# acestep.cpp

> acestep.cpp reimplements ACE-Step 1.5 in C++ on GGML and serves a browser UI and HTTP API on your machine. It loads GGUF quantisations (a default set is about 7.7 GB at Q8) and runs on CPU, NVIDIA CUDA, Apple Metal or AMD/Intel via Vulkan. It supports text-to-music, cover, repaint and LoRA adapters. Code and GGUF weights are MIT. You build it from source; Windows binaries are on a temporary download page until CI is set up. No RAM or VRAM figures are given. Several desktop apps (ACE-Step Studio, HOT-Step) are built on it.

- Repository: https://github.com/ServeurpersoCom/acestep.cpp
- Official docs: https://github.com/ServeurpersoCom/acestep.cpp#readme
- Checked: 2026-10-15

## What it replaces
- Suno: Full songs with vocals from a prompt or lyrics, Covers and restyles of an uploaded song (Cover), Extending or regenerating part of a song (Extend (partial). Songs, covers and repaints from a local web UI; no built-in stem tool documented.

## Facts, with sources

| Question | Status | Answer | Source | Checked |
|---|---|---|---|---|
| Runs on my machine? | Confirmed | Yes, local server with a browser UI | https://github.com/ServeurpersoCom/acestep.cpp#readme | 2026-10-15 |
| Code licence | Confirmed | MIT | https://github.com/ServeurpersoCom/acestep.cpp/blob/master/LICENSE | 2026-10-15 |
| Model weights licence | Confirmed | MIT (GGUF conversions of ACE-Step 1.5) | https://huggingface.co/Serveurperso/ACE-Step-1.5-GGUF | 2026-10-15 |
| Commercial use | Confirmed | Yes, MIT code and weights | https://huggingface.co/Serveurperso/ACE-Step-1.5-GGUF | 2026-10-15 |
| Paid services needed? | Confirmed | None required | https://github.com/ServeurpersoCom/acestep.cpp#readme | 2026-10-15 |
| Hardware | Partial | Runs on CPU or GPU; default Q8 model set is about 7.7 GB on disk; no RAM or VRAM figures | https://github.com/ServeurpersoCom/acestep.cpp#download-models | 2026-10-15 |
| Operating systems | Confirmed | Windows, Linux and macOS (Metal) | https://github.com/ServeurpersoCom/acestep.cpp#build | 2026-10-15 |
| Setup effort | Confirmed | Hard; build from source with CMake scripts (CUDA/Vulkan SDK optional); unofficial Windows binaries | https://github.com/ServeurpersoCom/acestep.cpp#build | 2026-10-15 |

GitHub: 437 stars, 104 forks, last push 2026-10-14, archived: no.
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Source: RepoQuarry (https://repoquarry.dev/projects/acestep-cpp). Data licence: CC BY 4.0. Quotes are from project documentation and belong to their authors.