Model Merging Python Packages

mergekit

Tools for merging pretrained large language models.

sd-mecha

Executable State Dict Recipes

crdt-merge

Conflict-free merge for DataFrames, JSON, ML models & distributed agents — powered by CRDTs. The first merge library where every operation is mathematically guaranteed to converge.

fusion-bench

FusionBench: A Comprehensive Benchmark/Toolkit of Deep Model Fusion

mergelens

Pre-merge diagnostics for LLM model merging

rho-eval

Behavioral auditing toolkit for LLMs — audit any model across 8 dimensions (factual, toxicity, bias, sycophancy, reasoning, refusal, deception, over-refusal) using teacher-forced confidence probes.

knowledge-fidelity

Compress LLMs while auditing whether they still know truth vs myths. SVD compression + false-belief detection in one toolkit.

mergenetic

Evolutionary model merging for LLMs

terge

An easy-to-use Python library for merging PyTorch models.

zhijian

ZhiJian: A Unifying and Rapidly Deployable Toolbox for Pre-trained Model Reuse