Source: https://seerepo.com/compare/ace-step/ACE-Step-1.5/vs/modelscope/DiffSynth-Studio
Markdown source: https://seerepo.com/compare/ace-step/ACE-Step-1.5/vs/modelscope/DiffSynth-Studio.md
Description: ACE-Step-1.5 and DiffSynth-Studio share 8 technologies: accelerate, torchvision, torch, transformers, einops, peft, safetensors, and ModelScope. Both are written in Python.

# ACE-Step-1.5 vs DiffSynth-Studio

ACE-Step-1.5 and DiffSynth-Studio share 8 technologies: accelerate, torchvision, torch, transformers, einops, peft, safetensors, and ModelScope. Both are written in Python.

- [ace-step/ACE-Step-1.5](https://seerepo.com/r/ace-step/ACE-Step-1.5): The most powerful local music generation model that outperforms almost all commercial alternatives, supporting Mac, AMD, Intel, and CUDA devices.
- [modelscope/DiffSynth-Studio](https://seerepo.com/r/modelscope/DiffSynth-Studio): Enjoy the magic of Diffusion models!

## What they share and what sets them apart

- In common: accelerate, torchvision, torch, transformers, einops, peft, safetensors, ModelScope
- Only in ACE-Step-1.5: FastAPI, diskcache, Lightning, uvicorn, Textual, Gradio, Rich, matplotlib, triton-windows, mlx, vector-quantize-pytorch, flash-attn, torchaudio, torchao, triton, diffusers, mlx-lm, torchcodec, loguru
- Only in DiffSynth-Studio: imageio

## Side by side

| | ACE-Step-1.5 | DiffSynth-Studio |
|---|---|---|
| Size | 126,537 lines written, 410 code files | 139,261 lines written, 308 code files |
| Who writes it | 35.8% of its commits signed by AI. With Claude Code, GitHub Copilot, Cursor, Codex, Jules, and CodeRabbit | 1.6% of its commits signed by AI. With Gemini CLI and Claude Code |
| Activity | Last push November 8, 2026, 1,104 commits, 14,532 stars | Last push November 9, 2026, 989 commits, 13,353 stars |
| Tests | 190 test files. 46.8% of its code files have a test that imports them | 1 test files |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, ACE-Step-1.5 or DiffSynth-Studio?

DiffSynth-Studio, with 139,261 lines written; ACE-Step-1.5 has 126,537.

The proof: [modelscope/DiffSynth-Studio's code at commit fdad57b](https://github.com/modelscope/DiffSynth-Studio/tree/fdad57bd94d3fbac8a72c44920dd0a23b719ebb9)

### Which has more GitHub stars, ACE-Step-1.5 or DiffSynth-Studio?

ACE-Step-1.5, with 14,532 stars; DiffSynth-Studio has 13,353.

The proof: [ace-step/ACE-Step-1.5 on GitHub](https://github.com/ace-step/ACE-Step-1.5)

### Which has more tests, ACE-Step-1.5 or DiffSynth-Studio?

ACE-Step-1.5, with 190 test files; DiffSynth-Studio has 1.

The proof: [ace-step/ACE-Step-1.5's code at commit ca1e85f](https://github.com/ace-step/ACE-Step-1.5/tree/ca1e85fe9430179831e6bc6be790c332190a3866)

### Which was updated more recently, ACE-Step-1.5 or DiffSynth-Studio?

DiffSynth-Studio: its last push was on November 9, 2026, and ACE-Step-1.5's on November 8, 2026.

The proof: [modelscope/DiffSynth-Studio's commits on GitHub](https://github.com/modelscope/DiffSynth-Studio/commits)

### Which has more commits signed by AI, ACE-Step-1.5 or DiffSynth-Studio?

ACE-Step-1.5: an AI signed 35.8% of its commits, with Claude Code, GitHub Copilot, Cursor, Codex, Jules, and CodeRabbit; in DiffSynth-Studio, 1.6%.

The proof: [the commits each tool signed in ace-step/ACE-Step-1.5](https://seerepo.com/r/ace-step/ACE-Step-1.5/ai)

## Sources

- ace-step/ACE-Step-1.5: Read on November 9, 2026, at commit ca1e85f (https://github.com/ace-step/ACE-Step-1.5/tree/ca1e85fe9430179831e6bc6be790c332190a3866)
- modelscope/DiffSynth-Studio: Read on November 10, 2026, at commit fdad57b (https://github.com/modelscope/DiffSynth-Studio/tree/fdad57bd94d3fbac8a72c44920dd0a23b719ebb9)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.