RunSybil raises $40M
RunSybil raised $40M in funding led by Khosla Ventures and lists Baseten among its customers — the raise spotlights third‑party post‑training infra adoption across startups. That funding likely accelerates tools competing with in‑house DGX/CUDA consolidation plays. (techcompanynews.com)
RunSybil published its funding announcement on March 18, 2026 in a company press release issued from San Francisco. (runsybil.com) The round included participation from S32, Anthology Fund (Anthropic), Menlo Ventures, Conviction, and investor Elad Gil, with angel backers named such as Nikesh Arora, Amit Agarwal, and Jeff Dean. (runsybil.com) RunSybil was co‑founded in 2023 by Ari Herbert‑Voss, who previously served as OpenAI’s first security researcher, and Vlad Ionescu, who led offensive security red teams at Meta. (ainvest.com) Its Sybil product uses autonomous AI agents to perform continuous black‑box penetration testing that chains minor flaws into exploit paths, replays prior attack paths, and integrates findings into development workflows. (runsybil.com) Early customer reports cited by the company claim a reduction in false positives of over 90% compared with conventional scanning tools. (runsybil.com) Public reporting and investor materials list other early customers as Cursor, Turbopuffer, Notion, Thinking Machines Lab and several financial institutions and Fortune 500 companies. (builtinsf.com) RunSybil says proceeds will accelerate engineering hiring, expand its security research team, and fund go‑to‑market efforts to scale its autonomous offensive security product. (runsybil.com)
