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Download OpenAlchemy Engine

Run llama.cpp, whisper.cpp, and VibeVoice locally. Serve those runtimes back to OpenAlchemy and earn credits when other users dispatch jobs to your GPU.

Windows 10 / 11
Bundled with CUDA-12 llama.cpp + whisper.cpp + VibeVoice runtime packs. ~30 second install.
Download for Windows
Version
v0.5.18
Installer size
510 MB
Format
.msi
Every release is minisign-signed and verified by the updater. View update manifest · Public key 2635A8BB661F3404.

Runtime packs

The app downloads these for you on first launch. If your connection is slow or unreliable, grab them here instead — the server supports resuming, so a download manager can pause and continue.

PackVersionSizeDownload
CUDA 12 llama.cpp (Windows)
llamacpp-cuda12-windows-x86_64
sha256 3691154b9c5ae5f7e3b9a2be8588f37cd32216b38689391f13b3261fe752dff8
0.3.5571 MBpack.zip ↓
VibeVoice 1.5B TTS (CUDA 12, Windows)
vibevoice-cuda12-windows-x86_64
sha256 f5c6abd82fc52233149892428e9cf4ea99f5e75807328bb54e5d90f667cb46cf
0.1.15.11 GBpack.zip ↓
CPU llama.cpp (Windows)
llamacpp-cpu-windows-x86_64
sha256 3358f01b6d78a85abfec2069b05f521580019208e3199a3bc1231b637d6d96bd
0.3.56 MBpack.zip ↓
CPU whisper.cpp (Windows)
whisper-cpu-windows-x86_64
sha256 d1d9afdedeb50458002aeed386187a6cfa5dc286f8e71efc9538af5180b776a5
0.1.00 MBpack.zip ↓
CUDA 12 whisper.cpp (Windows)
whisper-cuda12-windows-x86_64
sha256 c847d9e192d089e3f530cfc86d034c91ceb2a1b36216fc2ba0a23b882022aa62
0.1.7197 MBpack.zip ↓
GPT-SoVITS v2 TTS (CUDA 12, Windows)
gptsovits-cuda12-windows-x86_64
sha256 175d0c022b24ee909120f7c5550447149c38d3be134262b87959effba587c50e
0.1.11.27 GBpack.zip ↓
CosyVoice2 0.5B TTS (CUDA 12, Windows)
cosyvoice2-cuda12-windows-x86_64
sha256 b916e4f601b1bc76d10e33e0f285c642109df5fa7b7ad9c96cf54a7881b61107
1.3.05.30 GBpack.zip ↓
SenseVoice STT (CPU, Windows)
sensevoice-cpu-windows-x86_64
sha256 adc6f3827520a720f88dd0d7ce70615abe5a2b00e6937a2438d5ec76665f6e26
0.1.1248 MBpack.zip ↓
PaddleOCR PP-OCRv5 (CPU, Windows)
paddleocr-cpu-windows-x86_64
sha256 e7e4d9767ddd98001955bd6ed1b938aebf65a06388050971817886b316cfb1ea
0.0.165 MBpack.zip ↓
Installing a pack by hand

Unzip the archive so that pack.json sits at the top of the version folder, then restart the app — it finds packs by scanning this directory, so nothing else is needed:

%LOCALAPPDATA%\com.openalchemy.engine-worker\runtimes\<pack_id>\<version>\

Check the file against the sha256 above before unzipping if the download was interrupted.

What's new in this release

Full release notes →
  • Single-channel runtime panel

    Stable / Beta tabs are gone. One catalog, one list. No more ghost rows, no "Switch to Beta" prompts, no "Show experimental" toggle.

  • Active runtimes is truly global

    The top status row no longer changes when you scroll through pack lists. Display names come from a cross-channel pack metadata cache.

  • Version-scoped pack URLs

    Every runtime pack is fetched from a per-version path so re-publishing never silently overwrites a binary that older clients still reference.

Available under the terms of use. Telemetry and data handling follow the privacy policy.