Serve Robotics has agreed to acquire healthcare robotics company Diligent Robotics, marking its first move beyond outdoor, sidewalk-based delivery and into indoor environments such as hospitals.
The deal brings Diligent’s autonomous hospital robot, Moxi, into Serve’s portfolio and expands the company’s autonomy platform into healthcare settings that require high reliability, safety, and close interaction with people.
Diligent Robotics was founded in 2017 by Andrea Thomaz and Vivian Chu and has raised more than $100 million from investors including Tiger Global, Canaan, and True Ventures.
The company develops AI-powered robot assistants designed to support clinical staff by handling routine logistics tasks inside hospitals.
Its Moxi robot is currently deployed in more than 25 hospital facilities across the United States, making it one of the largest commercial deployments of mobile manipulation robots in healthcare.
According to the companies, Moxi robots have completed more than 1.25 million autonomous deliveries, supporting nurses and hospital staff by transporting supplies and equipment.
Serve said the acquisition allows it to extend its autonomy platform into indoor, human-centric environments, where navigation, safety, and interaction challenges differ significantly from outdoor delivery.
Dr Ali Kashani, CEO of Serve Robotics, says: “This acquisition accelerates Serve’s evolution from a robotic delivery company into a full-stack autonomy platform.
“We’ve proven we can deploy robots safely and reliably at scale in complex urban environments. By extending our platform beyond sidewalks and into hospitals, we’re expanding where our Physical AI can operate, learn, and create value.
“Over time, Serve and Moxi will share one autonomy stack, one data flywheel, and one operating system for robots that work alongside people across city sidewalks and critical institutions. This is how autonomy becomes infrastructure.”
Hospitals introduce dense, multi-level environments with constant human activity, doorways, elevators, and unpredictable edge cases.
Serve said experience gained from Moxi’s daily operation in these conditions will feed back into a shared autonomy stack, helping improve learning, deployment speed, and scalability across its wider fleet.
Diligent’s customers include healthcare systems such as Northwestern Medicine, ChristianaCare, and Rochester General Hospital. Moxi robots are powered by Nvidia Jetson for onboard computing and are trained and tested using Nvidia Isaac simulation tools.
The acquisition is also expected to provide Serve with access to healthcare use cases that generate higher revenue per robot compared with last-mile delivery. Serve said each hospital deploying Moxi robots is expected to generate between $200,000 and $400,000 in annual revenue.
Diligent Robotics will continue to operate as a subsidiary of Serve under the leadership of Andrea Thomaz.
Thomaz says: “Diligent was founded to help healthcare teams do more with their limited resources.
“By joining Serve, we can build on the autonomy and AI we’ve deployed across live hospital fleets and scale it faster, enabling more intelligent, capable robots in care environments.
“Together, we’re unlocking the next phase of practical, real-world robotics and advancing a people-plus-robots model that prioritizes human impact.”
Under the terms of the agreement, Serve will acquire Diligent in a transaction valued at $29 million in Serve common stock, subject to adjustments, with a potential earn-out of up to $5.3 million tied to performance milestones.
The transaction is expected to close in the first quarter of 2026, subject to customary closing conditions and regulatory approvals.
