Anthropic has closed the largest private funding round in artificial intelligence history, raising $65 billion in a Series H financing that pushes the company's post‑money valuation to $965 billion. The round positions the Claude maker within striking distance of the trillion‑dollar mark and what investors and bankers familiar with the matter say could be the company's final private fundraise before a public listing.

The round was co‑led by Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital, with Capital Group, Coatue, D1 Capital Partners, GIC, ICONIQ, and XN also joining as co‑leads. Institutional investors including Baillie Gifford, Blackstone, Brookfield, D.E. Shaw Ventures, DST Global, and Fidelity Management and Research participated as well. Embedded within the round is $15 billion in previously committed capital from hyperscalers, including a $5 billion contribution from Amazon announced in April. Strategic infrastructure partners Micron, Samsung, and SK Hynix also came on board, reflecting the deepening intersection of memory and chip technology with AI model deployment at scale.

The new valuation officially eclipses OpenAI, which raised $122 billion at an $852 billion valuation in March, making Anthropic the highest‑valued private AI company in the world.

From $380 Billion to Nearly $1 Trillion in Three Months

The velocity of Anthropic's valuation growth is difficult to overstate. The company was valued at $380 billion in February after closing its Series G with $30 billion in new capital. In roughly 90 days, that number has more than doubled, driven by what the company describes as sustained enterprise adoption and consumer growth.

According to an announcement on the Anthropic website, the company's run‑rate revenue crossed $47 billion earlier this month, up from $1 billion in annualized revenue at the start of 2025. That trajectory reflects a pace of commercial growth that few technology companies at any stage have achieved.

A notable data point from April underscored this shift. Ramp data showed Anthropic's share of paying U.S. businesses jumping from 24% to 30% in a single month, narrowing the gap with OpenAI to just 4.6 percentage points. Products like Claude Code and Cowork have been key drivers, pulling enterprise customers away from incumbent AI tools and into Anthropic's growing ecosystem.

IPO on the Horizon

Both Anthropic and OpenAI are widely expected to tap the public markets before the end of 2026. The Series H, structured with the participation of major institutional and sovereign wealth funds, reads like a pre‑IPO investor roadshow in many respects. GIC, Singapore's sovereign wealth fund, joining the round adds a layer of cross‑border institutional credibility that typically signals preparation for a public listing.

Anthropic has not officially confirmed an IPO timeline, but the composition and scale of this round makes clear the company is building toward that outcome. Elon Musk's xAI, which merged with SpaceX earlier this year, is meanwhile targeting a $2 trillion valuation in its own pending IPO, keeping the race among AI heavyweights visible and competitive.

Infrastructure Expansion and Chip Partnerships

Beyond capital, this round carries significant strategic weight in the hardware dimension. The company has signed new compute infrastructure agreements with Amazon and is expanding the availability of Claude across all three major cloud hyperscalers: Amazon Web Services, Microsoft Azure, and Google Cloud. Anthropic says Claude is now the first frontier model available natively on all three platforms.

The participation of Micron, Samsung, and SK Hynix as strategic infrastructure partners is particularly notable. As AI inference and training demands grow, power delivery to memory‑intensive processors has become a critical bottleneck. Having semiconductor and memory manufacturers embedded at the investor level gives Anthropic preferential access to next‑generation hardware at scale.

Key numbers from the round at a glance:

• Total raise: $65 billion
• Post‑money valuation: $965 billion
• Previous valuation (February 2026): $380 billion
• Run‑rate revenue: $47 billion (as of mid‑May 2026)
• Amazon's total committed investment: up to $30 billion
• Compute spend commitment: more than $100 billion over the next ten years on AWS

Claude's Commercial Momentum

At the center of this financial story is Claude, the AI assistant that has evolved from a research‑oriented chatbot into a multi‑product enterprise platform. Claude Code, the company's agentic coding product, has seen rapid adoption among software engineering teams. Cowork, a desktop productivity tool aimed at non‑developers, has opened new segments of the enterprise market.

The company also recently launched dynamic workflows, a feature that allows hundreds of AI agents to collaborate on large‑scale tasks such as codebase migrations. This capability is part of Anthropic's broader push into long‑running, complex agentic operations that can meaningfully reduce human workload in enterprise settings.

Anthropic was founded in 2021 by Dario Amodei, Daniela Amodei, and several former OpenAI researchers, with a mission centered on AI safety and responsible development. That origin story has not faded from its public positioning, and the company continues to invest in alignment research alongside its commercial expansion. Whether that combination can sustain momentum at trillion‑dollar scale is the defining question the public markets will eventually answer.

For now, the Series H sends a clear signal: institutional capital believes the answer is yes.