Anthropic closed a $30 billion round in February. It's closing another one this week. The size is the same. The valuation isn't.

Bloomberg put the May round at above $900 billion pre-money in its May 12 reporting. February closed at $380 billion post-money. The gap between those two numbers is roughly $520 billion. It was three months.

Sequoia Capital, Dragoneer Investment Group, Altimeter Capital, and Greenoaks Capital Partners are co-leading at roughly $2 billion each, per Bloomberg's May 22 update that the round would close as soon as this week. Peter Thiel's Founders Fund and General Catalyst are also in. At the $900 billion mark, Anthropic would pass OpenAI's $852 billion valuation from March and become the most valuable private AI company in the world.

The number sounds like it was generated by a large language model. But before I dismiss it, I looked at the revenue. I think you should too.

CNBC reported on May 20 that Anthropic expects $10.9 billion in Q2 2026 revenue. Q1 was $4.8 billion. That's a 127% sequential increase in one quarter, on a base that was already substantial. The same Q2 outlook includes a projected operating profit of $559 million. Twelve months ago, Anthropic was telling investors it wouldn't be profitable until at least 2028.

The growth driver isn't one thing. It's two. Enterprise coding is the headline — Claude Code crossed $1 billion in annualized revenue within six months of launch, which almost no developer tool has done. Cybersecurity is the second vector. The Project Glasswing work, where Claude Mythos found thousands of zero-day vulnerabilities in weeks, has been converting into real enterprise contracts. Those are not the same market. The growth isn't concentrated in one bet going right.

Source spread

• Bloomberg — In talks to raise $30B at $900B valuation (May 12) — hype. First reporting on the round; frames the milestone as racing past OpenAI on valuation.
• Bloomberg — To close as soon as this week (May 22) — builder. Lead investors named with individual amounts (~$2B each), closure timeline confirmed.
• CNBC — Revenue explosive growth, Q2 $10.9B, profitable quarter (May 20) — builder. Q2 $10.9B projection, Q1 $4.8B comparison, sourced to people familiar with Anthropic's internal projections.
• CryptoBriefing — 130% revenue jump, $559M operating profit — skeptic. Notes WSJ's reporting on compute cost headwinds and the 2028 profitability timeline Anthropic told investors 12 months ago.

Pros & cons

What's real:

• Revenue more than doubled in one quarter. That's customers paying, not a marketing metric.
• Claude Code at $1B annualized in six months is exceptional. Developer tools that reach $1B ARR in a year are rare. Six months is a different category.
• The operating profit projection ($559M) is a first for Anthropic. The shift from "unprofitable through 2028" to "profitable Q2 2026" happened faster than any of their investors predicted.
• At roughly 82x projected quarterly revenue, the $900B valuation is high. But it's not untethered from a company growing 127% sequentially.

What deserves skepticism:

• Both the Q2 revenue and profit figures are forward-looking projections, not audited results. The actual reported numbers could miss.
• WSJ has flagged compute cost headwinds. Anthropic's $45B compute commitment to xAI's Colossus cluster is roughly $1.25 billion per month in fixed costs that don't flex down if revenue slows.
• Two $30B rounds in one calendar year is unusual. The pattern looks more like scale-at-all-costs than a normal funding trajectory.
• The $900B valuation requires sustained growth into Q3 and Q4. Any deceleration resets the math.

What builders need to know

Further reading

• Bloomberg — Anthropic in talks to raise $30B at $900B valuation (May 12)
• Bloomberg — To close as soon as this week (May 22)
• CNBC — Revenue explosive growth, Q2 $10.9B, profitable quarter (May 20)
• CryptoBriefing — 130% revenue jump, $559M operating profit
• AI Weekly — Claude Code $1B annualized
• Anthropic — Series G announcement, $380B valuation (February 2026)
• TechCrunch — Anthropic-xAI Colossus compute deal context