Phone calls may feel outdated, but Simple AI is betting the future of customer interaction is vocal—and smarter than your best human rep.
The startup has developed AI-powered voice agents that automate inbound sales and support calls, using state-of-the-art voice AI technology and real-time customer data. By ingesting full product catalogs—including SKUs, metadata, and pricing—the agents can personalize each interaction, place orders, and even upsell, all while generating transcripts, summaries, and actionable insights.
Fast, Natural Conversations
A standout feature is low latency. Simple AI keeps model response times under 850 milliseconds across the system—covering voice activity detection, end-of-turn model processing, transcription, inference, and text-to-speech. This ensures conversations feel natural, mimicking human interaction without awkward pauses or robotic delays.
“People hate calling businesses today because the experience is terrible,” said CEO Catheryn Li. “When voice agents are so good at their job that it becomes a delightful experience, everyone will prefer calling again.”
The platform is designed to tackle common contact center challenges: seasonal call spikes, inconsistent performance, and underperforming human reps. By scaling dynamically and learning from the business’ top performers, Simple AI’s agents maintain a level of consistency and knowledge no human team can match.
Customizable, Intelligent, and Actionable
Businesses can fine-tune agents by adjusting speed, gender, accent, and even personalizing interactions with the customer’s past orders, preferences, or account history. Zach Kamran, CTO, frames it simply: “Imagine your top performing rep picking up every call. Simple agents know every detail about every product SKU, and all of your customer preferences in an instant.”
Early deployments show strong results. Simple AI’s agents have helped companies across industries—including steak houses, self-storage, and home insurance—achieve up to 30% higher conversion and upsell rates than trained live reps.
Built From the Ground Up
Unlike many AI providers that rely on third-party stacks, Simple AI built its entire voice AI platform in-house, including the models, inference systems, and telephony integrations. “Cat and Zach are among the best we work with,” says First Harmonic Partner JJ Fliegelman. “Without fanfare, they quietly built their own entire voice AI stack from the ground up so that they could have the best product. They’re both great engineers, low on ego, and customer-obsessed—exactly what you look for in great founders.”
Why It Matters
As customer expectations evolve, phone calls remain one of the most natural ways to interact. Simple AI demonstrates that voice doesn’t have to be frustrating—it can be fast, personalized, and profitable. For businesses grappling with contact center costs, scaling challenges, or inconsistent sales performance, automated voice agents may be the next big lever.
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