Anthropic announced a $450 million Series C led by Spark Capital, with participation from Google, Salesforce Ventures, Sound Ventures, and Zoom Ventures. The company said the money would grow its product teams to support enterprise deployment of Claude, advance alignment research, and ship capabilities such as the 100K-token context window. It also said it would continue refining governance structures suited to its public benefit orientation. It announced the Long-Term Benefit Trust that September.