# ACE-Step UI

> ACE-Step UI is a React and Express front end that talks to a locally running ACE-Step 1.5 Gradio API. It adds a Spotify-like library and player, lyrics editor, instrumental mode, covers, repainting, Demucs stem extraction, an AudioMass editor and a music-video maker. You must install ACE-Step 1.5 separately, plus Node.js 18 and FFmpeg; it needs an NVIDIA GPU with 4 GB+ VRAM (12 GB+ with the planner). The README says MIT, but the repo has no licence file, so the licence is unclear. Last push June 2026, two contributors.

- Repository: https://github.com/fspecii/ace-step-ui
- Official docs: https://github.com/fspecii/ace-step-ui#readme
- Checked: 2026-10-16

## What it replaces
- Suno: Full songs with vocals from a prompt or lyrics, Instrumental tracks (Instrumental mode), Covers and restyles of an uploaded song (Cover), Extending or regenerating part of a song (Extend, Splitting a song into vocal and instrument stems (Get Stems) (partial). A front end only; needs a separate ACE-Step 1.5 install to generate anything.

## Facts, with sources

| Question | Status | Answer | Source | Checked |
|---|---|---|---|---|
| Runs on my machine? | Confirmed | Yes, local web app at localhost with a local ACE-Step backend | https://github.com/fspecii/ace-step-ui#-demo | 2026-10-15 |
| Code licence | Unknown | README declares MIT, but its linked LICENSE file is absent; a complete licence grant was not verified as of 2026-10-16 | https://github.com/fspecii/ace-step-ui#-license | 2026-10-16 |
| Model weights licence | Confirmed | MIT (uses ACE-Step 1.5 weights) | https://huggingface.co/ACE-Step/Ace-Step1.5 | 2026-10-15 |
| Commercial use | Unknown | README advertises unrestricted commercial use, but the UI's linked licence file is absent; commercial permission for the complete application remains unverified | https://github.com/fspecii/ace-step-ui#-license | 2026-10-16 |
| Paid services needed? | Confirmed | None required; a free Pexels API key is optional for video backgrounds | https://github.com/fspecii/ace-step-ui#readme | 2026-10-15 |
| Hardware | Confirmed | NVIDIA GPU with 4 GB+ VRAM without the planner LM, 12 GB+ recommended with it | https://github.com/fspecii/ace-step-ui#-requirements | 2026-10-15 |
| Operating systems | Confirmed | Windows, Linux and macOS start scripts | https://github.com/fspecii/ace-step-ui#-quick-start | 2026-10-15 |
| Setup effort | Confirmed | Medium; install ACE-Step 1.5, Node.js 18+ and FFmpeg, then run start-all; or one-click via Pinokio | https://github.com/fspecii/ace-step-ui#-quick-start | 2026-10-15 |

GitHub: 5057 stars, 785 forks, last push 2026-06-27, archived: no.
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Source: RepoQuarry (https://repoquarry.dev/projects/ace-step-ui). Data licence: CC BY 4.0. Quotes are from project documentation and belong to their authors.