Anthropic Raises $65B, Hits $965B Valuation Ahead of IPO

A Historic Haul for AI

Anthropic, the AI startup behind the Claude family of models, has secured a staggering $65 billion in a Series H funding round, the company announced on May 28, 2026. The investment values the company at $965 billion post-money, catapulting its worth past that of its chief rival, OpenAI, which was valued at $852 billion in its last round in March. This colossal raise marks what is widely seen as Anthropic's final major private financing before an expected initial public offering.

The Staggering Numbers

The round was led by a who's-who of heavyweight investors, including Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital. It was co-led by Capital Group, Coatue, D1 Capital Partners, GIC, ICONIQ, and XN. A vast array of institutional investors like Baillie Gifford, Blackstone, Brookfield, D.E. Shaw Ventures, DST Global, and Fidelity Management & Research Company also participated. The round includes $15 billion in previously committed investments from hyperscalers, notably a $5 billion tranche from Amazon.

This funding follows a $30 billion Series G round in February 2026 that valued the company at $380 billion, indicating a meteoric rise in perceived value in just a few months. Anthropic's commercial momentum is a key driver. The company disclosed that its annualized run-rate revenue crossed $47 billion earlier in May, a figure that reportedly could top $50 billion by the end of June, with Q2 revenue expected to more than double to $10.9 billion.

Fueling the AI Arms Race

Anthropic stated the new capital will be directed toward three primary objectives: advancing its core safety and interpretability research, expanding compute capacity to meet soaring demand for Claude, and scaling the products and partnerships its enterprise customers rely on. The company has been aggressively securing compute resources, signing landmark agreements for massive new capacity.

• Amazon: A deal for up to five gigawatts of new capacity, adding to Amazon's massive prior commitments.
• Google and Broadcom: An agreement for five gigawatts of next-generation TPU capacity.
• SpaceX: Access to GPU capacity in its Colossus 1 and Colossus 2 infrastructure.

Notably, strategic infrastructure partners Micron, Samsung, and SK hynix also joined the funding round, highlighting the critical intersection of AI software and advanced semiconductor supply. Claude is now the first frontier model available on all three major cloud platforms: AWS (its primary partner), Google Cloud, and Microsoft Azure.

IPO Positioning and Market Dynamics

This round solidifies Anthropic's position at the apex of the private AI market, setting the stage for a blockbuster IPO. The funding environment has been intensely competitive. TechCrunch reported that investors were clamoring to get on the cap table, with one institutional investor pledging $5 billion just to secure a meeting with Anthropic CFO Krishna Rao. Bloomberg and others had previously reported in May that Anthropic was in talks to raise at least $30 billion at a valuation above $900 billion.

The valuation now places Anthropic ahead of OpenAI and in the same stratosphere as other tech titans. For context, Elon Musk's SpaceX—which merged with xAI—is reportedly targeting a $2 trillion valuation in its own pending IPO. The scale of investment underscores the vast capital requirements for training and running state-of-the-art AI models, locking in deep partnerships with cloud and chip providers.

Investor Rationale and Enterprise Adoption

Investors cited Anthropic's unique blend of commercial traction and principled research focus. “Claude’s latest advancements have driven large-scale adoption among the world’s most demanding organizations. This momentum positions Anthropic to lead the next phase of AI innovation,” said Brad Gerstner, Founder and CEO of Altimeter Capital. Neil Mehta of Greenoaks praised Anthropic's culture, stating, “Rarely has a company’s culture, mission, and commercial momentum reinforced each other so completely.”

Alfred Lin of Sequoia Capital highlighted the product's deep integration into business workflows: “Startups and Global 5000 companies alike are deploying Claude to handle complex workflows... Anthropic is building the bridge between where enterprise AI stands today and where it's headed.” This enterprise focus, with products like Claude Code, Claude Cowork, and Claude Security, appears to be a key differentiator driving its revenue growth.

What It Means for the AI Landscape

Anthropic's $65 billion raise is more than a financial milestone; it is a strategic inflection point. The capital secures the compute resources necessary to maintain its competitive edge in the relentless race for larger, more capable models. It also validates the company's "safety-first" approach, demonstrating that rigorous research alignment can coexist with explosive commercial growth.

The funding deepens the moat between the two leading AI startups, Anthropic and OpenAI, and the rest of the field. It signals that the era of billion-dollar AI rounds is giving way to an era of *ten*s of billions, a scale necessary to fund the hardware, energy, and talent required for next-generation systems. As the AI industry barrels toward public markets, Anthropic's unprecedented valuation sets a new benchmark, reshaping expectations for the entire sector.