Introducing Hearth

Your AI. Your home.
Nothing leaves it.

Hearth is a quiet little box that runs powerful AI models right in your living room. Ask it anything, dictate, transcribe, search your files — while every byte stays inside your walls.

Pre-order from $249 See how it works
  • No cloud, no account, no telemetry
  • Quieter than a library — under 12 dB(A)
  • OpenAI-compatible API for your own apps
60 TOPSon-device neural engine
11 dB(A)fanless, library quiet
0 bytesleave your home

Why Hearth

Everything you use AI for.
Staying home.

One box serves every screen in the house — phones, laptops, TVs and speakers — with models that run on its own silicon. No subscriptions, no data trail.

Runs fully on-device

Language, speech and vision models execute on Hearth's 60-TOPS neural engine. Unplug the internet and everything still works.

Whisper quiet

Fanless, sealed aluminium shell. At 11 dB(A) you will hear the page turn, not the computer.

Every screen in the house

Phones, laptops and TVs on your network share one Hearth. Private by profile, so everyone's context stays their own.

Private by construction

No accounts, no analytics, no outbound calls. The network tab stays empty — and there's a physical kill switch to prove it.

Knows your world

Point Hearth at folders, notes or recipes and it builds a private index on disk. Answers come with sources you can open.

Fits your stack

An OpenAI-compatible local API, Matter and Thread support, and apps for iOS, Android, macOS and Windows.

Technical specs

Small box. Serious silicon.

Machined from a single block of aluminium, tuned for silence, sized for a bookshelf.

Inside Hearth: the H1 neural engine under a sealed vapour chamber — no fan, no dust, no noise.
Neural engine Hearth H1 · 32-core NPU · 60 TOPS
Memory 32 GB unified LPDDR5X
Storage 512 GB – 2 TB NVMe, expandable via USB-C 4
Models Up to 30 B parameters locally · auto-updates included
Acoustics 11 dB(A) fanless · quieter than rustling leaves
Connectivity Wi-Fi 7 · 2.5 GbE · Thread · Bluetooth 5.4
Privacy hardware Physical network kill switch · mic hardware disconnect
Power USB-C PD 140 W · 9 W typical, 0.4 W standby
Size & weight 180 × 180 × 62 mm · 1.9 kg
In the box Hearth · braided USB-C cable · quick-start card. That's all.

Pricing

Buy it once. It's yours.

No subscription for the hardware, ever. Software updates and new models are included for the life of the device.

Hearth Mini

For a desk or a small flat

$249

  • Runs 8 B-class models
  • 16 GB memory · 512 GB storage
  • 2 simultaneous streams
  • Same silence. 11 dB(A)
Pre-order Mini

Most popular

Hearth

The one for the whole home

$399

  • Runs up to 30 B-class models
  • 32 GB memory · 1 TB storage
  • Whole-home profiles & skills
  • Local file index with sources
  • Physical kill switch
Pre-order Hearth

Hearth Studio

For creators and tinkerers

$749

  • Dual engine · 96 GB memory
  • 2 TB NVMe, user-expandable
  • Image and audio generation
  • Front IO: 2.5 GbE, 4× USB-C
  • Priority support, humans only
Pre-order Studio

Ships spring 2027 · 30-day returns · 3-year warranty on every model.

FAQ

Questions, answered.

Correct. Models, updates and voice recognition all run on the box. It ships with zero outbound destinations, and the OS refuses to phone home by design. If you want to be certain, flip the physical kill switch on the back — the device keeps working with the network fully cut.

Hearth runs open models up to 30 B parameters — comparable to mainstream cloud assistants for everyday questions, writing, summarising and home control. For frontier-level reasoning you can optionally route a request to a cloud provider, but that is off by default and always labelled.

About four minutes. Plug in power, scan the pairing code with your phone, and Hearth joins your Wi-Fi. There is no account to create — your phone talks to the box directly on your network.

No. New open models and software updates are included for the life of the device and install locally. The only optional extra is Hearth Vault, a $49 one-time purchase for encrypted, versioned backups to your own hard drive.

Every Hearth carries a 3-year warranty and a 30-day return window. All data lives on the device in plain, exportable formats — one tap copies everything to a drive, then the factory wipe leaves nothing behind.

Ready when you are.

Pre-orders open spring 2027. Reserve yours — no card required until it ships.

Choose your Hearth