Adit Singh joins Mayfield as infrastructure partner focusing on AI investments

Mayfield, one of Silicon Valley’s longest-running venture firms, just added a new infrastructure partner to sharpen its AI investment thesis. Adit Singh, previously a partner at Cota Capital, will focus on semiconductor, cybersecurity, and physical AI deals at the firm. A $3 billion AI playbook gets a new operator Mayfield has been around since 1969. The firm has deployed roughly $3 billion into AI companies over its lifetime, with 70% of those checks written at inception stage. Mayfield also runs a dedicated $250 million AI Start fund targeting startups across the AI stack. The portfolio already includes semiconductor companies like Alif Semiconductor and Cognichip, plus cybersecurity plays like Aurascape AI, a generative AI security startup that closed a $12.8 million seed round led by Mayfield in September 2024. Singh’s addition is meant to accelerate that pipeline. At Cota Capital, where he served as a partner since 2021, he specialized in early-stage company building across AI and infrastructure. Mayfield’s track record and what comes next Mayfield has notched 120 IPOs and more than 225 M&A deals across its lifetime. Singh’s mandate around “physical AI” is worth watching c...