For years, the industry whisper has been that Apple is the place to be if you want an unlimited R&D budget. But a recent high-profile exit suggests that the center of gravity for physical AI has shifted to Palo Alto.
Yilun Chen, a former Machine Learning Engineer and Research Scientist at Apple, has publicly announced his move to Tesla’s Optimus team. Yilun Chen has also previously worked at Lyft and Uber, focusing on autonomous vehicles.
In his announcement, Chen didn’t just confirm his new role; he offered a rare outsider's view of Tesla’s robotics progress, stating he was totally blown away by the scale and sophistication of the Optimus lab.
The Ultimate Dream
Chen’s background makes him a vital acquisition for Tesla. At Apple, he transitioned from engineering to research, focusing on prototyping and incubation. While he didn’t speak to his projects, he noted that many of them aren’t public yet. His expertise aligns perfectly with the rumored home robotics initiatives Apple has reportedly explored following the cancellation of Project Titan (the Apple Car) earlier in 2025.
His rationale for the move is telling. He sees humanoid robotics as the next step, the ultimate dream of the current generation. With leaps in LLMs and physical AI, Chen believes that dream is finally within reach.
For engineers who want to solve the hardest problems in physics and AI, the dream is no longer the next iPhone or Vision Pro — it’s a general-purpose robot. And right now, Tesla is one of the few companies offering the right combination of software, hardware, and AI talent to build it, he said.
Tesla’s Robotics Lab
Perhaps the most significant part of Chen’s update is his reaction to Tesla’s facilities. It is rare to get an unfiltered look at the secretive Tesla labs from a credible outsider, especially one coming from Apple, often considered a gold standard for hardware.
Chen mentioned that he was totally blown away by the scale and sophistication of the Optimus labs on a visit ahead of starting work. This is pretty significant, as it hints at just how much time, money, and effort are going into Optimus behind the scenes at Tesla’s labs in Palo Alto. Chen also had some words to say about the culture at Tesla, saying that it’s hardcore building and crazy ideas with super-fast iterations.
That’s a complete about-face from the typical slow-paced big tech, where meetings and siloed discussions run the show.
Kicking it into High Gear
For Tesla, acquiring a key researcher from Apple’s incubation group is a sign that the Optimus program is on track. It is moving on quickly from being a research experiment to shifting towards product execution. When the engineers who specialize in bringing the secret prototypes to life at Apple leave to join Tesla, it tells us a few things:
The age of humanoid robotics is coming soon, and top engineers around the world are headed to companies leading the pack. An excellent sign for Optimus and Tesla.
