The BEST local AI music generator is here! Free & unlimited

TL;DR: ACE-Step 1.5 XL is the new open-source state-of-the-art music generator that beats Suno & Udio on quality, speed and hardware needs—run it free and unlimited on a 12 GB GPU. ## Hands-on demos: what ACE-Step 1.5 XL actually sounds like ### Soulful R&B ballad > all day just to hold you close. > You're the only one who matters the most. > Every moment with you feels like a dream... The vocal is clean, dynamics are full, and the mix feels radio-ready. ### Italian opera Full operatic tenor with orchestral backing—no falters on high notes or language pronunciation. ### Latin trap Spanish lyrics ride an 808-heavy reggaetón beat; pronunciation and rhythm lock tight. ### J-pop Euro-beat Bright female vocal, supersaw leads, gated snares—exactly the hyper-active Tokyo club vibe. ### Children’s song Cheerful ukulele, simple melody, English lyrics about “puddle jumping”. ### Jazz Walking bass, brushed drums, mellow horn section—previous open-source models usually broke here; ACE keeps harmony coherent. ### Bossa nova Nylon-string guitar, soft brush kit, Portuguese-style Portuguese—relaxed café feel. ### Tango instrumental Tagged `instrumental`; bandoneón and strings trade phrases without any vocal bleed. ### Instrumental + choir Prompt: “flute continues, harp enters, choir ends, cello enters”. Each timbre appears on cue; final cello line lands exactly where requested. ## Benchmark snapshot Official numbers claim ACE-Step 1.5 XL tops both Udio and Suno v5 on: - Musical coherence - Naturalness - Overall subjective quality Generation speed: ~120× real-time → a 4-min song finishes in seconds. ## VRAM requirements - Minimum: 12 GB with CPU-offload + int8 - Sweet spot: 20 GB, no offload - “Thinking mode” (extra LLM): 24 GB recommended Community quantizations already <10 GB; 6 GB cards expected to work within weeks. ## Quick local install (Windows shown, macOS/Linux identical) ### 1. Install UV package manager Open PowerShell as admin: ```powershell powershell -c "irm https://astral.sh/uv/install.ps1 | iex" ``` Close window when done. ### 2. Install Git (skip if present) https://git-scm.com → next-next-finish. ### 3. Clone repo In the folder you want: ```bash git clone https://github.com/ace-step/ACE-Step-1.5.git cd ACE-Step-1.5 ``` ### 4. One-command dependency setup ```bash uv sync ``` UV creates a venv and pulls PyTorch (~3 GB). ### 5. Download a model checkpoint Choices: - `base` – training only - `sft` – best quality, 20–50 steps - `turbo` – very fast, 4–8 steps Example (turbo, ~20 GB): ```bash huggingface-cli download ACE-Step/ace-step-1.5-xl-turbo --local-dir checkpoints/turbo ``` ### 6. Launch the web UI ```bash uv run ace_step ``` First boot compiles CUDA kernels; subsequent starts are instant. Open http://127.0.0.1:7860 in your browser. ## Interface walk-through - Language → English (top-right) - Checkpoint path auto-fills to `checkpoints/turbo` - Toggle CPU offload & int8 if you have 12–16 GB - Apple-silicon users tick the Metal option - Click **Initialize Service**; wait for the “Ready” banner. ## Generation tips - Steps: 4–8 for turbo, 20–50 for sft - Prompt structure: style tags at the top, lyrics below - Add `instrumental` to skip vocals - Name instruments or sections (“violin solo”, “choir enters”)—the model obeys That’s it: unlimited, local, SOTA music generation for free. Happy producing! Source: https://www.youtube.com/watch?v=UAlLD5fS7-c