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TQ Ventures led the round, with Benchmark, Nexus Venture Partners, and cybersecurity firm Zscaler among the participants

Deep Cogito raised $43 million in a Series A funding round on Wednesday to advance research into AI post-training and recursive self-improvement, bringing the San Francisco startup's total funding to more than $56 million.

TQ Ventures led the round, with participation from Benchmark, Nexus Venture Partners, Atreides Management, South Park Commons, and Zscaler, a cloud security company that joined as both a customer and strategic investor.

Deep Cogito was founded in 2024 by Drishan Arora, who serves as chief executive, and Dhruv Malrana, chief product officer. The two co-founders had previously worked together at Google $GOOGL on AI Search — Arora led Gemini post-training for AI Search, while Malrana led its product from inception, the company said.