Full-stack enterprise Voice AI platform Smallest.ai today announced an $8 million seed funding round led by Sierra Ventures, with participation from 3one4 Capital and Better Capital. The investment will fuel the company’s global expansion across North America and India, accelerate product innovation, and deepen enterprise penetration in regulated sectors such as banking, financial services, retail, healthcare, and IT. Strengthening its leadership, Apoorv Sood has also joined as Global Head of Go-To-Market (GTM) to lead enterprise growth and partnerships worldwide.
Founded by Sudarshan Kamath and Akshat Mandloi, Smallest.ai supports on-premise and hybrid deployments, ensuring data privacy, compliance, and reliability critical for BFSI and other regulated industries. The company’s architecture is designed for massive scalability, observability, and failover reliability, delivering consistent uptime and performance across millions of customer interactions. Its enterprise-grade infrastructure provides robust monitoring, redundancy, and security to support large-scale voice deployments.
At its core, Smallest.ai’s proprietary full-stack Voice AI combines speech recognition, natural language understanding, and speech synthesis to enable real-time, human-grade conversations. Its Lightning engine achieves 100 ms latency, and the Electron model delivers 10x faster responses than leading global benchmarks, while maintaining enterprise-grade accuracy and security. The platform already powers thousands of monthly call minutes for leading enterprises including Paytm, MakeMyTrip, ServiceNow, and Dalmia Cement, with support for English, Hindi, Spanish, and more Indian languages coming soon.
“We’ve built Smallest.ai for scale, reliability, and trust—especially for regulated industries,” said Sudarshan Kamath, Founder and CEO, Smallest.ai. “This capital gives us the push to take that vision global with the same enterprise discipline we started with.”
“We invested in Smallest.ai because we believe they’re solving one of enterprise AI’s toughest problems: real-time, human-grade voice interactions at scale,” said Ashish Kakran, Partner at Sierra Ventures. “Built with roots in India and a clear focus on both the US and Indian markets, the team is demonstrating how world-class innovation can come out of India and serve global customers. We’re excited to support this next chapter — enabling voice to become a first-class interface in enterprise engagement across continents.”
“Voice is becoming the new interface for enterprise engagement. Our focus is on scaling this globally while building meaningful impact for teams, customers, and partners. It’s about using AI to make communication faster, smarter, and more human,” said Apoorv Sood, Global Head of Go-To-Market, Smallest.ai.
The company projects 300% growth in the US and 150% year-on-year growth in India over the next year, driven by growing enterprise demand for scalable and natural Voice AI. The global Voice AI Agents market is projected to grow from $2.4 billion in 2024 to $47.5 billion by 2034 (≈35% CAGR), underscoring the accelerating adoption of AI-powered voice automation.
Enterprises globally spend hundreds of billions annually on human-led customer engagement. Smallest.ai’s platform delivers up to 80% reduction in support costs, 10x improvement in agent productivity, 24×7 availability, and savings of over $10 million annually for large organizations.
