AI Agents Keep Commanding VC Megarounds — May 06, 2026

AI-agent and infrastructure startups are still setting the pace for startup fundraising, with fresh capital flowing into customer-service agents, enterprise coding automation, open-source inference, and e-commerce ad platforms at valuations that assume rapid enterprise adoption. In this episode: Top stories: 1. AI agent startup Sierra valued at $15B in new $950M funding round - SiliconANGLE — SiliconANGLE https://siliconangle.com/2026/05/04/ai-agent-startup-sierra-valued-15b-new-950m-funding-round/ 2. Blitzy raises $200M at $1.4B valuation to deploy thousands of coding agents in parallel - SiliconANGLE — SiliconANGLE https://siliconangle.com/2026/05/05/blitzy-raises-200m-1-4b-valuation-deploy-thousands-coding-agents-parallel/ 3. RadixArk Launches with $100 Million in Seed Funding Led by Accel to Grow SGLang and Democratize Frontier AI Infrastructure — Business Wire https://www.businesswire.com/news/home/20260505077157/en/RadixArk-Launches-with-%24100-Million-in-Seed-Funding-Led-by-Accel-to-Grow-SGLang-and-Democratize-Frontier-AI-Infrastructure 4. IronSource founders raise $60M at $500M valuation for Zyg, an agentic AI platform that automates e-commerce advertising — The Next Web https://thenextweb.com/news/zyg-ironsource-founders-agentic-ecommerce-ai Follow and rate Startup Fundraising on Apple Podcasts or Spotify. Feedback? Email [email protected]