1h ago

Anthropic raises $65 billion at a $965 billion valuation, surpassing OpenAI as the most valuable AI startup

The round comes as Anthropic's ARR hits $47 billion

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We've raised $65 billion in Series H funding at a $965 billion post-money valuation, led by @AltimeterCap, Dragoneer, @Greenoaks, and @sequoia. This investment will help us advance our research and expand our capacity to meet growing demand for Claude.

11:11 AM · May 28, 2026 View on X

Anthropic has raised $65 billion in Series H funding at a valuation of $965 billion, and has now passed OpenAI.

AnthropicAnthropic@AnthropicAI

We've raised $65 billion in Series H funding at a $965 billion post-money valuation, led by @AltimeterCap, Dragoneer, @Greenoaks, and @sequoia. This investment will help us advance our research and expand our capacity to meet growing demand for Claude.

6:11 PM · May 28, 2026 · 522.5K Views
6:24 PM · May 28, 2026 · 7.8K Views

@xeophon Haha good eye.

Florian BrandFlorian Brand@xeophon

@AndrewCurran_ situational awareness lp as investor 👀

6:30 PM · May 28, 2026 · 247 Views
6:30 PM · May 28, 2026 · 164 Views
Andrew CurranAndrew Curran@AndrewCurran_

Anthropic has raised $65 billion in Series H funding at a valuation of $965 billion, and has now passed OpenAI.

6:24 PM · May 28, 2026 · 7.8K Views
6:32 PM · May 28, 2026 · 1.7K Views

if you replace billions with millions, this sounds like any other high-growth startup fundraise announcement 😉

AnthropicAnthropic@AnthropicAI

We've raised $65 billion in Series H funding at a $965 billion post-money valuation, led by @AltimeterCap, Dragoneer, @Greenoaks, and @sequoia. This investment will help us advance our research and expand our capacity to meet growing demand for Claude.

6:11 PM · May 28, 2026 · 522.5K Views
6:38 PM · May 28, 2026 · 1.5K Views

Valuation reaching the Heavens for series H

AnthropicAnthropic@AnthropicAI

We've raised $65 billion in Series H funding at a $965 billion post-money valuation, led by @AltimeterCap, Dragoneer, @Greenoaks, and @sequoia. This investment will help us advance our research and expand our capacity to meet growing demand for Claude.

6:11 PM · May 28, 2026 · 522.5K Views
6:50 PM · May 28, 2026 · 4.7K Views

After today's raise of $65 B, Anthropic is currently is more valuable than OpenAI.

Anthropic: $965B (post-money, May-28-2026)

OpenAI: $852B (post-money, Mar-31-2026)

Rohan PaulRohan Paul@rohanpaul_ai

Wow. Anthropic secures a massive post-money valuation of $965B after raising $65 B. Just three months earlier, in February, Anthropic had raised $30B at a $380B post-money valuation. Claude’s run-rate revenue crossed $47B . Altimeter Capital, Dragoneer, Greenoaks, Sequoia Capital, Capital Group, Coatue, D1 Capital Partners, and others jointly led the Series H raise. Institutional investors including Baillie Gifford, Blackstone, Brookfield, D.E. Shaw Ventures, DST Global, and Fidelity Management & Research also joined in. Samsung, SK Hynix, and Micron came in as strategic infrastructure partners. A $15 billion portion of the round comes from prior hyperscaler commitments, including Amazon’s $5 billion investment announced in April. To note, OpenAI last raised a whopping $122 billion round in March at an $852 billion post-money valuation.

7:05 PM · May 28, 2026 · 1.2K Views
7:13 PM · May 28, 2026 · 583 Views

Wow. Anthropic secures a massive post-money valuation of $965B after raising $65 B.

Just three months earlier, in February, Anthropic had raised $30B at a $380B post-money valuation.

Claude’s run-rate revenue crossed $47B .

Altimeter Capital, Dragoneer, Greenoaks, Sequoia Capital, Capital Group, Coatue, D1 Capital Partners, and others jointly led the Series H raise. Institutional investors including Baillie Gifford, Blackstone, Brookfield, D.E. Shaw Ventures, DST Global, and Fidelity Management & Research also joined in.

Samsung, SK Hynix, and Micron came in as strategic infrastructure partners. A $15 billion portion of the round comes from prior hyperscaler commitments, including Amazon’s $5 billion investment announced in April.

To note, OpenAI last raised a whopping $122 billion round in March at an $852 billion post-money valuation.

AnthropicAnthropic@AnthropicAI

We've raised $65 billion in Series H funding at a $965 billion post-money valuation, led by @AltimeterCap, Dragoneer, @Greenoaks, and @sequoia. This investment will help us advance our research and expand our capacity to meet growing demand for Claude.

6:11 PM · May 28, 2026 · 522.5K Views
7:05 PM · May 28, 2026 · 1.2K Views

@AndrewCurran_ situational awareness lp as investor 👀

Andrew CurranAndrew Curran@AndrewCurran_

Anthropic has raised $65 billion in Series H funding at a valuation of $965 billion, and has now passed OpenAI.

6:24 PM · May 28, 2026 · 7.8K Views
6:30 PM · May 28, 2026 · 247 Views

Anthropic drops Opus 4.8, Claude Code dynamic workflows and announcing a cool $65 Billion series H in one day, valuating the company just shy of 1T just before IPO.

🔥

AnthropicAnthropic@AnthropicAI

We've raised $65 billion in Series H funding at a $965 billion post-money valuation, led by @AltimeterCap, Dragoneer, @Greenoaks, and @sequoia. This investment will help us advance our research and expand our capacity to meet growing demand for Claude.

6:11 PM · May 28, 2026 · 522.5K Views
6:30 PM · May 28, 2026 · 484 Views

New Anthropic valuation: $965b

New ARR: $47b ($9b end of 2025)

So close to $1t

AnthropicAnthropic@AnthropicAI

We've raised $65 billion in Series H funding at a $965 billion post-money valuation, led by @AltimeterCap, Dragoneer, @Greenoaks, and @sequoia. This investment will help us advance our research and expand our capacity to meet growing demand for Claude.

6:11 PM · May 28, 2026 · 522.5K Views
6:12 PM · May 28, 2026 · 10.8K Views

@MikeIsaac Insane

rat king 🐀rat king 🐀@MikeIsaac

NEWS: Anthropic raises $65 billion in venture capital, surpassing OpenAI to Become the World’s Most Valuable A.I. Start-Up at $900 billion https://www.nytimes.com/2026/05/28/technology/anthropic-tops-openai-valuation.html

6:06 PM · May 28, 2026 · 53.2K Views
7:15 PM · May 28, 2026 · 207 Views
Anthropic raises $65 billion at a $965 billion valuation, surpassing OpenAI as the most valuable AI startup · Digg