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Allen Ren

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@allenzren

Generalist robot policy @physical_int
allenzren.github.io Joined August 2019
348 Following 2.3K Followers 408 Posts

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Allen Ren Verified account @allenzren
Robot foundation model should not just mimic human demos, but also understand the nuance and intent of each action. Reasoning led remarkable scaling for LLMs, and we find language-action reasoning unlocks generalization for physical world as well bridging diverse action data 👇
Lihan Zha Verified account @LihanZha Oct 9
What’s missing from robot foundation models? An explicit understanding of WHY motions work: why move in this direction, why place the object in this way, how hard to grasp the object. This motion-level reasoning bridges instructions to actions—and provides knowledge that can generalize across embodiments and scenes.

Pure behavior cloning supervises WHAT actions to take, but leaves models to infer WHY those actions work. This becomes especially limiting when learning from large-scale heterogeneous data, including egocentric human data, where humans and robots can take very different actions to achieve the same physical effect. We need models to extract the intent behind those motions, rather than simply recite them. Why leave that knowledge buried in trajectories when we can teach it explicitly?

Introducing EgoLAP: a shared language for human and robot motion. Language actions teach HOW to move; motion-level reasoning teaches WHY the motion works. Together, they unlock, to our knowledge, unprecedented gains in zero-shot performance for robot foundation models without additional robot demonstrations.

arxiv.org/abs/2610.08726
ego-lap.github.io
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Allen Ren Verified account @allenzren
Robot foundation models are nothing but demos until we put them into real-world battles. We’ve always been amazed by how Ultra keeps hill-climbing on the tasks that matter in the real world. Congrats to the cracking team and excited for what’s ahead!
Ultra Verified account @Ultraroboticsco Oct 9
Robotics has a distribution problem. Today, Ultra is announcing $62M in funding to solve it, including a $50M Series A led by @hiFramework.

We believe that deployment is the bottleneck in robotics.

It’s relatively easy to make a robot look impressive in a controlled environment. It’s much harder to put a robot into the open world, make it useful, keep it running, earn the trust of the people working alongside it, and do that over and over and over again.

So that’s what we’re focusing on.
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Allen Ren Verified account @allenzren
I will be presenting π0.7 at the FM4RoboPlan workshop tomorrow at RSS! I’ll be talking about why I believe diverse conditioning is the key to unlocking learning from diverse data.

Time: 11:25-11:50am
Room: UTS CB11.B2.103 (Building 11, Level B2, Room 103)
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Allen Ren Verified account @allenzren
One big step towards “one model that controls any robot to do any task”! It was super fun to help put our model in the sky.
Stanford MSL @StanfordMSL Mar 28
π, But Make It Fly ✈️
We fine-tuned π0, a VLA model pretrained entirely on manipulators, to fly a drone that picks up objects, navigates through gates, and composes both skills from language commands.
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