European AI Startup Funding: Mega-Rounds Drive Record Share

A record share, held by a small group

Artificial intelligence now dominates European venture capital to a degree the region has never seen. Behind that headline, though, most of the money is landing with a small group of companies.

One report covering the first half of the year puts European AI funding at roughly $23 billion, or 55% of all venture capital raised in the region, a record share 1. The concentration stands out more than the total. About 73% of that AI money went to just 38 companies that each raised $100 million or more 1. In recent years, the comparable figure was under half 1.

PitchBook describes the same pattern. AI's share of European deal value has risen to 60.3%, up from 37.9% in 2025 2. Funding is running ahead of last year's pace even as the number of rounds falls 2. Mega-rounds above €100 million made up more than half of deal value in Q2, compared with about 37% in 2025 2. Seven of the largest European VC deals on record have closed this year 2.

The names at the top

The same few companies come up repeatedly. London-based AI infrastructure firm Nscale has raised €2.9 billion this year, the region's largest deal 2. Isomorphic Labs, which designs drugs using AI, closed a $2.1 billion Series B 2. German robotics developer Neura Robotics raised a $1.4 billion Series C 2.

Earlier coverage of Q3 2025 named the same leaders. Vestbee, citing PitchBook, lists Mistral AI (€1.3 billion) and Nscale (€1.27 billion) as the continent's biggest rounds that quarter 3. It notes both were backed by major corporations including ASML, NVIDIA and Dell 3. Another account gives larger figures for the same period: a $3.5 billion round for Mistral, a $3.36 billion note for Nscale and a $1.8 billion raise for defense-AI company Helsing 4. It also says Germany and France had their strongest quarters since 2021 4.

Why the numbers disagree

The figures for AI's share of European funding vary widely:

• 39% of venture value in Q3 2025, up from 34.5% at mid-year 3
• 55% in the first half of the year 1
• 60.3% year to date 2
• 75%, about $18.8 billion, in Q3 4

These differences most likely come from different time windows and methods. Some count announced deal values and others count closed capital. Some record a round's full headline size, while others record only the cash tranches. Definitions of what counts as an "AI company" also differ, especially for infrastructure and robotics firms. The deal-size gaps for Mistral and Nscale between 3 and 4 probably have similar causes: currency conversion, whether convertible notes are included, and whether multiple tranches are added together.

Every source agrees on the direction, even where the exact numbers differ. AI's share is rising steeply, and mega-rounds are driving it.

Who gets left out

When a few companies absorb most of the capital, others get less. Vestbee notes that a handful of European model developers now take the majority of funding, while smaller applied-AI startups compete for smaller rounds 3. The falling total deal count reported by PitchBook fits that picture 2.

The pattern also affects who leads these companies. Since 2023, European AI startups with at least one female founder have accounted for 18% of completed deals but only 10% of capital 1. That gap is tied to mega-rounds going mostly to male-led teams 1. The likely explanation is that women-led startups are not doing worse at the early stages. They are mostly missing from the very largest rounds, which now decide the totals.

Unicorns are spreading beyond the UK

Some data points the other way. In Q3, 42 new AI unicorns were created worldwide. The US produced 24, Asia 11 and Europe 7 4. That brought Europe's unicorn total to 105 4. The same account argues that new AI hubs beyond the UK, particularly in Germany and France, are now part of the frontier-lab-adjacent tier 4.

What it adds up to

The most reasonable reading is that Europe's AI boom is real, but it rests on a narrow base. A handful of capital-heavy bets on models, compute infrastructure, robotics and AI-driven science are carrying the totals. These bets are increasingly backed by strategic corporate investors rather than only traditional VCs 3. That brings large sums and industrial partners. It also makes the region's AI statistics fragile. One delayed or down-sized round from a company like Nscale or Mistral could noticeably shift a quarter's figures.

Record share and record concentration are happening together. Europe has built a few heavyweight AI companies. The open question is whether the many smaller applied-AI startups behind them can get the capital they need to grow.