Anthropic drops new Claude model as OpenAI IPO race heats up

Money usually reveals what people believe about the future long before any product does.

For most of the artificial intelligence (AI) boom, one company sat at the top of every "most valuable startup" list, and almost everyone assumed it would be first to ring the opening bell on Wall Street.

That order felt settled. The logic was simple. First real mover, biggest war chest, the chatbot your relatives actually knew by name. Investors priced the rest of the field as talented runners-up, fast-growing but a step behind, waiting their turn.

The IPO chatter only hardened that ranking. Bankers and reporters spent months treating the company at the top as the obvious first to file. When you assume you already know the leader, you stop checking the scoreboard.

The assumption held, right up until it didn't.

On May 28, the lab that spent years cast as the polite second-place finisher rewrote the standings.

Anthropic, the maker of the Claude chatbot, said it raised $65 billion in fresh funding at a $965 billion valuation, vaulting past OpenAI to become the most valuable AI startup in the world, according to CNBC.

Anthropic passes OpenAI and ships a new Claude model

The Series H round was led by Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital, CNBC reported. It lifts Anthropic (ANTH.PVT) to a $965 billion post-money valuation, ahead of OpenAI's (OPAI.PVT) $852 billion mark from late March.

That is roughly two and a half times the $380 billion Anthropic was worth in February, CNBC confirmed.

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When I lined that $965 billion price tag up against the latest International Monetary FundGDP tables, the number stopped feeling abstract.

Only 21 national economies produce more than $1 trillion a year. A $965 billion valuation would rank Anthropic just outside that club, bigger than the entire annual output of Belgium, Argentina, or Norway, according to StatisticsTimes.

A single AI lab, less than five years old, is now priced like one of the largest economies on the planet.

The model news landed the same day. Anthropic shipped Claude Opus 4.8, an upgrade to its flagship system, and said it tops OpenAI's GPT-5.5 and Google's (GOOGL) Gemini 3.1 Pro on benchmarks for agentic coding, financial analysis, and computer use, according to Yahoo Finance.

The company also says the new model is more "honest," flagging uncertainty and making fewer unsupported claims, Yahoo Finance reported.

Photo by IMEN BEN YOUSSEF on Getty Images

How second-place lab Anthropic built a $965 billion business

Anthropic's rise runs through code, not chat. Its revenue exploded on the back of Claude Code, the company's AI coding assistant, and its annualized revenue run rate hit $47 billion this month, up from about $10 billion a year earlier, according to CNBC.

That revenue line is the part that flipped Wall Street.

Investors had questioned whether any of these labs could turn frontier models into a real business instead of a cash furnace. Anthropic's answer was to sell software that companies pay for every day, and the run rate is now about five times what it was a year ago, CNBC reported.

Related: Pope Leo XIV teams with Anthropic founder on bold AI warning

The round also pulled in deep-pocketed backers. It included $15 billion in previously committed money from cloud partners, among them $5 billion from Amazon (AMZN).

Anthropic now says Claude is the first frontier model available on all three major cloud platforms (Amazon Web Services, Microsoft Azure, and Google Cloud), according to Sherwood News. That reach is what a near-trillion-dollar price tag is supposed to buy.

Anthropic's valuation, revenue numbers at a glance

• $965 billion: Anthropic's post-money valuation after May 28's raise
• $852 billion: OpenAI's valuation as of late March
• $380 billion: Anthropic's valuation in February, about two-and-a-half times lower
• $47 billion: Anthropic's annualized revenue run rate this month, up from roughly $10 billion a year earlier
• 21: The number of countries whose economies top $1 trillion a year, just ahead of Anthropic's valuation

What the AI valuation upset means for your money

My read, after watching this rivalry since the first Claude shipped, is that the scoreboard now matters because the IPOs are real and close.

Both companies are sprinting to go public this year. OpenAI is preparing to file a confidential IPO prospectus and is looking to list as soon as September. Anthropic is racing to beat its rival to the market, according to Yahoo Finance.

Here is why that touches your account, even if you never buy a single AI share directly.

If you own an S&P 500index fund or a target-date fund in your 401(k), you already hold a stake in this race. Amazon backed Anthropic with billions, and Amazon, Google, Microsoft, and Nvidia have tied large slices of their own valuations to AI demand.

When one private lab gets repriced from $380 billion to $965 billion in a few months, it resets how the market values every public company feeding the same boom.

That cuts both ways. A successful IPO at or above these levels would hand the AI trade a fresh anchor and likely lift the chip and cloud names you probably already own. A weak debut, or a stumble in that $47 billion run rate, would give the bubble crowd exactly the proof they have been waiting for.

For now, the practical move is to know what you own. Check how much of your portfolio rides on a handful of AI-exposed megacaps, and decide whether you are comfortable with that concentration before the IPO headlines start.

Watch who files first. The lab that prints its prospectus ahead of the other sets the price the whole sector gets measured against.

And valuations like these can invert as fast as they climbed, so the number that matters next is not the $965 billion headline. It is whether the revenue behind it keeps showing up.

Related: Anthropic just landed one of the biggest deals in AI

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This story was originally published May 29, 2026 at 12:37 PM.