Global venture funding rebounded to roughly $425 billion in 2025, according to the research audit underpinning this report, as the generative-AI super-cycle moved into full force. The headline recovery, however, masked an unprecedented concentration: a small number of foundation-model and AI-infrastructure rounds absorbed the majority of new capital.

The shape of the market had inverted from 2021. Where the ZIRP peak spread capital thinly across hundreds of unicorns, the 2025 boom funneled it into a handful of labs operating at a scale that blurred the line between private startup and sovereign entity.

That concentration reshaped fund strategy across the industry. Traditional early-stage firms increasingly found themselves priced out of the largest rounds, which were led instead by hyperscalers, sovereign wealth vehicles, and crossover megafunds writing checks measured in the tens of billions.

The year set the stage for the record-shattering quarter that would open 2026 — and for growing debate about whether a market this concentrated was a sign of strength or of fragility.