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Open-weight model · Robotics

openarm-pi05-bsp-full-3ep

by Riku KAMADA kamada-riku/openarm-pi05-bsp-full-3ep

openarm-pi05-bsp-full-3ep is an open-weight model for robotics from Riku KAMADA, released under Apache License 2.0. It has 4.1B parameters. At 16-bit it needs about 9.9 GB of GPU memory, which fits on 1x MI300X from $1.85 an hour, at the lowest prices in the SAVRN Index.

This is a relativesplinepi05 policy trained with LeRobot. This policy has been trained and pushed to the Hub using LeRobot. See the full LeRobot documentation. The policy consumes these observation features and produces these action features.

Parameters4.1B
Context—
Weights572.5 GB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads—

Runs On

What it takes to serve openarm-pi05-bsp-full-3ep (4.1B parameters): the memory its weights need at each precision, and the cheapest way to rent enough data-center GPUs to hold them.

PrecisionWeightsMemory neededCheapest setupPer hourAlso fits
16-bit 8.3 GB 9.9 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 4.1 GB 5.0 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 2.1 GB 2.5 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00

Memory is the weights at that precision plus 20% for the runtime and a short context; a long context needs more. Prices are the lowest on-demand hourly rates in the SAVRN Index, read Oct 19, 2026.

openarm-pi05-bsp-full-3ep on every accelerator the SAVRN Index prices, at every precision

Model Card

By Riku KAMADA, published under apache-2.0, revision 39a06f23d87d.

This is a relativesplinepi05 policy trained with LeRobot. This policy has been trained and pushed to the Hub using LeRobot. See the full LeRobot documentation. The policy consumes these observation features and produces these action features. Inputs Outputs New to LeRobot? These guides cover the full workflow: - Install LeRobot — set up the lerobot package. - Hardware setup — assemble, wire, and calibrate your robot and cameras. - Record data & train a policy — the end-to-end imitation-learning walkthrough. - CLI cheat-sheet — quick reference for the lerobot- commands. The short version to run and train this policy: Replace the remaining placeholders with your own values: --robot.port and…

Read Riku KAMADA's full model card

Model Card for relative_spline_pi05

This is a relative_spline_pi05 policy trained with LeRobot.

This policy has been trained and pushed to the Hub using LeRobot.

See the full LeRobot documentation.


Model Details

  • License: apache-2.0
  • Robot type: bi_openarm_follower
  • Cameras: front, left_wrist, right_wrist

Inputs & Outputs

The policy consumes these observation features and produces these action features.

Inputs

Feature Type Shape
observation.state STATE (16,)
observation.images.front VISUAL (3, 480, 640)
observation.images.left_wrist VISUAL (3, 480, 640)
observation.images.right_wrist VISUAL (3, 480, 640)

Outputs

Feature Type Shape
action ACTION (16,)

Training Dataset

Training Configuration

Setting Value
Training steps 22311
Batch size 32
Optimizer adamw
Learning rate 2.5e-05
Seed 1000
LeRobot version 0.6.2

How to Get Started with the Model

New to LeRobot? These guides cover the full workflow:

The short version to run and train this policy:

Run the policy on your robot

lerobot-rollout \
  --strategy.type=base \
  --robot.type=bi_openarm_follower \
  --robot.port=<your_robot_port> \
  --robot.cameras="{ <camera_1>: {type: opencv, index_or_path: <index_or_path>, width: 640, height: 480, fps: 30}, <camera_2>: {type: opencv, index_or_path: <index_or_path>, width: 640, height: 480, fps: 30}}" \
  --policy.path=kamada-riku/openarm-pi05-bsp-full-3ep \
  --task="Pick up the large green gear and place it in the recessed area of the white board." \
  --duration=60

Replace the remaining <...> placeholders with your own values: --robot.port and the camera names/indices are specific to your machine, and the camera names must match the observation keys this policy was trained on.

When --strategy.type=base is used the script doesn't record the episodes. Skipping duration will make the policy run indefinitely. For more information look at rollout documentation.

Train your own policy

lerobot-train \
  --dataset.repo_id=${HF_USER}/<dataset> \
  --policy.type=relative_spline_pi05 \
  --output_dir=outputs/train/<policy_repo_id> \
  --job_name=lerobot_training \
  --policy.device=cuda \
  --policy.repo_id=${HF_USER}/<policy_repo_id> \
  --wandb.enable=true

Writes checkpoints to outputs/train/<policy_repo_id>/checkpoints/.


Evaluation

No evaluation results have been provided for this policy yet.


Citation

If you use this policy, please cite the method linked in the description above, along with LeRobot:

@misc{cadene2024lerobot,
    author = {Cadene, Remi and Alibert, Simon and Soare, Alexander and Gallouedec, Quentin and Zouitine, Adil and Palma, Steven and Kooijmans, Pepijn and Aractingi, Michel and Shukor, Mustafa and Aubakirova, Dana and Russi, Martino and Capuano, Francesco and Pascal, Caroline and Choghari, Jade and Moss, Jess and Wolf, Thomas},
    title = {LeRobot: State-of-the-art Machine Learning for Real-World Robotics in Pytorch},
    howpublished = "\url{https://github.com/huggingface/lerobot}",
    year = {2024}
}

Identity and Version

Repository
kamada-riku/openarm-pi05-bsp-full-3ep
Publisher
Riku KAMADA
Task
Robotics
Modality
Control
Library
lerobot
Parameters
4.1B parameters
Languages
Not stated by the source
Revision
39a06f23d87da0599f2a8f95d4f3df7af9833ee3
First published
2026-09-25
Last updated
2026-09-27

Files and Weights

333 files, 573.3 GB in total. The weights are 118 files totalling 572.5 GB in safetensors.

Weights118 files · 572.5 GB
Configuration165 files · 3.3 MB
Tokenizer48 files · 825.3 MB
Documentation1 file · 5.9 KB
Repository1 file · 3.8 KB
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License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
572.5 GB
Download from Riku KAMADA

Released by Riku KAMADA through its official repository on Hugging Face. Read the license.

Built From

  • Trained on (disclosed) nkmurst/openarm_teleop_udp_d435_merged_20260804_relstats20260725_lerobot

Memory Requirements

PrecisionWeights in memory
As published572.5 GB
16-bit8.3 GB
8-bit4.1 GB
4-bit2.1 GB

Weights only, from the published parameter count; the key-value cache and runtime add to this.

Questions About openarm-pi05-bsp-full-3ep

How much GPU memory does openarm-pi05-bsp-full-3ep need?

About 9.9 GB at 16-bit and 2.5 GB at 4-bit: the weights (4.1B parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run openarm-pi05-bsp-full-3ep on?

At 16-bit, 1x MI300X from $1.85 an hour; at 4-bit, 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.

Can I use openarm-pi05-bsp-full-3ep commercially?

Yes. openarm-pi05-bsp-full-3ep is released under Apache License 2.0. The Apache License 2.0 is a permissive open-source license. It permits commercial use, modification and redistribution. It requires keeping the license and copyright notices and any NOTICE file, stating significant changes, and it includes an express patent grant from contributors.

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