AI Application-Layer Startup Radar2026. 05. 18. 01:47:56Vapi at $500M, Martha Stewart in AI, and 9 other app-layer rounds this weekNine confirmed AI app-layer rounds totaling ~$123.5M for May 10–17 2026 — led by Vapi's $50M Series B and Nectar Social's $30M Series A — plus founder backgrounds, capital sources, and emerging patterns for the week.00