apps, take screenshots, transfer files, list processes, read clipboard. Access from One → Machines → Sidecars tab.
One has three tiers. Your tier is determined by the license key in Settings → Account.
No key needed. 1 device. Chat, smart home, memory, todos, chrome extension.
Key format: ONE-HOME-XXXX-XXXX. 3 devices. Adds sidecar agents (3 PCs), goals engine, file transfer, One Support, mobile PWA.
Key format: ONE-PRO-XXXX-XXXX. Unlimited devices. Everything in Home plus Text to 3D, CashClaw / HYRVE, unlimited sidecars, priority support, early access.
Key format: ONE-MAX-XXXX-XXXX. Everything in Pro. Lifetime updates, source code access, future product discounts, Founders Discord.
Keys are validated against One Cloud on entry and rechecked every 24 hours. A 7-day grace period applies if One Cloud is temporarily unreachable.
Free forever on One Core. No account needed. Running in five minutes.
C:\One and run start.bat. Requires Python 3.11+ already installed.| OS | Windows 10 / 11 (64-bit) |
| Python | 3.11+ (wizard installs automatically) |
| RAM | 4 GB min · 8 GB recommended |
| Disk | ~350 MB free |
| Network | Local network · internet for API calls |
| API Key | Anthropic — $5–15/month typical |
C:\One, double-click start.bat. Or run setup.py for the full wizard.YOUR-PC-IP:5050.Yes — One runs as a local server. Set it to start automatically with Windows via the installer checkbox or Task Scheduler. Remote access via Tailscale works once your PC is running.
Most users spend $5–15/month. Light use — a few dozen chats a day plus home control — stays well under $10. You control your own key and billing directly with Anthropic.
No. Smart home control requires HA but everything else — chat, memory, goals, machine control, file transfer, 3D generation — works without it.
Yes. Install Tailscale on both your server PC and your remote device. One is accessible via the Tailscale IP exactly like it is on your local network.
If you run One on multiple machines they discover each other on your local network, can sync memory and todos directly, share files faster, and in a future update pool compute. No external servers required.
One Home — cancel anytime. One Max — 14-day full refund if One does not work on your setup. Email support@one-assistant.com.
One is locally hosted. Conversation history, memory, todos, smart home states, and settings never leave your machine unless you explicitly enable cloud sync.
Messages are sent to the Anthropic API using your own key to generate responses. This is subject to Anthropic's Privacy Policy. We have no access to your key or your conversations.
We do not collect analytics, crash reports, or telemetry. We do not show ads.
Contact: privacy@one-assistant.com
By downloading or using One you agree to these terms.
Tiers: One Core is free on 1 device. One Home is $12/month up to 3 devices. One Pro is $49/month, unlimited devices. One Max is $299 one-time, unlimited devices, lifetime license.
API costs: You are responsible for your Anthropic API key and all associated costs.
Refunds: One Home & One Pro — cancel anytime. One Max — 14-day refund window.
Governing law: Malta (EU).