Promptus – local AI for image, video, music and 3D (no cloud, one-time purchase)

We've spent two years building Promptus — a desktop app that runs AI creative workflows locally on Windows and Mac using ComfyUI as the backend.

What it does:

- 150+ pre-built workflows across image, video, music, text, and 3D
- 50+ quantized open-source models: Flux, Wan 2.1, AceStep, Qwen3, LTX-Video
- Runs fully offline after model download (8–16GB VRAM depending on task)
- GGUF and EXL2 quantization to fit professional-quality models on consumer GPUs - No subscription, no cloud dependency, no data leaving the machine

We're a UK team. We launch on Kickstarter on May 4th: Promptus Local AI

Happy to answer questions about the architecture, model selection, or quantization approach.