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We’ve developed a memory system for our models that provides both short-term visual memory and long-term semantic memory. Our approach allows us to train robots to perform long and complex tasks, like cleaning up a kitchen or preparing a grilled cheese sandwich from scratch 👇

462,996 views • 8 months ago •via X (Twitter)

37 Comments

Physical Intelligence's profile picture
Physical Intelligence8 months ago

Without memory, robots can struggle in many real-world situations, like failing the same way over and over again, getting stuck, or losing track of time. But we can’t just cram minutes or hours of video into our model’s context – that would quickly become intractable.

Physical Intelligence's profile picture
Physical Intelligence8 months ago

To this end, we developed Multi-Scale Embodied Memory (MEM). The key idea: use different modalities to represent memory at different time scales. 📹 For short horizon memory, we developed an efficient video encoder that lets the model remember fine-grained details about its recent interactions. 📜 For long horizon memory, we train the model to summarize events in text, allowing it to remember events for up to 15 min.

Physical Intelligence's profile picture
Physical Intelligence8 months ago

With MEM, our model can carry out real, multi-stage tasks in the real world, like cleaning up an entire kitchen or setting up the ingredients for a recipe. The videos show how the robot keeps track of long-horizon memory in text.

Physical Intelligence's profile picture
Physical Intelligence8 months ago

Apart from solving new tasks, memory also allows our policies to be more robust: we show early signs of in-context adaptation, where the robot learns to adapt its behavior on-the-fly by learning from its past mistakes.

Physical Intelligence's profile picture
Physical Intelligence8 months ago

For more, check out our paper: our blog post:

Brosnan Hoban's profile picture
Brosnan Hoban8 months ago

Memory: because robots shouldn't keep burning grilled cheese forever.

Nurvai - The Data Layer for Physical AI's profile picture
Nurvai - The Data Layer for Physical AI8 months ago

This is genius. Split memory into short-term visual state and long-term semantic abstraction. That’s what actually makes long-horizon tasks workable. More VLAs need this.

Andrew Erlanger's profile picture
Andrew Erlanger8 months ago

You’re telling me the robot can’t open the fridge because of a memory issue?

hewaterGG's profile picture
hewaterGG8 months ago

This is huge! Short-term visual + long-term semantic memory is exactly what's been missing in robotics. A robot that can remember where you keep the plates AND understand what a "plate" is - that's the key to general purpose robots. Grilled cheese sandwiches are just the beginning.

Bercan's profile picture
Bercan8 months ago

Great work!

Reza Sayar's profile picture
Reza Sayar8 months ago

Awesome work! 🔥🔥👏May I ask what made you decide to train your own video encoder, as opposed to using the available ones? 👀

90eights👊🏾🇰🇪's profile picture
90eights👊🏾🇰🇪8 months ago

The integration of short-term visual persistence with long-term semantic retrieval is the missing link for true embodied agency. Moving beyond reactive robotics into structured, long-horizon task execution is where the industry shifts. 🤖🧠

Charan Kumar's profile picture
Charan Kumar8 months ago

Short-term visual memory in models is the piece that's been missing for truly embodied AI. If the model can remember what it just saw, the action loop becomes dramatically more coherent.

Prabhu's profile picture
Prabhu8 months ago

Good one :)

BoldHyun's profile picture
BoldHyun8 months ago

A robot making grilled cheese from scratch? The dual memory architecture combining visual and semantic memory for complex tasks is genuinely innovative. #AI

Abaka AI's profile picture
Abaka AI8 months ago

Congrats, amazing work! Curious how you handle the boundary when tasks stretch past that, does the oldest summary get compressed again, or do you start losing context?

Faraz 🇺🇸 🚀's profile picture
Faraz 🇺🇸 🚀8 months ago

@lachygroom Sick - and this is just the start

Paul Katsen's profile picture
Paul Katsen8 months ago

Great way to communicate progress.

Emerie's profile picture
Emerie8 months ago

Beauty 🤞

kvick's profile picture
kvick8 months ago

I cant wait to get my own robotic cockroach that feeds me grilled cheese sandwiches

Life Of Rick's profile picture
Life Of Rick8 months ago

living this daily — short-term context per session, long-term memory across days. the gap between \

Branded Domain's profile picture
Branded Domain7 months ago

#physical #AI #intelligence

Lureo's profile picture
Lureo8 months ago

the memory piece is what most demos skip. anyone can get a robot to flip a burger once. getting it to remember where it put the spatula 30 seconds ago is the actual hard problem

Jake's profile picture
Jake8 months ago

so cool

Ben Butler's profile picture
Ben Butler8 months ago

v cool

The Godfather's profile picture
The Godfather8 months ago

Cool shit.

Nico de Ory's profile picture
Nico de Ory8 months ago

The future is closer than we think

Ziji Lozzo's profile picture
Ziji Lozzo8 months ago

Remind Roxanne Bilbao to not stand up people on interviews, then saying she had an emergency, she is in the Philippines, WTF? communication and timing is horrid, if wanting to pay $25/hr for a teleop position at least make hiring experience better. you’re definitely a cheapskate

Mezba | NeuraLogical․com's profile picture
Mezba | NeuraLogical․com8 months ago

PI powered Physical Intelligent

goodgoy's profile picture
goodgoy8 months ago

and it cant vote left and file a divorce

Prasanth's profile picture
Prasanth8 months ago

@grok is this company on the markets?

Flo | GameDev Analysis 🔜 Gamescom's profile picture
Flo | GameDev Analysis 🔜 Gamescom8 months ago

It's time to set RFID/QR Codes on products everywhere to ease store management.

State Labs's profile picture
State Labs8 months ago

impressive

AIKeaton UK's profile picture
AIKeaton UK8 months ago

Visual + semantic memory integration addresses one of robotics' biggest bottlenecks. Is the training pipeline something you're open-sourcing?

Kenneth Rapoza's profile picture
Kenneth Rapoza8 months ago

Cool. Where do I store this robot in my house and how much does it cost....?

polymaddy's profile picture
polymaddy8 months ago

hey @RakshithSajjan this is what

polymaddy's profile picture
polymaddy8 months ago

how viable is this for manufacturing industries

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