Hugging Face Hub migrates from Git LFS to Xet storage backend with default Xet for new users

AI Impact Summary

Hugging Face Hub has completed a large-scale migration from Git LFS to the Xet storage backend, with the Git LFS Bridge and a content-addressed store (CAS) backed by S3 handling the data flow. The rollout is designed to be non-disruptive, supporting both LFS and Xet files during coexistence and enabling multi-PB migrations across hundreds of thousands of repos. This establishes a scalable storage foundation while shifting operational risk to the Xet/CAS/S3 stack and the orchestration layer that coordinates background migrations. The move to default Xet for new users signals a long-term consolidation, making storage reliability and throughput a primary focus for ongoing platform health.