[v1.10.0] Instant file copy and new Kernel repo type
This release introduces server-side file copy operations that let you move data between Hugging Face storage without downloading and re-uploading. You can now copy files from one Bucket to another, from a repository (model, dataset, or Space) to a Bucket, or between Buckets — all without bandwidth costs. Files tracked with Xet are copied directly by hash (no data transfer), while small text files not tracked with Xet are automatically downloaded and re-uploaded.
>>> from huggingface_hub import copy_files
# Bucket to bucket (same or different bucket)
>>> copy_files(
... "hf://buckets/username/source-bucket/checkpoints/model.safetensors",
... "hf://buckets/username/destination-bucket/archive/model.safetensors",
... )
# Repo to bucket
>>> copy_files(
... "hf://datasets/username/my-dataset/processed/",
... "hf://buckets/username/my-bucket/datasets/processed/",
... )
The same capability is available in the CLI:
# Bucket to bucket
>>> hf buckets cp hf://buckets/username/source-bucket/logs/ hf://buckets/username/archives/logs/
# Repo to bucket
>>> hf buckets cp hf://datasets/username/my-dataset/data/train/ hf://buckets/username/my-bucket/datasets/train/Note that copying files from a Bucket to a Repository is not yet supported.
📚 Documentation: Buckets guide
HfApi.copy_files method to copy files remotely and update 'hf buckets cp' by @Wauplin in #3874[!TIP] For building, publishing, and using kernel repos, please use the dedicated
kernelspackage.
The Hub now supports a new kernel repository type for hosting compute kernels. This release adds first-class (but explicitly limited) support for interacting with kernel repos via the Python API. Only a subset of methods are officially supported: kernel_info, hf_hub_download, snapshot_download, list_repo_refs, list_repo_files, and list_repo_tree. Creation and deletion are also supported but restricted to a small subset of allowed users and organizations on the Hub.
>>> from huggingface_hub import kernel_info
>>> kernel_info("kernels-community/yoso")
KernelInfo(id='kernels-community/yoso', author='kernels-community', downloads=0, gated=False, last_modified=datetime.datetime(2026, 4, 3, 22, 27, 25, tzinfo=datetime.timezone.utc), likes=0, private=False)
📚 Documentation: Repository guide
tqdm_class silently broken in non-TTY environments by @hanouticelina in #4056Fetched April 9, 2026