Demon – open-source real-time music diffusion engine, 25Hz local GPU
YO, I’m Ryan, lead author. I’ve been contributing open source generative audio stuff for a while now, audio reactive Comfy nodes, extended ACEstep support in Comfy, etc.. I just opened-sourced a new audio project that I've been working on for a few months and I want to tell y'all about it. WHAT IS IS DEMON: Diffusion Engine for Musical Orchestrated Noise This is StreamDiffusion but with audio instead of images, and ACEStep 1.5 instead of Stable Diffusion. It’s responsive enough that you can play it like an instrument, and remix in near real-time. I also distilled the ACEStep VAE: it’s faster…
Demon – open-source real-time music diffusion engine, 25Hz local GPU launched on May 27, 2026 with 17 votes, #950 of 20,538 launches that month and more than 90% of that year's launches.
In plain words
Demon is an open-source real-time music generation engine that runs locally on GPU at 25Hz, applying diffusion-based audio synthesis similar to image generation tools. Built on ACEStep 1.5 with a distilled VAE for faster processing, it generates music responsively enough to play and remix like an instrument in near real-time. Designed for musicians and developers interested in generative audio, Demon includes hundreds of trained LoRA and DoRA models for sound customization and experimentation.
written from the facts on this page · September 2026
From the sources
DEMON: a streaming diffusion engine for real-time music generation, built on ACE-Step v1.5.
DEMON is a streaming diffusion engine for music, built on ACE-Step v1.5 (2 B turbo and 5 B XL turbo). A ring buffer of in-flight generations, each carrying its own per-slot timestep schedule, is advanced by one batched decoder forward pass per tick; after warmup, at full pipeline depth, every tick produces a finished song latent. Every solver-side parameter (per-frame source preservation, velocity scaling, ODE noise injection, classifier-free guidance, x0-target morphing, channel gain) accepts a scalar or a per-frame curve at the latent's 25 Hz frame resolution, and a shared-mutable-curve lane propagates parameter changes to every in-flight slot on the next tick, independent of pipeline…from daydreamlive.github.io
In the maker’s words, at launch
YO, I’m Ryan, lead author. I’ve been contributing open source generative audio stuff for a while now, audio reactive Comfy nodes, extended ACEstep support in Comfy, etc.. I just opened-sourced a new audio project that I've been working on for a few months and I want to tell y'all about it. WHAT IS IS DEMON: Diffusion…
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