Chris Paxton
@chris_j_paxton
Mostly posting about robots.
currently AI @agilityrobotics
prev embodied AI @AIatMeta, @NVIDIAAI. All views my own.
3.8K Following 39.2K Followers
Alright this is pretty cool
Fundamentally in agreement with Bernt about the core value of humanoids. There absolutely will be a place for a wide variety of single purpose robots -- and there are many ways to build general-purpose hardware other than humanoids, to varying goals -- but no doubt in my mind generalist robots will "win" in many areas
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Incredible progress in 1 year
Another welding spider robot. Being able to climb walls seems incredibly useful (especially for shipbuilding)
End-to-end whole body mobile manipulation on @agilityrobotics Digit. We ran this demo for ~12 hours at IROS earlier this week
video is 1x speed, autonomous, in a previously-unseen location (not in training data).
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This robot looks incredible to me. Really tight, reactive control. This example had the guy pouring sugar with spoon and mixing with a glass stirrer.
Fundamentally i think it will still take a focus on robotics to solve robotics.
GPT-6 Astra vs Opus 5.5 vs Grok 4.7 vs MolmoAct2.
Real time. No sped-up demos. Zero-shot. No cherry-picking.
LLM robot control is progressing, but we’re definitely not there yet. Low-level control for robotics still matters according to Moravec’s paradox.
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A lot of people watching
Impressive level of coordination and whole body control. Picking up a record is nice because its a fairly fragile object, and placing it is quite precise. Very optimistic about robot foundation models
Introducing Δ₀ (Delta-0), our humanoid foundation model for whole-body loco-manipulation.
One generalist policy. 69 degrees of freedom. Everyday tasks at near-human speed—from making a bed to putting on a record.
Watch Δ₀ in action.
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Introducing Δ₀ (Delta-0), our humanoid foundation model for whole-body loco-manipulation.
One generalist policy. 69 degrees of freedom. Everyday tasks at near-human speed—from making a bed to putting on a record.
Watch Δ₀ in action.
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GPT-6 Astra vs Opus 5.5 vs Grok 4.7 vs MolmoAct2.
Real time. No sped-up demos. Zero-shot. No cherry-picking.
LLM robot control is progressing, but we’re definitely not there yet. Low-level control for robotics still matters according to Moravec’s paradox.
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What can GPT-6 Astra do on a humanoid when the contact gets hard?
Give it the right interaction kernel.
Led by @yk20wang, our team presents KPI: A Promptable Kernel for Physical Interaction on Humanoids.
With our agentic system, Astra completes long-horizon, contact-rich tasks zero-shot—no task demos or task-specific training.
1/6
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ETH Zurich’s Junzhe He demonstrates a humanoid robot playing badminton against a human.
Impressive reaction time from the new @SharpaRobotics robot at IROS. Catching randomly falling foam cylinders. I did not do nearly this well
Incredibly slow for a very simple pick and place manipulation task that you could probably vibe code faster with SAM. Which to be clear isnt a real solution, it's not robust enough for real environments and tasks. But robotics benchmarking largely remains not challenging enough!
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People watching GPT-6 Astra demos on X may not realise how slow it actually is in real time. Here’s a rollout of GPT-6 Astra controlling the MolmoAct2 YAMs to complete this task in real-time.
There is potential, but i don’t think it’s practical for real-world robotics deployment yet.
I applaud your patience if you make it through the whole video.
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It’s depressing that @WSJ’s journalism standards have sunken so low that it publishes easily disprovable claims.
It’s easier to just run with Foundation Robotics’ lies about its $24 million US military contract than do five minutes of fact checking. It’s like they’re running an Instagram engagement farm rather than a credible news organization.
If they can’t do a basic public database search to check if something is true, how can anything they report on be trusted?
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Come and see Digit in action 🤖
To folks attending IROS: Welcome to Pittsburgh and CMU! I’d love to chat in person with people doing hardware, arm/whole-body control, ego/UMI pretraining. I bring my takes on agentic robotics and data. Let me know if you’re interested!
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It actually is a beautiful city
