Jay Li Proception is a founder story that began with a lawsuit before it became a funding story. Li is the co-founder and CEO of Proception, a Palo Alto robotics startup building dexterous robotic hands for humanoid robots, and for nearly a year his young company was defined as much by litigation as by its technology. In June 2026, on the same day Tesla’s trade-secret lawsuit against him was settled and dismissed, Proception announced an $11 million seed round led by First Round Capital and shipped its first commercial robotic hands. Here is how a former Tesla Optimus engineer built a company under legal pressure most first-time founders never face, and why investors backed him anyway.
Table of Contents
- Jay Li Proception: Who Is He?
- From Apple and Tesla to Founding Proception
- The Tesla Lawsuit: What Happened and How It Was Resolved
- The Problem Proception Set Out to Solve
- Building Proception: Team, ProHand, and ProGlove
- Inside Proception’s $11 Million Seed Round
- Early Traction: Shipping ProHand to Researchers and Robotics Companies
- The Investors Backing Jay Li After the Lawsuit
- Proception’s Position in the Dexterous Manipulation Race
- Leadership Style and What’s Next for Proception
- Lessons for Entrepreneurs From Jay Li’s Story
- Frequently Asked Questions
- Conclusion
Jay Li Proception: Who Is He?
Zhongjie “Jay” Li is a robotics engineer and entrepreneur, and a Stanford University alumnus, according to his Crunchbase profile and LinkedIn profile. Before founding Proception, he worked at Tesla from August 2022 to September 2024, where he served as a technical lead on the electronics side of the company’s Optimus humanoid robot program, according to court filings. His work there focused specifically on advanced robotic hand sensors, the same technical domain his own company would go on to build in.
Li co-founded Proception in September 2024 with Jack “Jianxiang” Xu, a robotics software engineer, just days after leaving Tesla. The company is based in Palo Alto, California, and now employs around ten people, according to its Y Combinator company profile.
From Apple and Tesla to Founding Proception
Before Tesla, members of Proception’s founding team worked on consumer electronics at Apple that reached millions of users, according to the company’s own Y Combinator launch post, in addition to Li’s robotics work at Tesla and earlier-stage startups. That combination, consumer hardware discipline from Apple and humanoid robotics experience from Tesla, shaped how Proception approached its own hand hardware: engineered for manufacturability and durability, not just laboratory demonstrations.
Li’s two years at Tesla placed him at the center of one of the industry’s most closely watched robotics programs, working on the sensors that let Optimus’s hands perceive contact and pressure. That experience gave him a firsthand view of exactly how difficult dexterous manipulation is to solve, a problem he decided to pursue independently rather than continue solving only for Tesla’s own robot.
The Tesla Lawsuit: What Happened and How It Was Resolved
In June 2025, Tesla filed a federal lawsuit against Li and Proception in Northern California, alleging that Li downloaded confidential files related to Optimus’s robotic hand sensors onto personal devices in the weeks before resigning, then used that information to start a competing company. According to the complaint, Proception publicly claimed to have built advanced humanoid robotic hands within five months of incorporating, hands Tesla alleged bore “striking similarities” to designs Li had worked on internally. Tesla sought both damages and a court order restricting further use of the disputed technology.
Li and Proception did not publicly litigate the underlying merits of Tesla’s claims in the press. After roughly a year of legal proceedings, the two sides reached a settlement, and Tesla dismissed the lawsuit in June 2026; the terms of the settlement were not disclosed, and Tesla did not respond to press requests for comment. Speaking to TechCrunch shortly afterward, Li described the ordeal in personal terms, calling it “kind of like a resilience test, or pressure test.” He argued the experience left the company stronger rather than derailing it.
The episode reflects a broader tension across the humanoid robotics industry: as companies like Tesla invest billions into programs such as Optimus, the engineers who build that expertise are simultaneously the most sought-after talent for rival and adjacent startups, a dynamic that has already produced multiple trade-secret disputes across the sector.
The Problem Proception Set Out to Solve
Robotics has advanced faster in perception, navigation, and locomotion than in one specific area: hands. Most robots today, including many humanoid platforms, still rely on simple grippers that work adequately in structured environments but struggle with tasks that require fine motor control, variable grip pressure, or frequent repositioning, the kind of contact-rich manipulation humans perform without thinking.
Northwestern University robotics director Kevin Lynch has estimated that robotic hands matching genuine human dexterity are likely a decade away, and Tesla CEO Elon Musk has separately called robot hands one of the industry’s hardest unresolved engineering problems. Proception’s bet is that most humanoid robotics companies would rather buy a solved hand than spend years building one internally, creating room for a dedicated hands supplier to serve the entire industry rather than a single robot maker.
Building Proception: Team, ProHand, and ProGlove
Jay Li Proception’s flagship product is ProHand 1.0, a 22-degree-of-freedom, tendon-driven robotic hand in which motors pull cables to move individual finger joints, similar to how muscles and tendons operate in a human hand. According to the company, hand surgeons contributed input on the design of ProHand’s skin-like tactile sensors, which detect contact and pressure during gripping and object handling.
Alongside ProHand, Proception also launched ProGlove, a wearable sensor glove built from the same tactile “skin” technology used in the hand itself. ProGlove lets a person wear the glove, interact with real objects, and capture human manipulation data without needing a robot in the loop at all; paired with a headset for visual context, that data can then be used to train ProHand’s manipulation models. Li has described the company’s core thesis as combining highly dexterous hardware with highly scalable training data, arguing that solving dexterous manipulation requires both together rather than either alone.
Inside Proception’s $11 Million Seed Round
Proception announced an $11 million seed round in June 2026, led by First Round Capital, with participation from Y Combinator and BoxGroup. The company says the funding will support hiring, scale production of ProHand, and continue building out its hardware and data infrastructure.
