Anthropic Closes Record $65B Round as AI Infrastructure Funding Surges
Anthropic secures a historic $65 billion Series H round, reaching a $965B valuation and overtaking OpenAI as the most valuable private AI company. The final weeks of May also see massive investments in AI infrastructure and autonomous software engineering.
Anthropic raises $65 billion in a Series H round, marking the largest private funding round in tech history and pushing its post-money valuation to $965 billion. Co-led by Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital, this massive investment makes Anthropic the most valuable private AI company in the world, overtaking OpenAI. The company shows extraordinary revenue growth, with its run-rate jumping from $9 billion at the end of 2025 to over $47 billion by May 2026.
The final weeks of May highlight a strong industry focus on AI infrastructure and autonomous systems. Cognition AI secures over $1 billion in a Series D round at a $26 billion valuation, demonstrating the viability of autonomous software engineering as its AI agent, Devin, now writes 89% of the company's own code. Other significant infrastructure bets include Parallel raising $230 million for agent search infrastructure and DeepInfra securing $107 million to support its massive throughput of five trillion tokens per week.
Additional notable deals further illustrate the diverse applications attracting major capital in the AI sector. Halter brings in $220 million in New Zealand's largest venture capital raise ever, while Scout AI garners $100 million specifically for defense AI applications. Across eight weeks, the AI sector tracks over $80 billion in total capital, signaling that investors remain highly committed to funding foundational models, developer tools, and specialized AI agents.