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Open-weight model · Robotics

flux3_policy_black_cubes_5k-ema

by Vladislav Sovrasov sovrasov/flux3_policy_black_cubes_5k-ema

flux3_policy_black_cubes_5k-ema is an open-weight model for robotics from Vladislav Sovrasov, released under Apache License 2.0. It has 7.1B parameters. At 16-bit it needs about 17 GB of GPU memory, which fits on 1x MI300X from $1.85 an hour, at the lowest prices in the SAVRN Index.

FLUX 3 Action (flux3) is Black Forest Labs' video-action model: the FLUX.3 video trunk with an action modality that is denoised jointly with the next video frames, finetuned per robot embodiment with fresh action heads.

Parameters7.1B
Context—
Weights14.4 GB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads—

Runs On

What it takes to serve flux3_policy_black_cubes_5k-ema (7.1B 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 14.2 GB 17.0 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 7.1 GB 8.5 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 3.5 GB 4.3 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 20, 2026.

flux3_policy_black_cubes_5k-ema on every accelerator the SAVRN Index prices, at every precision

Model Card

By Vladislav Sovrasov, published under apache-2.0, revision ebae79c6819f.

FLUX 3 Action (flux3) is Black Forest Labs' video-action model: the FLUX.3 video trunk with an action modality that is denoised jointly with the next video frames, finetuned per robot embodiment with fresh action heads. This policy has been trained and pushed to the Hub using LeRobot. Learn how to train and run it in the LeRobot flux3 guide, or browse the full 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…

Read Vladislav Sovrasov's full model card

Model Card for flux3

FLUX 3 Action (flux3) is Black Forest Labs' video-action model: the FLUX.3 video trunk with an action modality that is denoised jointly with the next video frames, finetuned per robot embodiment with fresh action heads.

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

Learn how to train and run it in the LeRobot flux3 guide, or browse the full documentation.


Model Details

  • License: apache-2.0
  • Robot type: PhysicalAIRobot
  • Cameras: top, wrist

Inputs & Outputs

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

Inputs

Feature Type Shape
observation.images.scene VISUAL (3, 256, 256)
observation.images.wrist VISUAL (3, 256, 256)
observation.state STATE (6,)

Outputs

Feature Type Shape
action ACTION (6,)

Training Dataset

  • Repository: local/pick-black-cubes-room-2
  • Episodes: 50
  • Frames: 20195
  • Frame rate: 30 FPS
  • Task(s): "pick a black cube and move it to the cardboard bin"

Training Configuration

Setting Value
Training steps 5000
Batch size 2
Optimizer adamw
Learning rate 0.0001
Seed 42
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=PhysicalAIRobot \
  --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=sovrasov/flux3_policy_black_cubes_5k-ema \
  --task="pick a black cube and move it to the cardboard bin" \
  --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=${HF_USER}/<dataset> \
  --policy.type=flux3 \
  --output_dir=outputs/train/<policy_repo_id> \
  --job_name=lerobot_training \
  --policy.device=cuda \
  --policy.repo_id=${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
sovrasov/flux3_policy_black_cubes_5k-ema
Publisher
Vladislav Sovrasov
Task
Robotics
Modality
Control
Library
lerobot
Parameters
7.1B parameters
Languages
Not stated by the source
Revision
ebae79c6819f8e79a544d8c259e31f7be631a859
First published
2026-10-07
Last updated
2026-10-07

Files and Weights

10 files, 14.4 GB in total. The weights are 4 files totalling 14.4 GB in safetensors.

Weights4 files · 14.4 GB
Configuration4 files · 16.0 KB
Documentation1 file · 5.7 KB
Repository1 file · 1.5 KB
Every file
FileTypeSizeSHA-256
model.safetensorsWeights14.4 GB 5ebed2d36824
policy_postprocessor_step_0_flux3_action_history_unnormalizer.safetensorsWeights184 B 96a5f8de8c33
policy_preprocessor_step_3_flux3_observation_history_normalizer.safetensorsWeights360 B fb0b16f0b790
policy_preprocessor_step_4_flux3_action_target_normalizer.safetensorsWeights184 B 96a5f8de8c33
config.jsonConfiguration3.6 KB —
policy_postprocessor.jsonConfiguration536 B —
policy_preprocessor.jsonConfiguration1.6 KB —
train_config.jsonConfiguration10.2 KB —
README.mdDocumentation5.7 KB —
.gitattributesRepository1.5 KB —

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
14.4 GB
Download from Vladislav Sovrasov

Released by Vladislav Sovrasov through its official repository on Hugging Face. Read the license.

Built From

  • Trained on (disclosed) local/pick-black-cubes-room-2

Memory Requirements

PrecisionWeights in memory
As published14.4 GB
16-bit14.2 GB
8-bit7.1 GB
4-bit3.5 GB

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

Questions About flux3_policy_black_cubes_5k-ema

How much GPU memory does flux3_policy_black_cubes_5k-ema need?

About 17 GB at 16-bit and 4.3 GB at 4-bit: the weights (7.1B parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run flux3_policy_black_cubes_5k-ema 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 flux3_policy_black_cubes_5k-ema commercially?

Yes. flux3_policy_black_cubes_5k-ema 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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