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Rivian acquires UK world-model startup Third Dimension AI to accelerate self-driving push
Rivian announced the completed acquisition of 15-person UK startup Third Dimension AI; the team joins James Philbin's Autonomy & AI group to scale synthetic data and full-world simulation for driver-assist and robotaxi development. Deal terms were not disclosed.
Why it matters
World models turn driving footage into controllable, high-fidelity 3D environments, letting automakers train and validate self-driving systems with synthetic data instead of waiting for rare road scenarios to occur in real life. Rivian receives more than 400,000 video sequences a day from consenting customer vehicles, and the acquisition directly scales its simulation capability — critical for its R2 robotaxi roadmap with Uber.
Full report
Electric-vehicle maker Rivian Automotive announced on Oct 22 that it has completed the acquisition of Third Dimension AI, Inc. (official Business Wire release). Financial terms were not disclosed.
Third Dimension AI is a UK startup founded in 2024 by CEO Tolga Kart and Piotr Sokólski. Its 15-person team, based mostly in the UK, builds "world model" AI that converts images and video into controllable, photorealistic 3D environments.
Following the deal, the team joins Rivian's Autonomy & AI division led by James Philbin (SVP, Autonomy & AI), and the acquisition expands Rivian's AI hub in London.
The goal is to generate synthetic data from real fleet data and run full-world simulation, accelerating driver-assist features and self-driving systems — particularly the R2 robotaxi developed for Uber — without waiting for rare edge cases to occur on real roads. Philbin said: "Simulation is central to how we train and validate our autonomous driving systems… will strengthen and accelerate autonomy across our consumer and robotaxi roadmaps."
Third Dimension previously raised a $7M seed round from investors including Abstract Ventures, MVP, Soma Capital and Solari Capital; its technology was originally aimed at speeding up game development, and TechCrunch notes Rivian has no plans to enter the gaming industry. Kart said: "Joining Rivian allows us to deploy our simulation technology at scale."
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