MolmoAct-2

MolmoAct-2 is Ai2's vision-language-action model trained on diverse bimanual manipulation data. The MolmoAct-2 base is not directly deployable — Ai2 designed it as a lineage anchor from which per-embodiment fine-tunes are derived. Each fine-tune carries its own contract (state shape, camera layout, action horizon) suited to its hardware. [source: https://huggingface.co/allenai/MolmoAct2]

Pass the fine-tune's tag to Robot(model=...). Passing "molmoact2" (the base tag) raises BaseNotDeployableError with the list of available fine-tunes.

import newt

# This raises BaseNotDeployableError — use a fine-tune tag instead.
# robot = newt.Robot(model="molmoact2")

# Use the SO-101 fine-tune:
robot = newt.Robot(model="so101", ...)

Fine-tunes