Anthropic closes $65B Series H at $965B, overtakes OpenAI as most valuable AI startup
Anthropic has closed a $65 billion Series H funding round at a $965 billion post-money valuation, announced May 28, 2026, making it the most valuable private AI company in the world—surpassing OpenAI's $852 billion valuation from March 2026. The round was led by Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital, with co-leads including Capital Group, Coatue, D1 Capital Partners, GIC, ICONIQ, and XN. Strategic infrastructure partners Micron, Samsung, and SK hynix also invested, signaling confidence in Claude's compute demands.
Anthropic disclosed that its run-rate revenue crossed $47 billion in late May 2026, a staggering jump from $30 billion just six weeks prior (February Series G) and $1 billion at the start of 2025. Claude Code alone exceeded $2.5 billion ARR by February 2026, making it one of the fastest-growing software products ever. The company reported first operating profitability is projected for Q2 2026, with Wall Street Journal sources expecting 130% revenue growth year-on-year.
The round includes $15 billion of previously committed hyperscaler investments, including $5 billion from Amazon (announced April 2026). Newly committed capital totals ~$50 billion. Anthropic signed major compute deals: 5 GW additional capacity with AWS, 5 GW of next-gen TPU capacity with Google and Broadcom, and GPU access through SpaceX's Colossus clusters. Claude is now available on all three major cloud platforms (AWS, GCP, Azure), with AWS remaining the primary training partner.
Valuation context: $965 billion for a private company on $47 billion ARR implies a 20.5x revenue multiple—higher than typical SaaS multiples but aligned with how capital markets are treating frontier AI as cloud infrastructure rather than software. Anthropic approaches the $1 trillion threshold no private company has ever reached. An IPO window is targeted for October 2026, likely the company's final private raise.
For architects: Anthropic's trajectory signals three structural shifts. (1) Enterprise AI is now an infrastructure category, priced and governed like cloud capacity, not a software feature. (2) Compute scarcity drives pricing power; businesses with locked-in multi-year AWS Claude contracts have pricing protection unavailable to new or spot-market buyers. (3) Single-vendor dependency is real—enterprises heavily integrated on Claude face material switching costs. Multi-vendor hedging (Claude + OpenAI GPT) is now prudent for production workloads.
Sources
- Primary source
- anthropic.com
“Anthropic has raised $65 billion in Series H funding led by Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital, valuing the company at $965 billion post-money. Since our Series G in February, adoption has continued to grow across global enterprise customers, and our run-rate revenue crossed $47 billion earlier this month.”
- techcrunch.com
“The company said its run rate revenue crossed $47 billion earlier this month, and The Wall Street Journal recently reported that the startup expects a 130% revenue surge to bring it to its first operating profit.”
- digitalapplied.com
“Anthropic went from a $380B Series G valuation in February 2026 to $965B in May 2026 — one of the steepest private re-ratings on record, driven by run-rate revenue. The valuation roughly 2.5×'d in three months.”
- technology.org
“Fresh compute deals with Amazon, Google, Broadcom, and SpaceX aim to fix the capacity shortage behind Claude's usage limits. Anthropic has already disclosed that demand is running 80x ahead of what they planned for in early 2026.”