Black Forest Labs · robot AI model
FLUX 3 Action
Germany · 2026
Sources retrieved: 10 November 2026 (A, B, C, D)
- Model type
- World action modelSource and note: Model typeA github.com/black-forest-labs/flux-action · Retrieved 10 November 2026Note. Black Forest Labs' own term. Code repository README: “FLUX 3 Action is an open weights 7B world action model”. Blog: “We present FLUX 3 Action, an open-weight 7B world-action-model derived from our multimodal FLUX 3 backbone”.
- What it controls
- Arms and handsSource and note: What it controlsB bfl.ai/blog/flux-3-action · Retrieved 10 November 2026Note. Hugging Face model card: “FLUX 3 Action outputs joint targets.” The blog reports the policy on a robot arm: Positronic Robotics “ran our action policy on a Franka arm in its lab”. “We also applied the same finetuning recipe on the SO-101 embodiment.”
- Inputs
- Camera Language Robot stateSource and note: InputsA github.com/black-forest-labs/flux-action · Retrieved 10 November 2026Note. Code repository README: “It takes camera frames, the robot's state and a text instruction, and returns the next chunk of actions, denoised together with the next video frames.”
- Access
- Open weights (download)Source and note: AccessC huggingface.co/black-forest-labs/flux-3-action-base · Retrieved 10 November 2026Note. Hugging Face model card: “This repository is publicly accessible, but you have to accept the conditions to access its files and content.” The repository is listed as gated (automatic approval).
- Parameters
- 7BSource and note: ParametersA github.com/black-forest-labs/flux-action · Retrieved 10 November 2026Note. Code repository README: “FLUX 3 Action is an open weights 7B world action model”.
- Base model
- FLUX 3Source and note: Base modelB bfl.ai/blog/flux-3-action · Retrieved 10 November 2026Note. Blog: “We present FLUX 3 Action, an open-weight 7B world-action-model derived from our multimodal FLUX 3 backbone”.
- Licence document
- FLUX Kommunity License v.1.0Source and note: Licence documentC huggingface.co/black-forest-labs/flux-3-action-base · Retrieved 10 November 2026Note. Hugging Face model card: “This model falls under the FLUX Kommunity License v.1.0”. The text encoder in the base repository “is an unmodified copy of Qwen3-VL-4B-Instruct under Apache-2.0”; the code repository has its own license.
Specifications
11 of 14 stated 3 not stated
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Release1/1 disclosed
ReleasedSeptember 2026
Source and note: ReleasedB bfl.ai/blog/flux-3-action · Retrieved 10 November 2026Note. [A] The blog post is headed “FLUX 3 Action September 2026”; no day is given.
Input and output3/4 disclosed
Model typeWorld action model
Source and note: Model typeA github.com/black-forest-labs/flux-action · Retrieved 10 November 2026Note. Black Forest Labs' own term. Code repository README: “FLUX 3 Action is an open weights 7B world action model”. Blog: “We present FLUX 3 Action, an open-weight 7B world-action-model derived from our multimodal FLUX 3 backbone”.
InputsCamera Language Robot state
Source and note: InputsA github.com/black-forest-labs/flux-action · Retrieved 10 November 2026Note. Code repository README: “It takes camera frames, the robot's state and a text instruction, and returns the next chunk of actions, denoised together with the next video frames.”
What it controlsArms and hands
Source and note: What it controlsB bfl.ai/blog/flux-3-action · Retrieved 10 November 2026Note. Hugging Face model card: “FLUX 3 Action outputs joint targets.” The blog reports the policy on a robot arm: Positronic Robotics “ran our action policy on a Franka arm in its lab”. “We also applied the same finetuning recipe on the SO-101 embodiment.”
Degrees of freedom controlledNot stated
Source and note: Degrees of freedom controlledB bfl.ai/blog/flux-3-action · Retrieved 10 November 2026Note. The blog describes the action space of its robot datasets but names no degrees-of-freedom total for one robot setup: “Here, we train directly on 6 joint states and one gripper state as we do not have models of the forward dynamics of the embodiment.”
