LeRobot

LeRobot is the default robot policy training framework. It supports ACT, Diffusion Policy, and SmolVLA (and additional VLAs / world models in 0.6.0).

Use it as the data standard and policy interface layer, not as a managed-service competitor to Hugging Face.

Supported versions

Version	Role	Image tag	Notes
0.5.1	Default	npa-lerobot:cuda13-b300-0.5.1-sm80-sm90-sm100-sm103-sm120-20260803T034152Z	Accepted public default; the plain 0.5.1 alias is historical
0.6.0	Additional package support	Operator-built image required	No accepted public image pin/digest; lean extras (training,evaluation,pusht,libero,diffusion,smolvla); --eval_freq → --env_eval_freq

Select the package with --lerobot-version. For serverless training on 0.6.0, supply a validated operator image through train --image; version selection alone does not publish an image. VM deployment installs the selected package and has no --image option. The anonymous 2026-09-05 audit returned 404 MANIFEST_UNKNOWN for the official npa-lerobot:0.6.0 tag. It is outside the current public release plan and must not be treated as an accepted release.

Canonical manifest: npa/src/npa/deploy/lerobot_version_manifest.json.

Upstream release notes: https://huggingface.co/blog/lerobot-release-v060

Interfaces

API:

• POST /train
• POST /eval
• POST /serve
• POST /infer
• GET /list-checkpoints

CLI:

npa workbench lerobot deploy
npa workbench lerobot deploy --runtime vm --lerobot-version 0.6.0
npa workbench lerobot train
npa workbench lerobot train --runtime serverless --lerobot-version 0.6.0 --image '<validated-operator-image>@sha256:<digest>' ...
npa workbench lerobot eval
npa workbench lerobot serve
npa workbench lerobot infer
npa workbench lerobot list-checkpoints

Build operator/BYOF image variants (official publication has separate gates):

npa/docker/workbench/lerobot/build.sh --registry '<operator-registry>' --all-versions
# or
npa/docker/workbench/lerobot/build.sh --registry '<operator-registry>' --version 0.6.0

The datacenter-Blackwell variant is npa/docker/workbench/lerobot/Dockerfile.b300. LeRobot 0.5.1 requires Python 3.12, so this variant adds a dedicated /opt/lerobot/venv with torch 2.9/cu130 and the matching torchcodec 0.8 line; it does not reuse npa-base's Python 3.11 venv for the policy workload. The base venv remains available at /opt/npa/venv for the baked architecture and kernel validators. Keep both checks in hardware validation: validate the inherited CUDA base, then run a real ACT training step from the LeRobot venv.

Data Contract

Input format is LeRobotDataset in Hugging Face format. Use the SimToLeRobot adapter to convert Genesis or other simulation outputs.

Output is a policy checkpoint on S3.

Validation

• 9/9 E2E serverless tests pass on Nebius (default 0.5.1 image).
• Tier 1 validated on B300.
• 0.6.0: build npa-lerobot:0.6.0 and run the same golden env/functional smokes with NPA_LEROBOT_VERSION=0.6.0.