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ACE Music·Feb 1, 2026·v1.5·open source

ACE-Step 1.5

ACE-Step 1.5 is an open-source music generation model designed to produce high-quality songs efficiently on local hardware. It integrates diffusion-based generation with a Deep Compression AutoEncoder and a lightweight linear transformer, enabling rapid synthesis of up to 4-minute tracks in approximately 20 seconds on an A100 GPU.

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overview

ACE-Step 1.5 is an open-source music generation model designed to produce high-quality songs efficiently on local hardware. It integrates diffusion-based generation with a Deep Compression AutoEncoder and a lightweight linear transformer, enabling rapid synthesis of up to 4-minute tracks in approximately 20 seconds on an A100 GPU.

key features
  • 01Fast music generation: Synthesizes up to 4-minute songs in about 20 seconds on an A100 GPU.
  • 02High-quality output: Achieves superior musical coherence and lyric alignment across melody, harmony, and rhythm metrics.
  • 03Local operation: Runs efficiently on consumer hardware, with generation times around 10 seconds on an RTX 3090.
  • 04User fine-tuning: Supports LoRA fine-tuning, allowing users to train the model with their own music for personalized outputs.
  • 05Versatile capabilities: Offers full song generation, song covers, repainting, stem addition, generative stem splitting, and song completion.