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Smallest.ai raises $8M in seed funding led by Sierra Ventures to enhance Voice AI technology for enterprise applications.

PRIVATEOct 10, 2025

Amount Raised

$8 Million

Round Type

Seed

San FranciscoSoftwareArtificial Intelligence

Investors

3one4 CapitalBetter CapitalSierra Ventures

Description

Smallest.ai, a Bengaluru-based startup, has successfully raised $8 million in seed funding to advance its real-time voice interaction technology. The funding round was led by Sierra Ventures with notable participation from 3one4 Capital and Better Capital. The company specializes in high-speed AI models optimized for voice applications. Its flagship TTS model, 'Lightning,' aims to revolutionize customer service interactions by minimizing latency.

Quick answer

Smallest.ai raised $8 Million in a Seed round, dated October 10, 2025. Investors: 3one4 Capital, Better Capital and Sierra Ventures. Smallest.ai is based in San Francisco, California, United States.

How much did Smallest.ai raise?
Smallest.ai raised $8 Million in a Seed round on October 10, 2025.
Who invested in Smallest.ai?
3one4 Capital, Better Capital and Sierra Ventures are named as investors in this round.
What does Smallest.ai do?
Smallest.ai is an AI startup specializing in voice models, founded by Sudarshan Kamath and Akshat Mandloi in 2023.
Where is Smallest.ai based and how big is it?
Smallest.ai is based in San Francisco, California, United States. Fundz records about 98 employees.
Who are the decision-makers at Smallest.ai?
Fundz holds 1 contact at Smallest.ai, including the Co-Founder. Names and contact details are shown to Fundz members.

Source: Fundz verified event record.

Who else raised in Software and Artificial Intelligence around the same time

Companies in the same sectors as Smallest.ai that raised within 45 days of this round, from Fundz verified event records.

  • Cursor raised $2.3B (Funding Round) on November 13, 2025.
  • Vivent Biosignals raised an undisclosed amount on November 24, 2025.
  • Momentic raised $15M (Series A) on November 24, 2025.
  • Opti raised $20M (Seed) on November 24, 2025.
  • Buildroid AI raised $2M (Pre-Seed) on November 24, 2025.
  • AI One raised $7M (Series A) on November 24, 2025.

Who to call at Smallest.ai, and when

A new round usually means Smallest.ai is about to hire and buy. The teams that reach out first get the meeting.

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Company Information

Company

Smallest.ai

Location

San Francisco, California, United States

About

Smallest.ai is an AI startup specializing in voice models, founded by Sudarshan Kamath and Akshat Mandloi in 2023. The company focuses on research, model training, and infrastructure to enhance its offerings. It has raised seed funding from notable investors, including Upsparks Capital, 3one4 Capital, and Better Capital. Smallest.ai aims to grow profitably while continuing to innovate in the AI space.

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Related People

1 contact
Verified contactsAkshat, Co-FounderSee plans and pricing
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