Alexander Koch Profile
Alexander Koch

@alexkoch_ai

Followers
6K
Following
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Founder & CEO at Tau Robotics (@taurobots) | Z Fellow | Emergent Ventures Fellow

Palo Alto, CA
Joined April 2019
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@alexkoch_ai
Alexander Koch
2 months
You can read more about it in our blog post. And if you want to help us build this, please contact us. We are hiring research engineers and scientists for world modeling and reinforcement learning.
@taurobots
Tau Robotics
2 months
At Tau, we develop world-model based reinforcement learning algorithms to learn reliable policies and improve beyond human performance. Blog about our first world model:
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@alexkoch_ai
Alexander Koch
2 months
The world model consists of a large causal transformer with a small flow-matching head. This maximizes autoregressive generation speed for fast policy optimization. And it learns good representations for robot policies so that we can transfer knowledge from human videos.
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@alexkoch_ai
Alexander Koch
2 months
General-purpose robots will have to learn from trillions of trials. We have developed a new world model that is optimized for reinforcement learning in imagination. We scale it up to 1B parameters and train it on a large dataset of human and multi-camera robot data.
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@alexkoch_ai
Alexander Koch
10 months
We are hiring engineers @taurobots to scale robot learning to millions of robots. If you are experienced in reinforcement/imitation learning or have experience building robots, send me a message.
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@alexkoch_ai
Alexander Koch
10 months
Robotis offers now a $250 motor kit for the low cost robot arm It is missing some parts. You can use the guide by @JessMoss429864 @huggingface to buy and assemble a complete arm
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@alexkoch_ai
Alexander Koch
1 year
Collecting some data on our robot playground @taurobots
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@alexkoch_ai
Alexander Koch
1 year
Robots are teleoperated in the video, 1.5x speed.
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@alexkoch_ai
Alexander Koch
1 year
Packing the parts for the low-cost robot arm using our robot arms. Join the waitlist to get yours here:
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@alexkoch_ai
Alexander Koch
1 year
Excited to announce Tau Robotics (@taurobots). We are building a general AI for robots. We start by building millions of robot arms that learn in the real world. In the video, two robot arms are fully autonomous and controlled by a single neural network conditioned on different
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@alexkoch_ai
Alexander Koch
1 year
There is now a MuJoCo simulation for the low-cost robot arm. This can be used for testing and reinforcement learning. Contributed by @arbwes.
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@alexkoch_ai
Alexander Koch
1 year
The $250 open-source robot arm is on the front page of Hacker News currently. Nice discussion at
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@alexkoch_ai
Alexander Koch
1 year
Folding clothes with $250 robot arms. I've added another motor to improve mobility and extend the reach. The CAD files and the code are public at: (video at 2x speed)
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@alexkoch_ai
Alexander Koch
1 year
The design is inspired by the ALOHA project from @tonyzzhao and the lower-cost version GELLO by @philippswu.
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@alexkoch_ai
Alexander Koch
1 year
It is well suited for robot learning. The low weight and torque make the arm inherently safe.
@alexkoch_ai
Alexander Koch
1 year
Early results from my AI training runs. I've trained my $200 robot arm on a simple picking task using imitation learning. It has learned to control the robot arm using only camera images and joint states.
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@alexkoch_ai
Alexander Koch
1 year
It has a payload of a few hundred grams and a reach of slightly over 20cm. This Apple charger weighs just over 300g.
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@alexkoch_ai
Alexander Koch
1 year
The assembly takes about 20 minutes by an expert. I've uploaded the full assembly video on YouTube (. The designs are optimized for 3D printing. Only one part needs supports.
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@alexkoch_ai
Alexander Koch
1 year
Open-source robot arm for about $200. It uses five Dynamixel servo motors and weighs slightly over 100g (without the base). The design for a leader arm is included as well so that you can teleoperate it effectively. (Video is at 1x speed).
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@alexkoch_ai
Alexander Koch
1 year
$1000 robot farm
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@alexkoch_ai
Alexander Koch
1 year
Upgraded my robot arm to use a Raspberry Pi. Now it only requires a single 12v power supply and a data cable. The Raspberry Pi will send the sensor data via ethernet to a central GPU server to compute new actions. This server should be able to control 100 robot arms in parallel.
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@alexkoch_ai
Alexander Koch
1 year
It predicts future camera images and joint angles given the control input from the leader arm. This learned simulation will later be used to train an AI to control the robot arm. My implementation is based on the Dreamer algorithm by @danijarh.
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