The 10 Largest AI Funding Rounds That Defined Q2 2026

Per AI Funding Tracker's Q2 2026 ranking, Anthropic swallowed roughly a third of all global venture capital last quarter with a single $65 billion Series H that closed May 28 at a $965 billion post-money valuation, officially pushing it past OpenAI as the most valuable private company on Earth. Total startup funding worldwide hit about $205 billion — the second-largest quarter on record — and over 70% of it landed in AI, up from under 50% a year earlier. The composition shifted: Q1 was almost entirely frontier-model money; Q2 spread into defense, robotics, drug discovery, data centers, and satellite intelligence.

The Round That Ate the Quarter

Co-leads on the Anthropic round were Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital, each reportedly writing north of $2 billion. Capital Group, Coatue, D1 Capital, GIC, ICONIQ, and XN came in as additional co-leads. Then the tell: Samsung, SK Hynix, and Micron took equity — a supplier chain pre-positioning behind the HBM and memory roadmap Anthropic needs to keep scaling. About $15 billion of previously committed hyperscaler cash was folded in, including Amazon's $5 billion from April. Anthropic's revenue run-rate passed $47 billion by early May, and days after the close the company confidentially filed for an IPO. A Series H is rare in venture history. The prior short list: Facebook, Lyft, Slack. Anthropic is on it now.

Bezos's Industrial Bet

Number two on the leaderboard is Prometheus, Jeff Bezos's industrial AI startup, with a $12 billion Series B on June 11 at a $41 billion valuation — over $18 billion raised in under a year. JPMorgan, Goldman Sachs, BlackRock, DST Global, and Arch Venture Partners co-led alongside Bezos personally. Co-CEO Vik Bajaj, a Verily co-founder, runs the technical side; this is Bezos's first operating role since leaving Amazon in 2021. The pitch is an "artificial general engineer" — taking a physical artifact like a jet engine from design through manufacturing as one AI problem. No disclosed revenue. Blue Origin is the only named customer. About 150 staff across San Francisco, London, and Zurich, hired from OpenAI, Google DeepMind, and Nvidia. Bezos told CNBC the cash is largely for compute.

What the Numbers Don't Tell You

The Anthropic valuation implies investors are underwriting a $47 billion revenue run-rate at roughly 20x — a multiple that requires continued capacity buildout, not present earnings. Part of the round is rebooked hyperscaler exposure, which inflates the headline check size. Prometheus is even more opaque: no revenue, one named customer, and a cap table heavy with strategic and sovereign capital that will eventually demand liquidity. The bottom seven names on the Q2 leaderboard matter less for total dollars and more for what they signal about capital rotating away from pure frontier-model bets. Watch the fall IPO window: if Anthropic lists first, OpenAI's comp set changes overnight, and so does the private valuation framework for every AI name still private.