See what actually changed between models.
Stream any two HuggingFace checkpoints, compare them tensor by tensor, and get a real diff report instead of vague release notes and marketing claims.
The missing git diff for model weights.
Today, model updates ship as giant blobs with fuzzy changelogs. Weightscope makes fine-tunes inspectable, comparable, and measurable.
Model laundering
Spot rebranded or near-identical uploads before they get passed off as something new.
No quality signal
See whether a model barely changed or was deeply fine-tuned across its tensors.
Wasted bandwidth
Expose redundant weight shipping and open the door to smarter deduplication.
CLI-first, fast to test.
Install the open-source CLI, point it at two model IDs, and generate a markdown diff report in seconds.
Stream any two model IDs straight from the Hub — no downloads, no setup.
Output drops into PRs, model cards, or release notes — no extra tooling needed.
See whether 0.1% of weights moved or 90% — no more guessing from a model card.
Per-tensor max delta + sparsity tells you if a "fine-tune" is actually a full retrain.
Simple pricing, cleaner presentation.
For open-source exploration and public model diffs.
- Open-source CLI & library
- Public diffs on HF
- HuggingFace Space (≤ 2 GB)
- Commercial use OK
For private checkpoint comparisons and hosted history.
- Private diffs on your checkpoints
- Hosted history & share links
- No model size limit
- Email support
For collaborative model analysis across an org.
- Up to 5 seats
- Shared workspace
- SSO (Google, Okta)
- Audit log + Slack support
Diff your first model in 60 seconds.
pip install weightscope then point it at any two HuggingFace checkpoints.