The venture capital firm made the investment out of its near-US$800-million growth fund. Other backers in the San Francisco-based startup’s Series B round include Nvidia; Silicon Valley funds Sequoia Capital and Benchmark; the venture arms of Adobe and Toyota; and Canadian AI researcher Andrej Karpathy. (The Logic)

Talking point: According to PitchBook data, this is the second-largest round of investment Radical has led or co-led—after it co-led Cohere’s $600 million financing last September—and the largest it has led by itself. (Radical said it doesn’t comment on where deals rank by size.) In a post, Radical managing partner Jordan Jacobs said Decart has “among the most extraordinary technical teams we’ve ever seen.” The company is building world models, a new kind of AI system designed to produce more realistic video and virtual environments, and to help control IRL applications like robots and autonomous vehicles. Decart also sells optimization tools to route the work of training and running AI tools across chips from different hardware providers. It’s Radical’s latest bet on technology that’s likely to be core to the AI future, having previously backed startups in similar areas like World Labs and CentML, since acquired by Nvidia.