WSM (Weight Space Mods)
WSM is a Python SDK for model weight editing. Access named tensors, change weights, evaluate the result, and save a standalone checkpoint.
Requires Python 3.12 or later. The core package has no third-party runtime dependencies.
pip install wsm
wsm --help
Install the model dependencies to load a local snapshot:
pip install 'wsm[editing]'
from wsm import WeightModel
model = WeightModel.load("/path/to/local/snapshot")
model.weights["model.norm.weight"][:16].mul_(0.95)
result = model.evaluate([{"prompt": "Say hello.", "target": "Hello!"}])
model.save("/path/to/new-checkpoint")
The supported Python API consists of WeightModel and execute_program. Read the project documentation for CLI usage, execution trust, and optional Modal and Spindle trials. Spindle requires a separate pinned source installation documented in the trial guide.
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Release files for wsm 0.1.0
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