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Black Forest Labs Releases FLUX 3 Action: A 7B Open-Weights World Action Model That Tops RoboLab-120

Agentic AIAI InfrastructureComputer VisionEmbedding ModelLanguage ModelLarge Language ModelMachine LearningOpen SourcePhysical AIPythonRoboticsVision Language Model

🔗 https://www.marktechpost.com/2026/09/24/black-forest-labs-releases-flux-3-action-a-7b-open-weights-world-action-model-that-tops-robolab-120/

📌 【Black Forest Labs】7B世界動作模型FLUX 3 Action登頂RoboLab-120

TL;DR:FLUX 3 Action是7B開源世界動作模型,登頂RoboLab-120且可在24GB顯卡運行。

開源機器人策略過去長期得二選一:要嘛選會「預測世界」但很慢的世界動作模型,要嘛選跑得快、但表現普通的視覺-語言-動作模型。FLUX圖片模型背後的Black Forest Labs(BFL)這次想兩者兼得。

🤔 世界動作模型與VLA的老問題

開源機器人策略一向得做取捨。像NVIDIA Cosmos 3 Nano這類世界動作模型(World Action Model, WAM)在RoboLab排行榜上表現領先,任務成功率達36.8%,但predicting video的代價很高;VLA(視覺-語言-動作模型)像π0.5跑得快,卻只能達到28.0%的成功率。BFL在B200上測得,Cosmos 3 Nano(FP8)每秒機器人動作所需的處理時間,約為π0.5(BF16)的4.7倍。FLUX 3 Action保留了joint video與action prediction的做法,改用較小的backbone搭配蒸餾(distillation)來縮小速度差距。

🧩 架構:從FLUX 3多模態骨幹到EE50動作空間

FLUX 3 Action衍生自多模態的FLUX 3 backbone。其pretraining使用了圖片、影片、音訊資料,其中影片佔訓練token超過95%。文字、影片、機器人狀態被編碼成token,backbone輸出的future tokens被解碼成未來影格,action tokens則被解碼成機器人動作。一筆資料在模型中的流程大致如下:

  1. 攝影機影格、機器人狀態、文字指令一併輸入模型
  2. 三者被統一編碼為token序列
  3. Backbone同時輸出future tokens與action tokens
  4. Future tokens解碼為未來影片幀,action tokens解碼為下一段動作序列

Midtraining混合了pretraining資料(佔樣本36.95%)與動作對齊的影片(佔63.05%),動作資料涵蓋遊戲錄影、第一人稱視角的人手影片、手持夾爪,以及跨14種載具形態(embodiments)的teleoperation資料。多數機器人資料共用一個50維度的末端執行器(end-effector)動作空間,稱為EE50。

一項消融實驗顯示pretraining的重要性:若不做pretraining、只用DROID資料訓練,RoboLab成績停留在1%以下;有了pretraining,同一套訓練流程可以達到11.6%。

📊 RoboLab-120與真實機臺測試

RoboLab-120由Isaac Sim中的120個桌面型任務組成,每個任務跑10次試驗,採用DROID風格的Franka機械手臂設置。

模型類型RoboLab-120任務成功率
FLUX 3 ActionWAM,7B42.92%(排行榜);多種子平均42.24%±0.36(FP8導引蒸餾版)
Cosmos 3 NanoWAM36.8%
π0.5VLA28.0%

FLUX 3 Action比Cosmos 3 Nano領先6.1個百分點,參數量卻少了56%。

真實硬體方面,Positronic Robotics在一臺Franka機械手臂上做盲測,10個DROID任務、每個3次嘗試:

模型成功次數/總次數成功率
FLUX 3 Action28/3093.3%
Cosmos 3 Nano27/3090%
DreamZero20/3066.7%
π0.513/3043.3%

速度上,與Cosmos 3 Nano(FP8)相比,FLUX 3 Action的base與guidance-distilled checkpoint在消費級、工作站級、資料中心級GPU上快1.52至3.95倍。每次呼叫會產生32個動作、頻率15Hz,等同2.13秒的動作,而π0.5每次呼叫只產生1.0秒動作,因此BFL選擇用「real-time factor」而非單次呼叫延遲來比較速度。FP8版本的step-distilled checkpoint在工作站與資料中心GPU上比π0.5快1.34至2.28倍,不過在RTX 5090上反而比π0.5慢。

BFL也依循Su et al.(2026)的設定,測試了與GPT 6 Astra的混合控制,讓reasoner可以執行、編輯或取代策略預測的動作。FLUX 3 Action搭配低推理強度時,混合方案完成90%的episode,平均每次成功花費8.77美元、8分08秒;純Astra在最大推理強度下完成100%,但每次成功要花13.47美元、16分23秒。

🧩 部署與微調

DROID policy在H200上以BF16運行約需32GB GPU記憶體,搭配FP8量化與text encoder offload可以塞進24GB顯卡。授權採FLUX Kommunity License,限非商業用途。BFL提供三種recipe,各有BF16、FP8版本。團隊可用自己的示範資料微調,BFL公開了DROID recipe與SO-101 LoRA recipe,文件顯示一個SO-101夾取放置技能是從約200筆示範學來的。模型已與NVIDIA合作原生整合進Hugging Face LeRobot,並支援NVIDIA Jetson邊緣部署,文件中也附有遊戲操作與模擬無人機範例。