Bill Trenchard, the First Round Capital partner who led the investment, pointed to Proception’s technical execution and the underlying data pipeline behind ProHand as central reasons for backing Li, and specifically praised how the founding team handled the Tesla litigation without losing focus or investor confidence during the process.
Early Traction: Shipping ProHand to Researchers and Robotics Companies
Unlike many seed-stage hardware startups still working toward a first shippable product, Proception began shipping its first batch of ProHand units to researchers and robotics companies the same week it announced funding, with plans to open broader orders shortly after. That combination, a resolved legal dispute, fresh capital, and an actual product shipping on the same timeline, is a distinctive traction signal for a hardware company barely two years old.
Proception has not publicly named its early hand customers, but has positioned ProHand as infrastructure for any humanoid robotics company that does not want to spend years developing dexterous manipulation hardware internally, rather than a product built for one single buyer.
The Investors Backing Jay Li After the Lawsuit
First Round Capital’s decision to lead Proception’s seed round despite an unresolved lawsuit at the time of due diligence is notable in itself; venture investors typically treat active IP litigation as a serious red flag. That First Round, Y Combinator, and BoxGroup all committed capital before the Tesla case was even settled suggests investors weighed Proception’s technical progress and Li’s transparency about the dispute more heavily than the legal overhang itself.
That calculus mirrors a broader pattern in deep tech investing: specialized technical talent, particularly from programs as closely watched as Optimus, carries enough perceived value that sophisticated investors are willing to underwrite meaningful legal risk to back it.
Proception’s Position in the Dexterous Manipulation Race
Proception operates in a specialized corner of humanoid robotics sometimes called dexterous manipulation hardware, distinct from companies building full humanoid platforms or general-purpose robot foundation models. Competitors and adjacent players include other robotic-hand specialists as well as humanoid robot makers building hands internally rather than sourcing them.
Proception’s differentiation is its position as a dedicated component supplier rather than a full-robot company, paired with its data-collection approach through ProGlove, which lets the company gather human manipulation data independent of any specific robot platform. That combination allows Proception to sell into the broader humanoid supply chain rather than competing directly with any single humanoid robot maker.
Leadership Style and What’s Next for Proception
Li’s public framing of the lawsuit, resilience and execution rather than grievance, reflects how he has chosen to lead Proception through its most difficult stretch. Rather than litigating Tesla’s claims in public statements, he focused the company’s communications on product milestones and team execution, a discipline that appears to have reassured investors during a period when the company’s legal exposure was still unresolved.
With ProHand now shipping and fresh seed capital in hand, Proception’s near-term roadmap centers on scaling production, expanding ProGlove’s data-collection footprint, and deepening relationships with humanoid robotics companies that need dexterous hands but do not want to build them internally.
Lessons for Entrepreneurs From Jay Li’s Story
Li’s path offers a pointed lesson for founders leaving specialized, high-stakes technical programs to start companies in adjacent territory: the legal exposure is real, settlement terms will often constrain what you can say publicly, and investor confidence depends heavily on transparency during the dispute rather than after it resolves. Second, Proception’s ProGlove product shows the value of building a data-collection strategy that does not depend on the core hardware being finished first; the glove let the company gather training data in parallel with hand development rather than sequentially. Third, Li’s public composure during litigation, choosing to talk about resilience and execution rather than the specifics of Tesla’s claims, appears to have preserved investor trust through a period that could easily have collapsed it.
Frequently Asked Questions
Who is Jay Li? Jay Li, whose full name is Zhongjie Li, is the co-founder and CEO of Proception, a robotics startup building dexterous robotic hands. He previously worked as a technical lead on Tesla’s Optimus humanoid robot program from 2022 to 2024.
What does Proception do? Proception builds ProHand, a 22-degree-of-freedom tendon-driven robotic hand designed for humanoid robots and researchers, along with ProGlove, a wearable sensor glove that collects human hand-manipulation data to train ProHand’s models.
What was the Tesla lawsuit against Jay Li about? Tesla sued Li and Proception in June 2025, alleging Li downloaded confidential files related to Optimus’s robotic hand sensors before resigning and used that information to build Proception’s hands. The case was settled and dismissed in June 2026, with terms undisclosed.
How much funding has Proception raised? Proception raised an $11 million seed round announced in June 2026, led by First Round Capital, with participation from Y Combinator and BoxGroup.
Who co-founded Proception with Jay Li? Proception was co-founded by Jay Li (CEO) and Jack “Jianxiang” Xu, a robotics software engineer, in September 2024.
What is ProHand? ProHand is Proception’s flagship product: a 22-degree-of-freedom, tendon-driven robotic hand with skin-like tactile sensors, designed to give humanoid robots and researchers human-like precision in gripping and manipulating objects.
What is ProGlove? ProGlove is a wearable sensor glove built from the same tactile sensor technology used in ProHand. It lets a person collect real human hand-manipulation data without a robot in the loop, which is then used to train ProHand’s control models.
Where is Proception based? Proception is based in Palo Alto, California, and employs around ten people, according to the company’s Y Combinator profile.
Conclusion
Jay Li Proception is a rare case of a founder story shaped as much by a resolved legal dispute as by its underlying technology. With Tesla’s lawsuit settled, an $11 million seed round from First Round Capital in hand, and ProHand units already shipping to researchers and robotics companies, Proception enters the dexterous manipulation race with more real-world validation, and more built-in scrutiny, than most seed-stage hardware startups. Whether robot hands remain a decade away from human-level dexterity or arrive sooner, Proception is betting its hands, not Tesla’s, will get there first.
For more founder stories in robotics and physical AI, see Puru Rastogi’s Mowito, Ben Volkow’s QIZ Security, and Fei-Fei Li’s World Labs on Denote Press.
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