Cognition has raised over $2 billion in a Series E round at a $48 billion valuation, the AI software-engineering company announced on September 8, 2026. New investors Andreessen Horowitz and Accel led the round, joined by existing investors Founders Fund, General Catalyst, and Avenir. The company’s Series E announcement lists a broad syndicate of additional participants: Benchmark, Bessemer, Kleiner Perkins, Greylock, Lightspeed, Altimeter, Bond Capital, Meritech, Atreides, Valor, T. Rowe…