Walden Robotics, a Physical AI (artificial intelligence) company headquartered in Cambridge, Massachusetts, emerged from stealth on July 15, 2026, <cite index="10-1">announcing $300 million in funding and the deployment of general-purpose robots that continuously learn and improve while performing real work.</cite>
Funding and Backers
<cite index="10-5">The round, valuing the company at $1.1 billion, is co-led by Toyota — through Toyota Motor Corp., Toyota Invention Partners, and Toyota Ventures — and Deviation Capital, with participation from NVIDIA, Boeing, AE Ventures, Samsung Ventures, Prologis Ventures, CoreWeave Ventures, and financial partners including Calibrate Ventures, Colle Capital, Shine Capital, NextView Ventures, Squarepoint Capital, One Madison Group, KAS Venture Partners, and Menlo Ventures, among others.</cite> The seed round represents one of the largest stealth-stage raises in the physical robotics sector to date.
Origins and Leadership
<cite index="8-7">Founded in January 2026 as a spinout from Toyota Research Institute (TRI), Walden Robotics is commercializing years of robotics research focused on giving machines the ability to learn useful physical skills instead of relying on hard-coded instructions.</cite> <cite index="14-5">Co-founder and CEO Dr. Russ Tedrake is a professor at MIT and former Senior Vice President of Large Behavior Models at Toyota Research Institute.</cite> <cite index="9-7">Founding head of hardware Andy Marchese spent more than a decade at Amazon Robotics.</cite>
Robot Design and AI Architecture
Rather than pursuing a fully bipedal form factor, <cite index="1-6">Walden equips its robots with a humanoid upper body mounted on a wheeled mobile base, arguing the design is better suited to factory work.</cite> <cite index="9-2,9-3,9-4">The wheeled configuration was chosen in part because the manufacturing industry has approved safety standards for rolling machines but not yet for walking robots. "We don't have the same maturity of safety standards for robots with legs," Tedrake said. "The way to move fast and be productive in factories is with a wheel base."</cite>
On the software side, <cite index="13-5">Walden's product builds on a decade of foundational AI and robotics research, including Diffusion Policy and Large Behavior Models (LBMs) — the frontier model class that powers Walden's robots and lets them quickly learn new tasks and continuously improve through real-world practice.</cite> <cite index="16-4">Similar to how large language models (LLMs) learn patterns from massive amounts of text, LBMs learn physical actions by connecting sensor inputs and natural language instructions with robot behavior.</cite> <cite index="16-5">The company combines those models with Diffusion Policy, a machine learning technique that allows robots to acquire complex, multi-step skills by learning from human demonstrations.</cite>
Live Deployment
<cite index="13-7">Since February, Walden's general-purpose robots have been performing useful work in production at a Toyota plant in North America, moving from first pilot to real work in under two months.</cite> <cite index="6-4">The wheeled, upper-body humanoids are already working eight-hour shifts inside the Toyota plant, loading and unloading car parts, cleaning machinery, and kitting components for assembly alongside human employees.</cite>
Market Context and Target Industries
<cite index="11-4">Walden says its full-stack approach — combining hardware, AI, and deployment software — targets industries including automotive, aerospace, semiconductors, electronics, logistics, and life sciences.</cite> <cite index="16-10,16-11">Manufacturers across North America continue to face labor shortages, higher operating costs, and pressure to increase production without sacrificing quality, making general-purpose robots that can learn multiple jobs rather than perform a single repetitive task one of the industry's biggest goals.</cite>
<cite index="15-4">Walden enters an increasingly crowded physical AI market, where startups including Figure, Apptronik, and Agility Robotics are racing to commercialize general-purpose humanoids.</cite>