The hum of a 3D printer, a familiar sound in many Belgrade workshops, was the backdrop to Marko Popovic’s early experiments. Not just any printer, but one he had meticulously assembled himself, piece by piece, in his family’s apartment. This wasn't a hobby for him, it was an obsession, a relentless pursuit of understanding how the digital could become physical, and more importantly, how it could be intelligently understood. Today, that same drive fuels 3D.ai, his company that is quietly becoming a significant player in the burgeoning field of spatial AI, a world where Apple’s Vision Pro is just one piece of a much larger puzzle.
Popovic, a man whose calm demeanor belies a fierce intellectual curiosity, is not one for grand pronouncements. He prefers to let the technology speak for itself. "We are not just rendering pixels," he told me during a recent video call, his voice clear despite the distance, "we are teaching machines to comprehend space, to interact with it, to make sense of the world the way humans do, but with far greater precision and scale." This is the essence of 3D.ai's mission: to build the foundational AI that powers spatial computing, making 3D data actionable and intelligent.
Marko’s journey began not in the gleaming campuses of Silicon Valley, but in the vibrant, often challenging, tech landscape of Belgrade. Born in 1985, he grew up during a period of significant upheaval in Serbia, a time when resourcefulness was not just a virtue, but a necessity. This environment, he believes, forged a different kind of innovator. "The Balkans have a different relationship with technology," he explained, "we learn to build with what we have, to find creative solutions, and to be resilient when things don't go as planned." This pragmatism is evident in 3D.ai's lean, focused approach.
His formal education took him to the Faculty of Electrical Engineering at the University of Belgrade, a renowned institution that has produced countless talented engineers. It was there that his fascination with computer graphics and artificial intelligence truly blossomed. He spent countless hours in labs, pushing the boundaries of what was possible with limited computing power, often fueled by strong Serbian coffee and an unwavering belief in the potential of his ideas. After graduation, he honed his skills at various tech companies in Belgrade, gaining practical experience in software development and 3D modeling, always with an eye toward the bigger picture: how to make machines see and understand.
The pivotal moment for 3D.ai came when Marko realized the gaping chasm between the abundance of 3D data being generated and the lack of intelligent systems to process and utilize it. Augmented reality and virtual reality were gaining traction, but the underlying intelligence to make these experiences truly immersive and useful was missing. He saw that while companies like Apple were building impressive hardware like the Vision Pro, the software layer, particularly the AI that could interpret and interact with complex 3D environments, was still nascent. He co-founded 3D.ai with a small team of equally passionate engineers and researchers, many of whom he had known from his university days or previous jobs in Belgrade.
Building 3D.ai was not without its challenges. Securing early funding in Serbia for a deep tech venture, especially one as ambitious as spatial AI, required immense perseverance. "We weren't selling a quick app or a simple service," Popovic recalled, "we were proposing a fundamental shift in how machines understand reality. That takes time, and it takes investors who share that long-term vision." They bootstrapped for a significant period, relying on consulting gigs and small grants to keep the lights on and the research going. Their breakthrough came with developing proprietary algorithms that could efficiently process vast amounts of 3D point cloud data, transforming raw sensor input into semantically rich, AI-ready spatial models. This technology became the backbone of their platform.
Today, 3D.ai's platform is being used by a growing number of enterprises, particularly in sectors like industrial design, robotics, and smart infrastructure. Their AI models can take scans of complex environments, identify objects, understand their relationships, and predict interactions, all in real time. This is crucial for applications ranging from autonomous robots navigating warehouses to digital twins of entire cities. While Apple's Vision Pro focuses on the consumer experience, 3D.ai is building the enterprise-grade intelligence that could eventually power those experiences on a much grander scale. They are enabling machines to not just see in 3D, but to think in 3D.
Growth has been steady and organic. The company has attracted talent from across Europe, drawn by the challenging technical problems and the opportunity to work on truly foundational technology. "Belgrade's tech scene is real, not hype," Popovic stated, a hint of pride in his voice. "We have exceptional engineers, and a culture of innovation that is often overlooked." The company recently closed a significant Series A funding round, reportedly in the tens of millions of dollars, from a mix of European and US venture capital firms, a testament to the growing recognition of their unique capabilities. This funding is allowing them to expand their research and development efforts, particularly in the area of generative AI for spatial data.
What drives Marko Popovic is not the pursuit of a quick exit or celebrity status, but a deep-seated belief in the transformative power of spatial intelligence. He sees a future where AI understands our physical world as intimately as it understands our digital one, leading to unprecedented efficiencies and entirely new forms of human-computer interaction. "Imagine a factory floor where every machine, every product, every worker is understood in real time by an AI that optimizes everything," he mused. "Or a surgeon practicing complex procedures in a perfectly simulated, intelligent 3D environment. This is what we are building."
Looking ahead, 3D.ai is focused on further democratizing access to spatial AI. They are working on making their platform more accessible to developers, allowing them to integrate sophisticated 3D understanding into their own applications. They are also exploring partnerships with hardware manufacturers, including those developing next-generation spatial computing devices. "Let's talk about what's actually working," Popovic concluded. "What's working is that the world is becoming 3D, and AI needs to catch up. We are making sure it does." The quiet revolution from Belgrade continues, proving that profound technological shifts can emerge from anywhere, driven by vision and relentless engineering. For more on the broader implications of spatial computing, one might look to analyses from MIT Technology Review. The advancements in AI for complex data processing are also frequently covered by TechCrunch. For those interested in the business side of this burgeoning field, Bloomberg Technology often provides insightful coverage.
