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We just made it to Andreessen Horowitz’s Top AI Apps 50. I am grateful, mostly for a decision we made early that felt unpopular at the time. We didn’t raise a giant round, hire an army, or sprint into land-grab mode. We built a deep product and an unglamorous deployment muscle. That is how a lean and strong team now powers 30 million calls a month. From the outside it looked slow. It wasn’t. I think the whole "raise a ton of money, hire a ton of people and land-grab" narrative is so ingrained in the startup world that it can feel like the only way forward. It can give an illusion of progress, but once you dig a little deeper, it becomes clear that customers don't sign up or renew because you raised a large round or because you have a large team. They work with you because the software works, the rollout is predictable, and you show up when it breaks. In voice AI, some competitors raised big and were crowned “inevitable.” Everyone assumed capital would decide the category. Today, many of the logos we’re winning are migrations from that narrative. Why? Because you cannot buy your way into PMF or retention. Hype is a sugar high. Operations are compounding interest. We focused on very high talent density instead of hiring an army. Enterprises do not care about your cap table. They care about outcomes and the certainty of those outcomes. At the end of the day, like Tao, everything always returns to the fundamentals. And those fundamentals haven't changed - they've been the same - product, customers, iteration, talent. Everything else is optics. Michael Seibel, Jack Altman, Y Combinator

I’m excited to share our latest collaboration with OpenAI, highlighting how Retell AI is transforming phone calls into programmable, intelligent conversations—powered by GPT-4o. At Retell, we’ve taken a simple but powerful approach: rebuild the call center from first principles. No scripts. No manual routing. Just real-time conversations handled by AI agents that understand, reason, and act. With OpenAI’s models, our users have seen: 📉 Up to 80% reduction in call-handling costs 🌟 90+ NPS across deployments 🚀 Production-ready voice agents launched in days, not weeks Also our hyper growth! 🔥 $14M ARR in 16 months with just 11 employees Big thanks to the OpenAI team for the deep collaboration. 😇 OpenAI for Business Nick Pyne Théophile Sautory Katie (Lynch) Grodziak 👇 Full story in the comments below 👇

Sharing our collab video with SWTCH ⚡️ Swtch operates 20,000 EV charging ports across North America. When drivers call for support, they’re usually standing in front of a charger that needs to work immediately. So Swtch built a voice agent with Retell to handle those moments at scale. When drivers call in, they’re answered by Lucas, Switch’s AI voice agent. Lucas helps troubleshoot issues, provides clear guidance, and keeps drivers moving without long hold times or queues. The results: → 50%+ reduction in customer support costs → ~5 seconds to pick up, replacing multi-minute hold times → 5,000–8,000 calls per month handled by Lucas See customer story in comments ⚡️

Pine Park Health automated appointment reminders and patient follow-ups with Retell AI voice agents. The results: 2.1 FTEs back to patient care, +38% scheduling NPS, 55.7% booking success. If AI voice agents are on your 2026 roadmap - see exactly how they rolled it out. → Read the case study here: https://lnkd.in/gRTJF-_N

"What will be the reaction of my users to a voice AI agent?" That’s the question almost every business owner asks before trying voice automation. It’s not about the tech. It’s not about the cost. It’s about how real users will feel. Will they get frustrated? Hang up immediately? Leave a bad review? That fear stops a lot of teams from ever testing voice AI — even when they know their team is stretched thin and every missed call is a missed opportunity. But here’s what we’ve seen again and again from Retell customers: “Our SCAT scores stayed at 90, just as high as with our best human reps.” “Most people had no idea it was AI. And the ones who figured it out were impressed.” “The AI actually handled hot leads better than humans. It’s instant. No wait time. No missed window.” So… what will be the reaction of your users? Try it. You might be surprised. Follow Retell AI to see how businesses are transforming voice support with AI.

How do customers actually react to AI phone support? Every month, over 60 million customer calls are handled by Retell's AI phone agents. The 2025 Industry Report presents the latest trends in customer behavior related to AI-powered phone support.