ColossalAI vs DiffSynth-Studio

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

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What they share and what sets them apart

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
ColossalAI317,403 lines written974 code files
DiffSynth-Studio139,261 lines written308 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
ColossalAI0.3% of its commits signed by AIWith Codex and Claude Code
DiffSynth-Studio1.6% of its commits signed by AIWith Gemini CLI and Claude Code
ActivityFrom GitHub and its history, on the day SeeRepo read it.
ColossalAILast push November 6, 20263,887 commits41,430 stars
DiffSynth-StudioLast push November 9, 2026989 commits13,353 stars
TestsThe files that test the code, and the share of code files a test imports.
ColossalAI505 test files1.1% of its code files have a test that imports them
DiffSynth-Studio1 test file

Frequently asked questions

Which is bigger, ColossalAI or DiffSynth-Studio?
ColossalAI, with 317,403 lines written; DiffSynth-Studio has 139,261.

The proof: hpcaitech/ColossalAI's code at commit da8f5c2

Which has more GitHub stars, ColossalAI or DiffSynth-Studio?
ColossalAI, with 41,430 stars; DiffSynth-Studio has 13,353.

The proof: hpcaitech/ColossalAI on GitHub

Which has more tests, ColossalAI or DiffSynth-Studio?
ColossalAI, with 505 test files; DiffSynth-Studio has 1.

The proof: hpcaitech/ColossalAI's code at commit da8f5c2

Which was updated more recently, ColossalAI or DiffSynth-Studio?
DiffSynth-Studio: its last push was on November 9, 2026, and ColossalAI's on November 6, 2026.

The proof: modelscope/DiffSynth-Studio's commits on GitHub

Which has more commits signed by AI, ColossalAI or DiffSynth-Studio?
DiffSynth-Studio: an AI signed 1.6% of its commits, with Gemini CLI and Claude Code; in ColossalAI, 0.3%.

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