C3.ai is an enterprise AI software company providing a platform plus prebuilt industry applications for large organizations, founded in 2009 by veteran enterprise software entrepreneur Thomas M. Siebel, who had previously founded Siebel Systems. The company went public on the NYSE under the ticker AI, and focuses on packaged AI applications for sectors like energy, manufacturing, and government rather than a general-purpose developer platform.
Siebel resumed the CEO role directly in May 2026 after a period under interim leadership, continuing as Founder, Chairman, and CEO with President Stephen Ehikian reporting to him. The company's fiscal 2026 results showed a substantial loss alongside a restructuring plan targeting significant annualized cost savings, reflecting broader pressure across enterprise AI software providers to demonstrate a path to profitability.