May 31, 2026 – The five-year-old firm surpasses OpenAI in valuation, closing a record $965B post-money round that eclipses every other deal this week.
In Summary
Anthropic closed a $65B Series H round, the largest single deal this week.
Its post-money valuation reached $965B, surpassing OpenAI’s $ 840 B.
Total funding since the 2021 founding now approaches $144 billion.
Annualized run-rate revenue crossed $47B, signaling strong enterprise demand.
Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital led the round.
One company rewrote the record books this week. Anthropic has raised $65 billion in a Series H funding round. The San Francisco-based AI firm now carries a $965 billion post-money valuation. This single deal dominated an otherwise quiet week for venture mega-rounds. Furthermore, it confirms the accelerating pace of AI capital deployment in 2026. AI investment has reached levels that would have seemed impossible just two years ago.
A Record-Breaking Raise
The round more than doubles Anthropic’s previous $380 billion valuation. Just three months ago, the company closed a $30 billion Series G financing. That deal already ranked among the largest venture raises in history. However, Anthropic quickly moved to eclipse even that milestone. The company has now raised nearly $144 billion in total since its founding in 2021. That cumulative total makes it one of the most heavily funded private startups in history.
Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital led the latest round. Capital Group, Coatue, D1 Capital Partners, GIC, Iconiq Capital, and XN co-led the deal. Additionally, $15 billion came from committed hyperscaler partnerships. Amazon contributed $5 billion of that amount alone. Notably, Amazon also holds an investment in OpenAI, an Anthropic rival.
Surpassing OpenAI in Valuation
Anthropic now claims the highest private-company valuation in the world. In February 2026, OpenAI closed a $110 billion round at an $840 billion post-money valuation. That deal had been the largest venture financing ever recorded. However, Anthropic’s Series H valuation now exceeds OpenAI’s by $125 billion. Therefore, the AI safety startup has leapfrogged its rival in under 90 days. This shift meaningfully reshapes the competitive landscape for foundational AI platforms.
Revenue and Business Momentum
Beyond valuation, Anthropic shows strong underlying business performance. Its annualized run-rate revenue crossed $47 billion earlier this month. At this trajectory, Anthropic’s revenue growth outpaces most mature technology companies. Moreover, the company’s enterprise customer base has grown substantially since its last raise. According to Anthropic’s official Series H announcement, the funding will help serve historic demand for its products. The capital will also support continued research at the AI frontier. Claude Code and Cowork are among the company’s fastest-growing enterprise products. The company also plans to expand Claude’s availability across more enterprise platforms. This expansion strategy positions Anthropic to capture a larger share of the enterprise AI market.
“This funding will help us serve the historic demand we are experiencing, stay at the research frontier, and bring Claude to more of the places where work happens.”
-Krishna Rao, Chief Financial Officer, Anthropic
The Road to $1 Trillion
Anthropic’s $965 billion valuation places it close to a $1 trillion milestone. Very few private companies in history have reached that threshold. However, Anthropic’s revenue growth and investor confidence make the milestone look achievable. Lead investors like Sequoia and Altimeter are betting on continued AI adoption. Furthermore, Anthropic’s safety-first philosophy resonates with risk-conscious enterprise buyers. The company was co-founded by former OpenAI researchers Dario and Daniela Amodei in 2021. Its Constitutional AI methodology has consistently differentiated it from competitors. The $15 billion in hyperscaler commitments also underscores Anthropic’s strategic importance in the cloud. Amazon and other cloud providers view Claude as critical enterprise AI infrastructure. Competitors like Google DeepMind and Meta AI are also scaling rapidly in foundational AI. Therefore, maintaining a valuation lead requires Anthropic to sustain its pace of innovation.
Other Notable Rounds This Week
Anthropic was not alone in securing capital during the week of May 23-29. Cognition raised $1 billion at a $26 billion valuation. The startup is known for Devin, an autonomous AI coding agent. Lux Capital, General Catalyst, and 8VC led that financing. Similarly, Atlanta-based Stord secured $250 million in a Series F round. The logistics platform now carries a $3 billion valuation after 11 years of operation.
AI model marketplace OpenRouter raised $113 million, led by CapitalG. Additionally, insurtech startup Corgi Insurance raised $106 million at a $2.6 billion valuation. Two companies tied at exactly $100 million: Thea Energy and Garner Health. Space tech firm Observable Space raised $90 million to scale its optical systems. AI video developer Reactor emerged from stealth with $59 million from Lightspeed Venture Partners. ClearNote Health closed out the top 10 with $52 million for cancer detection research. The breadth of the week’s deals reflects healthy interest across multiple sectors beyond AI.
What This Means for AI Investment
This week’s data reveals a sharp concentration of startup capital. According to Crunchbase’s weekly analysis, Anthropic captured roughly 97% of all top-10 disclosed funding. Furthermore, the AI sector continues to attract rounds that dwarf other industries. Q1 2026 already posted the strongest global venture quarter ever recorded. Global startup investment reached $300 billion during that quarter alone. However, non-AI sectors remain subdued, with few megarounds exceeding $500 million. Therefore, the funding gap between AI companies and the broader startup ecosystem continues to widen. This dynamic creates real challenges for non-AI startups seeking later-stage capital. Venture funding has always been cyclical, but the current AI wave shows little sign of slowing. For investors, this week confirms one clear message: AI dominates the 2026 venture story. Anthropic, with its enterprise focus and safety credentials, sits at the center of this shift. As AI becomes embedded in enterprise workflows, demand for foundational models continues to rise.
