Walden Robotics Emerges From Stealth With $300 Million Toyota-Backed Round at $1.1 Billion Valuation
MIT spinout Walden Robotics raised $300 million led by Toyota and Deviation Capital, and has run wheeled humanoid robots at a Toyota plant since February.
Editor's Note ·
- Correction:
- The article quotes CEO Russ Tedrake as saying, "The barrier to entry has gone way, way down for training robots. You don't have to write any new code." The Boston Globe, the cited source, actually quotes Tedrake saying "The barrier to entry has gone way, way down" as a standalone remark — the phrase "for training robots" was the reporter's own bridging language, not part of the quotation — followed by a separate quote: "You don't have to write any new code. You just have to show some demonstrations to the robot, and the robot can learn the new task." The article's version merges the reporter's phrase into the quotation marks and omits the second half of the sentence without indicating the cut. The substance of Tedrake's point is unchanged.
Overview
Walden Robotics, a Cambridge, Massachusetts startup spun out of the Toyota Research Institute, emerged from stealth on July 15 with $300 million in funding at a $1.1 billion valuation, according to The Robot Report. The round was co-led by Toyota Motor Corp., Toyota Invention Partners, Toyota Ventures, and Deviation Capital, with NVIDIA, Boeing, Samsung Ventures, Prologis Ventures, and CoreWeave Ventures among the additional participants, The Robot Report reported. The Boston Globe described the announcement as giving “the Boston robotics scene” a “jolt on Wednesday.”
What We Know
Walden was founded in January 2026 as a spinout of Toyota Research Institute and is based in Cambridge, Massachusetts, according to The Robot Report and Walden’s own announcement. The company is led by chief executive Dr. Russ Tedrake, an MIT professor who previously served as Senior Vice President of Large Behavior Models at Toyota Research Institute, according to Walden’s team page.
Walden’s leadership team draws heavily from Toyota Research Institute. Chief technology officer Ben Burchfiel previously worked at Aurora Innovation on machine-learning models for autonomous driving and, at Toyota Research Institute, co-led the robot-learning organization behind Diffusion Policy and OpenVLA, according to the company’s team page. Chief strategy officer Adrien Gaidon is an adjunct professor at Stanford University and a former executive director of the machine-learning division at Toyota Research Institute, the team page states. Chief product officer David Johnson previously directed Sony’s Robotic Gastronomy project after founding and selling Dexai Robotics, a kitchen-robotics company, Walden says — a Dexai-to-Sony history also reported by the Boston Globe.
The company’s robots pair large behavior models with Diffusion Policy, a machine-learning approach that lets the machines learn tasks from human demonstrations rather than hard-coded instructions, according to TechStartups. Physically, the robots combine a humanoid torso and two arms with a wheeled base rather than legs, The Robot Report reported, and are trained through imitation learning, simulation, and teleoperation. Tedrake explained the design choice to the Boston Globe: “We don’t have the same maturity of safety standards for robots with legs. The way to move fast and be productive in factories is with a wheel base.”
Walden’s robots have been running at a Toyota manufacturing plant in North America since February 2026, moving from an initial pilot to production work in under two months, according to The Robot Report and Walden’s announcement. At the plant, the robots perform car-part transportation, machinery cleaning, assembly kitting, machine tending, tool setting, and parts preparation, according to TechStartups. Walden is targeting the automotive, aerospace, semiconductor, electronics, and life-sciences industries, The Robot Report said.
On the business model, Tedrake told the Boston Globe: “Robots as a service is the way we’re going right now.” He also framed the broader shift enabling the company’s approach: “The barrier to entry has gone way, way down for training robots. You don’t have to write any new code.”
In a statement carried by RoboticsTomorrow, which mirrors Walden’s press release, Tedrake said: “Core advances in Physical AI, and all of the excitement and attention surrounding it, has made disruptive change possible. But providing real value to customers and building a robust and scalable business requires a deep understanding and respect for how manufacturing is done today. The best way to make fast and positive progress is by working closely together with the real experts.” Toyota Motor Corporation executive vice president Hiroki Nakajima said, according to the same RoboticsTomorrow report: “Toyota is proud to support Walden and has high expectations for this investment and the deep strategic partnership we are building together… This reflects the values shared by Toyota and Walden, including kaizen, jidoka, and a strong commitment to supporting and developing people.” Deviation Capital founding partner Colin Beirne added, per the same report: “The Walden team is generational, bringing together a rare, interdisciplinary group of experts spanning foundational robotics research, large-scale production hardware, and operational and business leadership.”
The Boston Globe reported that the deal ranks among the largest ever for Boston’s robotics ecosystem, trailing only fundraising rounds by autonomous-vehicle company Motional.
What We Don’t Know
Walden has not disclosed unit economics for its robots-as-a-service model, pricing, or a timeline for expanding beyond its current Toyota deployment to other customers or industries. The company also has not detailed how many robots are currently deployed at the Toyota facility or published performance metrics such as task success rates or throughput gains.