Full-stack enterprise Voice AI platform Smallest.ai has announced the closure of an $8 million seed funding round led by Sierra Ventures, with participation from 3one4 Capital and Better Capital.
The fresh capital will fuel global expansion across North America and India, accelerate product innovation, and strengthen enterprise adoption in regulated sectors including banking, financial services, retail, healthcare, and IT. The company also announced the appointment of Apoorv Sood as Global Head of Go-To-Market (GTM) to spearhead enterprise growth and partnerships worldwide.
Founded by Sudarshan Kamath and Akshat Aandloi, Smallest.ai enables both on-premise and hybrid deployments, ensuring data privacy, compliance, and reliability, vital for industries such as BFSI. Its enterprise-grade architecture is built for massive scalability, observability, and failover reliability, ensuring consistent uptime and performance across millions of customer interactions.
At the heart of Smallest.ai lies its proprietary full-stack Voice AI, combining speech recognition, natural language understanding, and speech synthesis to power real-time, human-grade conversations. Its Lightning engine achieves 100 ms latency, while the Electron model delivers 10x faster responses than global benchmarks, maintaining enterprise-grade accuracy and security.
The platform currently powers thousands of monthly call minutes for leading enterprises such as Paytm, MakeMyTrip, ServiceNow, and Dalmia Cement, with multilingual support expanding soon to include Hindi, Spanish, and additional Indian languages.
“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, 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 is projecting 300% growth in the US and 150% year-on-year growth in India over the next year, fuelled by rising enterprise demand for scalable, natural Voice AI solutions.
According to market projections, the global Voice AI Agents market is expected to grow from $2.4 billion in 2024 to $47.5 billion by 2034 (≈35% CAGR), reflecting the rapid adoption of AI-powered voice automation across industries.
Enterprises worldwide spend hundreds of billions annually on human-led customer engagement. Smallest.ai’s platform delivers up to 80% cost reduction, 10x improvement in agent productivity, 24×7 availability, and over $10 million in annual savings for large organisations.
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