optimizers · google

Shampoo

Full-matrix adaptive preconditioning via Kronecker-factored second-moment statistics.

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What this registry has checked

Quarantine. We hold the publisher’s own published hash for these weights and have recorded it against this entry. We have not downloaded and hashed the weights ourselves, so the hash is the publisher’s claim, not our measurement.

Weight file SHA-256	22b6211706ca03f5c666ef23123bde12fa9f39dabd08585855a1967b1ce94a9f

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What is recorded

Publisher	google
Origin	United States
Licence	Apache-2.0
Pulls recorded here	16,001

Elsewhere in the registry

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Registry record as of 2026-06-06. Identity, licence and parameter count are properties of a release and do not move; tier can, and the verify link above re-checks it against the live registry rather than this page.