Matthias Niessner: Turning Unicorn Success into the Next AI Revolution
SpAItial AI is a Munich-based AI startup developing Spatial Foundation Models (SFMs), AI systems that can understand the real world and create immersive 3D virtual environments. Behind the company is Matthias Niessner, co-founder of unicorn Synthesia and professor at the Technical University of Munich (TUM).
THE FOUNDER STORY
What is it like to found a unicorn? We asked Matthias this question when he sat down on the couch in our gate lounge, ready for his interview. He paused for a moment:
“It’s exciting. It’s a good testament of success. But I think a unicorn also creates new bars, and you have to think about what comes afterwards.”
For Matthias, the success of Synthesia, one of Europe’s leading generative AI companies, was only the beginning. His passion for generative AI research and the timing of rapid progress in 3D AI led him to start something new: SpAItial AI.
In the video Matthias tells us his story:
WHAT SPAITIAL AI DOES
At SpAItial AI, the team is building spatial foundation models that can create virtual worlds resembling the real world in both look and behavior.
Some examples include:
- Gaming: A 10-year-old can type in some text and get their own video game.
- Film production: Generate 3D environments and assets for Hollywood-quality movies.
- Architecture: Take a picture of your apartment and instantly receive a virtual digital copy.
- Engineering & Manufacturing: Create models and assets for industrial use cases.
Unlike 2D image generators like DALL·E or Stable Diffusion, SpAItial AI can turn simple text prompts into explorable 3D worlds.
WHY MUNICH AND THE GATE GARCHING ARE THE PERFECT PLACE TO FOUND A STARTUP
For Matthias, Munich is the ideal place to build the next AI revolution.
The advantages of Munich include:
- Proximity to TUM → access to outstanding student talent
- Entrepreneurial support → structures like UnternehmerTUM and MakerSpace
- gate Garching → a startup community with leading deep-tech founders
“We wanted to stay connected with the university, so the gate Garching was an obvious choice. We also looked at other options on campus, but the vibrant startup culture at the gate really stood out. That was the deciding factor for us, joining an inspiring community of founders to build the next generation of startups.“
The Garching Science Campus is often overlooked when it comes to startups. Our article “Why Startups Succeed at the Garching Science Campus” shows what makes this location special – especially for technology-driven founders.
THE SPAITIAL AI TEAM AND ACHIEVEMENTS
Although SpAItial AI is still in its early building phase, the company already has a world-class team: top researchers and leads from Google and Meta who have worked on generative AI in 3D.
The next big milestone is to finalize the internal model and make it available to early partners. Discussions are already underway to design APIs and use cases for industries like design, gaming, and engineering.
This looks like a team set up for success:
ADVICE FOR FOUNDERS
Drawing from his journey with Synthesia and now SpAItial AI, Matthias offers advice for entrepreneurs:
“The biggest challenge for AI startups is the transition from research to product-market fit. Many people can build amazing prototypes, but turning them into products that millions use—that’s the hardest part.”
Do you want to get monthly tips for success, stories, and inspiration? Become a gate insider now and subscribe to the Grow Your Startup newsletter
He stresses that the timing of founding is crucial
- Start when the technology is advanced enough to become practical, but still early enough that the market is not crowded.
- This was exactly the case with Synthesia in 2017: the research was promising, but large-scale applications were not yet possible. That gap created an opportunity.
Matthias also highlights the importance of having a secret sauce
- Be outstanding at one thing, much better than everyone else.
- For him, that “secret sauce” has always been deep technical expertise, developed through years of research at Stanford and TUM.
- His roadmap: do something deeply technical, gain unique expertise, and then translate that into a product.
“If you’re not the expert, or don’t have one on your founding team, it’s much harder to succeed—especially in AI. That’s why building a strong team around your core expertise is critical.”
Finally, he emphasizes the mindset
- Don’t cling to past success: every startup is a new game with new challenges.
- Focus on learning speed: the best founders adapt quickly when the market shifts.
- Think beyond the prototype: the biggest challenge for AI companies is making the transition from R&D to creating a real business out of it… finding the right product market fit especially for AI companies is very tricky. Fundraising, scaling, hiring, and customer trust are just as important as the technology itself.
In short, his advice is clear: Find your edge, build the right team, and be ready to reinvent yourself at every stage.
As a tech founder, you benefit at the gate Garching from proximity to TUM, UnternehmerTUM, and a strong startup network with founders like Matthias. Discover more at our next FAQ event „Is joining a tech startup incubator your next smart step?“
FAQS ABOUT SPAITIAL AI
What is SpAItial AI?
SpAItial AI is a Munich-based AI startup building Spatial Foundation Models that create realistic, explorable 3D virtual worlds.
Who founded SpAItial AI?
The company was founded by Matthias Niessner, professor at TUM and co-founder of unicorn Synthesia and his co-founders Ricardo Martin-Brualla, David Novotny, Luke Rogers.
What applications do Spatial Foundation Models have?
They can be used for gaming, film production, architecture, engineering, and robotics.
Why Munich and gate Garching?
SpAItial AI benefits from the talent of TUM, the support of UnternehmerTUM, and the deep-tech community at the gate Garching.
SpAItial AI joined the incubator gate Garching in 2025 and is now ready to scale with our support. We welcomed them with our „Müsli Übergabe“ so set the bar.
Be part of the startup community at the gate Garching. Find out more about your benefits on our website.
HANDPICKED RELATED CONTENT
Why Startups Succeed at the Garching Science Campus
allunderground: How a Munich Startup is Revolutionizing Drilling Technology