The trading screens blinked a single number and the room quieted. Investors whispered: $1.2 trillion (€1.1 trillion). For a heartbeat, the contest between OpenAI and Anthropic felt like a new kind of scoreboard.
I’ve tracked these funding skirmishes for years, and you should pay attention because money buys more than servers—it buys influence over how AI behaves in the world.
On a trading desk this week, screens showed last year’s rounds beside fresh rumors.
Insiders told the Financial Times that OpenAI may be lining up a funding round that would peg it at $1.2 trillion (€1.1 trillion). If true, that could push OpenAI past Anthropic—at least briefly.
Here’s the payout chronology that matters to investors and product teams:
- Early last year: OpenAI at $300 billion (€276 billion), Anthropic at $61.5 billion (€57 billion).
- September: Anthropic jumps to $183 billion (€168 billion). October: OpenAI edges up to $500 billion (€460 billion).
- February: Anthropic surges to $380 billion (€350 billion) after agentic platform growth such as OpenClaw. March: OpenAI receives a massive commitment and is valued at $852 billion (€784 billion), including a reported $122 billion (€112 billion) backing.
- May: Anthropic rockets to $965 billion (€888 billion).
The cap table has felt at times like a photo finish at the Kentucky Derby—numbers shifting across the tape as new capital arrives.
In private conversation, Sam Altman told Fortune he won’t take OpenAI public in 2026.
That comment matters because, according to the Financial Times, whether OpenAI accepts fresh capital “will hinge on exactly when OpenAI decides to go public.” If OpenAI stays private longer, investors can pour in cash without the same public scrutiny.
Sam Altman frames the delay around safety and alignment work—arguing some fixes are easier off the public stage. You should read that as both governance posture and strategic timing: private money can be faster, public markets offer different pressure and disclosure.
Will OpenAI’s rumored $1.2 trillion funding round close?
Short answer: it’s possible but not certain. OpenAI declined to comment to the Financial Times. The move depends on investor appetite, the company’s runway needs, and whether Altman wants to set a public-floor ahead of an IPO. If a round lands, it would likely include strategic partners—think big cloud providers, sovereign wealth funds and major tech backers such as Microsoft.
On trading floors and in boardrooms, Anthropic’s IPO chatter has already altered expectations.
People close to the deal tell Reuters that Anthropic is targeting a roughly $2 billion (€2 billion) market valuation when it goes public—though that figure reads oddly small compared with private rounds and likely reflects initial float size or reporting nuance. Reports expect an IPO in mid-October, which would immediately rebench public comparables.
The two companies feel like planets jockeying for orbit: private commitments bend gravity, public listings redraw trajectories.
How does additional capital change the OpenAI–Anthropic contest?
More capital buys more compute, more engineers, and more go-to-market muscle—especially for enterprise plays and product integrations. Anthropic’s gains were accelerated by business-focused traction, while OpenAI’s early lead came from consumer momentum with products such as ChatGPT and experiments like Sora. Expect fresh funding to influence hiring, partnerships, and where each firm places its bet between general-purpose models and verticalized assistants.
When might Anthropic go public?
Insiders speaking to Reuters peg an IPO toward mid-October. Coverage by Bloomberg and CNBC has tracked the shifting timetable. If Anthropic lists, public markets will supply a real-time valuation that could dwarf private round headlines.
For you—whether you run a fund, lead a product team, or follow policy—this is more than numbers. These rounds change who controls model roadmaps, who sets safety limits, and who answers regulator questions with public filings instead of sealed term sheets. Which side do you think will steer the future of frontier AI?