Week's 10 biggest US funding rounds are almost all AI

AI companies dominated this week's ten largest U.S. startup funding rounds, per Crunchbase. Personal AI assistant developer Instinct led with a $1B Series C at a $10B valuation; AI rental platform EliseAI raised $350M at a $4B valuation; AI cybersecurity firm Armadin raised $255.5M in Series B at over $2.5B.

• Viral AI agent Instinct raises $1B Series C at $10B valuation2026-09-28
• Privacy-focused AI assistant Ollie to shut down in a week2026-10-30
• Crunchbase Top 10 Funding Rounds: Re:Build $2.1B, Kalshi $1B2026-10-30
• DoorDash: AI agent orders just "several hundred" vs 3M daily deliveries2026-10-30
• US Series B funding rises but deal count falls2026-10-29