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Download Hearth for Windows

Free. Windows 10 or 11, 64-bit. No account. Please read the two options below: the current stable release still needs Ollama.

Stable

Current stable, 0.4.16

This is the current stable build. It needs Ollama to run models. If you want Hearth’s built-in engine, use the beta instead. The built-in engine is coming to stable with 0.5.1.

Installer

The usual choice. A standard Windows installer: pick the folder, get a Start menu shortcut, and Hearth can update itself.

Version: 0.4.16
Size: 154.5 MB (162,013,203 bytes)
Platform: Windows 10/11, 64-bit

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Download installer

Portable

One exe you can run from any folder, such as a USB drive. Nothing is installed.

Version: 0.4.16
Size: 154.3 MB (161,744,678 bytes)
Platform: Windows 10/11, 64-bit

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Download portable

Both files come from our release server (controlpanel.live). The buttons above are the current stable build, 0.4.16. See the changelog.

Beta

Hearth 0.4.21 beta: a built-in engine, no Ollama required

This is a pre-release. New installs do not need Ollama. Hearth bundles its own llama.cpp engine (Vulkan and CPU) and downloads a model sized to your graphics card. With 8 GB of video memory that is Qwen3 8B; with no GPU it is Qwen3 4B. Ollama is still supported: it is offered when Hearth finds it, and if you update from an older Hearth you stay on Ollama until you switch in Settings, Engine.

The built-in engine is coming to stable with 0.5.1. Hearth Link (the phone link) still needs Ollama. A CUDA build of the built-in engine is not included yet. These builds have not yet been fully tested on a real Windows PC.

Beta installer Pre-release

The usual choice, for trying the built-in engine. A standard Windows installer with a Start menu shortcut. Hearth can update itself; betas stay on the beta channel until you choose otherwise.

Version: 0.4.21
Size: 172.7 MB (181,079,521 bytes)
Platform: Windows 10/11, 64-bit

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Download beta installer

Beta portable Pre-release

One exe you can run from any folder, such as a USB drive. Nothing is installed. Convenient for trying the beta beside the stable install.

Version: 0.4.21
Size: 172.4 MB (180,810,970 bytes)
Platform: Windows 10/11, 64-bit

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Download beta portable

System requirements

Comfortable on a regular Windows PC

Hearth is tested on an RTX 5060 Ti 8 GB / 16 GB RAM desktop and runs comfortably there. That is a real machine, not a minimum. Shopping for hardware? See recommended machines.

	Minimum	Recommended
Operating system	Windows 10 or 11, 64-bit	Windows 11, 64-bit
Model runner	Ollama for Windows, installed and running (or reachable on your network). The built-in engine is in the 0.4.21 beta, coming to stable with 0.5.1.	Ollama on this PC, or the built-in engine in the beta
Memory (RAM)	8 GB, for small models of about 3 to 4 billion parameters	16 GB or more
Graphics	None required; CPU-only works but is slower. The built-in engine uses Vulkan when a compatible GPU is present.	A GPU with about 8 GB of video memory (Qwen3 8B in the beta)
Disk	About 154.5 MB for Hearth (about 172.7 MB for the beta), plus several GB for each model	An SSD with 20 GB or more free for models
Internet	Not needed to chat. Needed once to download Ollama and models (stable), or a model for the built-in engine (beta), and for any online feature you turn on.

Smaller machines can run smaller models. We have not completed a full test on a real Windows PC yet, so treat the minimum as a floor, not a promise. Windows only: there is no Mac or Linux build today.

Windows may warn you: these builds are unsigned

We have not bought a code-signing certificate yet, so Windows SmartScreen may show “Windows protected your PC” the first time you run Hearth. That is expected for an unsigned app. Choose More info, then Run anyway.

Only do that if you downloaded the file from this page and its SHA-256 matches the one next to that file. When we sign the builds, this note will be replaced by the publisher name.

Trust

How to check the download

Download the file and note its size; it should match the size next to that file on this page.
Open PowerShell in your Downloads folder and run Get-FileHash .\Hearth*.exe -Algorithm SHA256.
Compare the result with the SHA-256 next to the file you downloaded, character for character.

If they differ, delete the file and download it again.

Download buttons go through hearthai.pro/go/, which counts the click anonymously (file and version only) and then sends you straight to the file. If your browser sends Do Not Track or Global Privacy Control, nothing is counted.