fundraise receipt · ai
frontrun flagged River AI 62 days before its $1.1B seed round
tl;dr: River AI announced $1.1B seed on Aug 11, 2026, led by General Catalyst and AMP PBC. frontrun flagged the company on Jun 10, 2026, when it had 412 followers, 62 days before the announcement.
what River AI raised
River AI (@river_ai_inc · river.ai) announced $1.1B seed on Aug 11, 2026, led by General Catalyst and AMP PBC, with participation from NVIDIA, AMD Ventures, Y Combinator, Temasek. verified against river.ai.
Creating personal AI owned and shaped by each individual.
how we knew 62 days early
frontrun watches the follow graphs of 5,000+ tracked accounts on X. on Jun 10, 2026, tracked investors began following River AI, which had 412 followers at the time. that convergence was logged that day. the round landed 62 days later.
75 tracked investors follow River AI today, and the account has grown to 9,390 followers. that count is public. which investors they are, and the day each one followed, is what the product shows.
River AI already raised. see the companies getting the same investor convergence right now, before their round. start a 7-day free trial →
other rounds we called early
Sail Research $80M (62d early) · Generalist $400M (62d early) · Synthefy $6.5M (63d early) · Swarm Aero $10M (61d early) · Atlas $11.5M (63d early)
data updated Nov 2, 2026 · River AI signal page · every round we called early · trending this week