Rox Raises $100M Series B at $1.3B Valuation to Advance AI Research

Reuters reported on November 11, 2026, that Rox had raised $100 million in a Series B round valuing the San Francisco-based startup at $1.3 billion. General Catalyst and March Capital co-led the financing as Rox prepares to expand its AI research and enterprise reach. Existing investors Sequoia Capital and Factory participated alongside new investors Databricks Ventures and Prosperity7 Ventures. Rox said it will put the capital toward AI research and custom-model development while widening its…

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