AI Startups Now Claim Half of All U.S. Pre-Seed Funding, Carta Q1 2026 Report Finds

AI startups now absorb an estimated 50% of all U.S. pre-seed funding, up from approximately 30% just a few years ago, according to Carta’s Q1 2026 State of Pre-Seed report. The report, based on activity from roughly 3,000 U.S. startups, projects total pre-seed capital raised in Q1 at $2.9 billion, DailyCoin reported.

The shift is structural, not cyclical. Pre-seed investors are explicitly sorting for AI expertise and AI market opportunity at the earliest stage of company formation.

The Disappearing Middle

Carta’s data reveals a polarization inside the pre-seed market itself. Rounds between $1 million and $2.5 million accounted for 24% of all pre-seed rounds in Q1 2023 but just 18% in Q1 2026, according to Carta. The frequency of rounds larger than $2.5 million has remained stable, while smaller rounds below $1 million have grown more common.

The mid-sized pre-seed is compressing from both ends. Founders who can demonstrate AI differentiation are commanding larger checks. Everyone else is getting smaller ones, or none at all.

Pre-Seed in the Context of a $300 Billion Quarter

The pre-seed numbers sit inside a broader AI funding environment that has moved into unprecedented territory. In Q1 2026, investors deployed $300 billion into roughly 6,000 startups globally, with AI accounting for approximately 80% of the total, according to Crunchbase data cited by The AI Insider.

But concentration at the top distorts the picture. Three companies (OpenAI, Anthropic, and xAI) accounted for 67% of all AI funding in Q1, per PitchBook data cited by The AI Insider. The remaining $83.5 billion was split across 1,543 deals. Median pre-money valuations nearly doubled in a single quarter, jumping from $30 million in Q4 2025 to $69.9 million.

The pre-seed market tells a different story than the mega-round market. At the earliest stage, the capital is not concentrated in a handful of frontier labs. It’s spread across thousands of founders, and AI founders are winning the allocation fight decisively.

Geographic Shift

Carta’s report also flagged a geographic disruption: Miami has broken into the top three cities for early-stage AI funding, according to DailyCoin, displacing established hubs. The shift tracks with broader talent migration patterns as AI founders cluster in cities with lower costs, favorable tax structures, and growing investor networks.

Capital Abundance, Competitive Saturation

If half of all new pre-seed capital flows to AI founders, the winner’s curve favors AI-native teams at formation. That attracts more AI talent, which increases competitive pressure on non-AI businesses seeking the same pool of early capital.

For founders building in the agent infrastructure space specifically, the signal is clear: capital is available. The harder question is defensibility. With 50% of pre-seed dollars chasing AI, the number of competing products at every layer of the stack is growing faster than the market they serve. Pre-seed abundance masks competitive saturation at the application layer, and only founders with defensible infrastructure or deep vertical focus will convert early capital into durable businesses.