Smallest.ai
Category: AI Agents
A full-stack enterprise Voice AI platform for automating contact centers with real-time AI voice agents Smallest.ai was founded in 2023. The company is led by Sudarshan Kamath. Based in San Francisco, CA, USA. Team size: 101-500. Total funding raised: more than $21 million. Latest round: Series A. Key investors include Seligman Ventures, Sierra Ventures, 3one4 Capital, Better Capital, Upsparks Capital, Schema Ventures, Tiny VC, DeVC, Mission Street Capital.
- Founded
- 2023
- Headquarters
- San Francisco, CA, USA
- Team size
- 101-500
- Total funding
- more than $21 million
Value proposition
Provides a scalable and secure solution for automating customer interactions in contact centers, aiming to reduce latency and operational costs through advanced Voice AI
Products and solutions
AI Voice Agents, Lightning TTS (V3.1), Pulse STT Pro, Hydra Speech-to-Speech, Electron SLMs, Voice 4.0 Platform
Unique value
Focus on creating a full-stack Voice AI platform that is optimized for low latency and real-time interactions, which is critical for natural-sounding voice agents
Target customer
Enterprise Contact Centers
Industries served
Customer Service, Telecommunications, Healthcare, Finance, Debt Collection, Real Estate, Sales
Technology advantage
Vertically integrated Voice 4.0 stack with Hydra asynchronous speech-to-speech, Lightning TTS, and Pulse STT—real-time parallel listen/reason/respond architecture plus Tenstorrent co-optimized low-cost on-prem inference
How they differentiate
Smallest.ai differentiates itself by offering a full-stack enterprise Voice AI platform focused on scalability, low latency, and real-time call automation with proprietary models
Main competitors
Retell AI, Bland AI, Observe.AI, ElevenLabs
Key partnerships
Tenstorrent, Plivo
Notable customers
RingCentral, Truecaller, Readymode, Piramal, Kogta, Pocket, Paytm, MakeMyTrip, ServiceNow, Dalmia Cement
Major milestones
Raised $13M Series A led by Seligman Ventures (Jul 2026); total funding >$21M, Launched Voice 4.0 architecture and Hydra speech-to-speech model, Raised $8M seed led by Sierra Ventures (Oct 2025), Lightning TTS / Pulse STT among top Artificial Analysis voice models, Tenstorrent hardware partnership for ~4x lower on-prem TTS cost, SOC 2 Type II, ISO 27001, GDPR, HIPAA compliance
Growth metrics
300% growth projected in the US and 150% year-on-year growth in India over the next 12 months
Market positioning
Smallest.ai is positioned as a provider of AI voice agents for enterprise contact centers, aiming to automate and improve customer interactions through real-time, human-like conversations
Geographic focus
Primarily focused on the US and Indian markets, with headquarters in San Francisco
Patents and IP
Not publicly available
About Sudarshan Kamath
Founder and CEO of Smallest.ai since November 2023. Previously worked as Lead Data Scientist at Bosch, Lead Product Manager at Vakilsearch, and Associate Product Manager at Toppr. Holds B.Tech in Mechanical Engineering from IIT Guwahati and attended UC San Diego for MS in Data Science.
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Official website: https://smallest.ai
