Bessemer Venture Partners

Anthropic raises Series E at $61.5B post-money valuation

Anthropic has closed a $3.5 billion Series E round at a $61.5 billion post-money valuation, led by Lightspeed Venture Partners with participation from Bessemer, Cisco, Fidelity, General Catalyst, Salesforce Ventures, and others. Proceeds will fund next-generation AI system development, expanded compute capacity, mechanistic interpretability and alignment research, and international expansion. The raise follows the launch of Claude 3.7 Sonnet and Claude Code, with Anthropic citing strong enterprise adoption across customers including Cursor, Zoom, Snowflake, Pfizer, and Amazon's Alexa+.