Size and speed2/2 disclosed
Parameters7B
Source and note: ParametersA github.com/black-forest-labs/flux-action · Retrieved 10 November 2026Note. Code repository README: “FLUX 3 Action is an open weights 7B world action model”.
Control rate15Hz
Source and note: Control rateB bfl.ai/blog/flux-3-action · Retrieved 10 November 2026Note. Applies to the policy's action output, not to inference speed: the blog table is captioned “Table 3: Policy output and control settings.” Columns “Policy Actions per prediction Control rate (Hz) Full-chunk duration (s)”; the row for FLUX 3 Action is labelled “F3 + C3 32 15 2.13”. The text says “it can predict a longer horizon of 2.13s of motion”.
Where it runs and what it is built on1/2 disclosed
On robot or cloudNot stated
Source and note: On robot or cloudB bfl.ai/blog/flux-3-action · Retrieved 10 November 2026Note. The blog does not say whether the model runs on the robot or in the cloud; it says “where efficiency in particular is a critical and necessary capability for local deployments”.
Base modelFLUX 3
Source and note: Base modelB bfl.ai/blog/flux-3-action · Retrieved 10 November 2026Note. Blog: “We present FLUX 3 Action, an open-weight 7B world-action-model derived from our multimodal FLUX 3 backbone”.
Openness2/3 disclosed
AccessOpen weights (download)
Source and note: AccessC huggingface.co/black-forest-labs/flux-3-action-base · Retrieved 10 November 2026Note. Hugging Face model card: “This repository is publicly accessible, but you have to accept the conditions to access its files and content.” The repository is listed as gated (automatic approval).
Licence documentFLUX Kommunity License v.1.0
Source and note: Licence documentC huggingface.co/black-forest-labs/flux-3-action-base · Retrieved 10 November 2026Note. Hugging Face model card: “This model falls under the FLUX Kommunity License v.1.0”. The text encoder in the base repository “is an unmodified copy of Qwen3-VL-4B-Instruct under Apache-2.0”; the code repository has its own license.
Licence typeNot stated
Source and note: Licence typeD huggingface.co/black-forest-labs/flux-3-action-base/blob/main/LICENSE.md · Retrieved 10 November 2026Note. The license makes the weights available for non-commercial and non-production use, or for commercial use as a Qualifying User; it names neither a fully open nor a paid model: “freely available for your non-commercial and non-production use or commercial use as a Qualifying User”.
The developer’s own claims2/2 disclosed
Learns new tasksNeeds retraining
Source and note: Learns new tasksB bfl.ai/blog/flux-3-action · Retrieved 10 November 2026Note. Developer claim, blog: “We then adapt this foundation through joint video-action training and finetuning for a target embodiment and its corresponding action space.” Hugging Face model card: “New embodiments require their own action heads.”
Works across robotsYes
Source and note: Works across robotsB bfl.ai/blog/flux-3-action · Retrieved 10 November 2026Note. Developer claim, blog: Positronic Robotics “ran our action policy on a Franka arm in its lab”. “We also applied the same finetuning recipe on the SO-101 embodiment.” Each robot needs its own fine-tuned policy: “New embodiments require their own action heads.”Yes only if the developer itself says the model runs on different robot models, for example robots from two manufacturers or two of one manufacturer’s models. Several units of the same robot do not count.
Notes
Black Forest Labs describes FLUX 3 Action on its blog and in its code repository as a world action model.
The base-weights repository on Hugging Face says it is part of a collection with separate ready-to-use policies for two robot setups.
Black Forest Labs lists its labs on its own website.
Sources
One line per source, not per figure: a source has one retrieval date.
- Agithub.com/black-forest-labs/flux-actionRetrieved 10 November 2026
- Bbfl.ai/blog/flux-3-actionMain source. Retrieved 10 November 2026
- Chuggingface.co/black-forest-labs/flux-3-action-baseRetrieved 10 November 2026
- Dhuggingface.co/black-forest-labs/flux-3-action-base/blob/main/LICENSE.mdRetrieved 10 November 2026