⚠️ 限制

模型輸出的是關節目標(joint targets),沒有內建速度、力量或工作空間限制,應用端必須自行加上這些安全限制。

🎯 實務啟示

FLUX 3 Action證明joint video-action prediction不必然犧牲速度。對機器人團隊來說,pretraining(尤其是用非機器人的影片與人手示範資料)對下游任務成功率的貢獻,遠大於只靠機器人示範資料硬train。若要落地部署,務必記得為模型輸出的動作額外包一層安全限制。

🔗 來源

#RoboticsAI #WorldModel #FLUX3 #BlackForestLabs #OpenWeights #RobotLearning #VLA #ImitationLearning #EdgeAI #RoboLab120

原始資料 MarkTechPost · 收集於 2026-09-25
來源原標題
Black Forest Labs Releases FLUX 3 Action: A 7B Open-Weights World Action Model That Tops RoboLab-120
作者
Asif Razzaq
原始標籤
Agentic AI · AI Infrastructure · AI Shorts · Artificial Intelligence · Computer Vision · Editors Pick · Embedding Model · Language Model · Large Language Model · Machine Learning · New Releases · Open Source · Physical AI · Python · Robotics · Staff · Tech News · Technology · Vision Language Model
原始連結
https://www.marktechpost.com/2026/09/24/black-forest-labs-releases-flux-3-action-a-7b-open-weights-world-action-model-that-tops-robolab-120/

摘要原文

Black Forest Labs (BFL), the lab behind the FLUX image models, has released FLUX 3 Action . It is a 7B open-weights World Action Model (WAM) for robot control. The model reads camera frames, robot state and a text instruction. It then predicts future video frames and the next chunk of actions together. On the RoboLab-120 leaderboard , it ranks first at 42.92% task success. Is it deployable? Yes, with conditions. The DROID policy needs about 32 GB of GPU memory in BF16 on an H200. It fits 24 GB cards with FP8 quantization and text encoder offload. The FLUX Kommunity License allows non-commercial use. Open robot policies usually force a choice. WAMs like NVIDIA’s Cosmos 3 Nano lead RoboLab at 36.8%, but predicting video is expensive. VLAs like π0.5 are fast, but reach only 28.0%. On a B200, BFL measured that Cosmos 3 Nano (FP8) needs about 4.7x more processing time than π0.5 (BF16) per second of robot motion. FLUX 3 Action keeps joint video and action prediction. BFL closes the speed gap with a smaller backbone and distillation instead. FLUX 3 Action is derived from the multimodal FLUX 3 backbone. Pretraining used image, video and audio data, and video made up over 95% of training tokens. Text, video and robot state are encoded into tokens. The backbone’s future tokens are decoded into video frames, and its action tokens into robot actions. Midtraining mixed pretraining data (36.95% of samples) with action-aligned video (63.05%). The action data covered game recordings, egocentric human hand video, handheld grippers and teleoperation across 14 embodiments. Most robot data uses a shared 50-dimension end-effector action space called EE50. Pretraining matters a lot here. Without it, DROID-only training stayed below 1% on RoboLab. With pretraining, the same protocol reached 11.6%. RoboLab-120 has 120 tabletop tasks in Isaac Sim, with 10 trials each on a DROID -style Franka setup. That is a 6.1 percentage point lead with 56% fewer parameters than Cosmos 3 Nano. The 42.92% figure is the leaderboard entry. BFL’s multi-seed mean for the guidance-distilled FP8 checkpoint is 42.24% ± 0.36. Real hardware results follow the same pattern. Positronic Robotics ran a blind evaluation on a Franka arm with 10 DROID tasks and 3 attempts each. FLUX 3 Action completed 28 of 30 attempts (93.3%). Cosmos 3 Nano scored 27/30, DreamZero 20/30 and π0.5 13/30. BFL ships the DROID policy in 3 recipes, each in BF16 and FP8: Against Cosmos 3 Nano in FP8, the base and guidance-distilled checkpoints run 1.52x to 3.95x faster across consumer, workstation and datacenter GPUs. Each call yields 32 actions at 15 Hz, or 2.13 seconds of motion. π0.5 yields 1.0 second per call. So BFL reports speed as real-time factor, not per-call latency. In FP8, the step-distilled checkpoint beats π0.5 by 1.34x to 2.28x on workstation and datacenter GPUs. On an RTX 5090, it is slower than π0.5. BFL also tested hybrid control with GPT 6 Astra, following the Su et al. (2026) setup. The reasoner can execute, edit or replace the policy’s predicted actions. With FLUX 3 Action and low reasoning effort, the hybrid solved 90% of episodes at $8.77 and 8m 08s per success. Pure Astra at maximum effort solved 100%, but cost $13.47 and 16m 23s per success. AI teams can fine-tune FLUX 3 Action on their own demonstrations. BFL published a DROID recipe and an SO-101 LoRA recipe . Its docs show an SO-101 pick-and-place skill learned from about 200 demonstrations. With NVIDIA, BFL integrated the model natively into Hugging Face LeRobot , and it supports edge deployment on NVIDIA Jetson. The docs also include game-playing and simulated drone examples. The model outputs joint targets with no built-in velocity, force or workspace limits. Your application must enforce those limits. Check out the full technical report , model weights , GitHub repo and docs . All credit goes to the researcher of this project. Also, feel free to follow us on Twitter and don’t forget to join our 150k+ML SubReddit and Subscribe to our Newsletter . Wait! are you on telegram? now you can join us on telegram as well. Need to partner with us for promoting your GitHub Repo OR Hugging Face Page OR Product Release OR Webinar etc.? Connect with us The post Black Forest Labs Releases FLUX 3 Action: A 7B Open-Weights World Action Model That Tops RoboLab-120 appeared first on MarkTechPost .

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