Smallest.ai, a full-stack enterprise voice artificial intelligence (AI) platform on Tuesday announced that it had raised $8 million in a seed funding round led by Sierra Ventures, with participation from 3one4 Capital and Better Capital.
The startup said the funds would support its expansion plans across North America and India, while accelerating product innovation. It plans to deepen its presence in regulated sectors such as banking, financial services, retail, healthcare, and information technology.
Smallest.ai projects 300 per cent growth in the United States and 150 per cent year-on-year (Y-o-Y) growth in India over the next year, driven by demand for scalable and natural voice AI.
The company appointed Apoorv Sood, global head of go-to-market (GTM) to lead enterprise growth, and partnerships.
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. The platform powers leading enterprises such as Paytm, MakeMyTrip, ServiceNow, and Dalmia Cement.
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The platform supports English, Hindi, and Spanish, with plans to launch in more Indian languages soon, the company said in a statement.
"We have built Smallest.ai for scale, reliability, and trust — especially for regulated industries. This capital gives us the push to take that vision global with the same enterprise discipline we started with," said Sudarshan Kamath, founder and chief executive officer, Smallest.ai.
The market for global voice AI agents is projected to increase from $2.4 billion in 2024 to $47.5 billion by 2034, at a 35 per cent compound annual growth rate.

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