Model card

Made by
NVIDIA
Size
16B parameters
Published
31 May 2026
More about the model
Publication
arXiv 2606.02800
Weights licence
OpenMDW 1.1 source
Actions per chunk
32 joint-position actions, at 15 Hz source
Smallest GPU
Two RTX Pro 6000, the setup NVIDIA serves it on source
Architecture
Mixture-of-Transformers: an autoregressive tower and a diffusion tower source
Training data
Cosmos3-Nano, post-trained on DROID: 76k trajectories, 350 hours source

Run with Positronic

Start the server source

docker run --gpus all -p 8000:8000 positro/cosmos3-nano

Drive a DROID robot from a positronic checkout guide

uv run --extra hardware positronic-inference real \
  --policy=.remote \
  --policy.address.host=localhost --policy.address.port=8000 \
  --next_task.instruction="Put the marker on the plate"

Progress through an episode

Each band shows how many episodes of Cosmos3 Nano were in that band at each second. On a task of one step, an episode is in the band of the furthest stage it reached. On a task of several steps, an episode is in the band its credit has reached, and each band starts at its stage's credit for one step. The dashed line shows the mean Reliability.

Episodes

Each episode of Cosmos3 Nano on DROID: Everyday tasks, the newest first.