Smallest

Smallest AI develops low-latency voice AI models and speech infrastructure for building real-time conversational applications and AI voice agents.

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Founded
2023
Headquarters
San Francisco, US
Team Size
51-200
Funding Stage
Seed

Overview

Smallest AI is a voice AI infrastructure company building highly efficient speech models and conversational AI systems for enterprise applications. The company focuses on delivering production-ready voice technology that combines low latency, high-quality speech generation, and cost-efficient deployment. Rather than relying on increasingly large foundation models, Smallest AI develops compact, specialized models capable of delivering real-time performance for customer support, sales automation, virtual assistants, healthcare, financial services, and other voice-driven applications.

Its platform includes text-to-speech (TTS), speech-to-text (STT), voice cloning, speech-to-speech conversion, and AI voice agents through developer-friendly APIs. The company's models are designed to generate natural, multilingual speech with response times measured in milliseconds, making them suitable for interactive conversations where speed and responsiveness are critical. Enterprise customers also benefit from security and compliance features, including ISO 27001, SOC 2 Type II, GDPR, and HIPAA compliance, enabling deployment in regulated industries.

Founded by Sudarshan Kamath and Akshat Mandloi, Smallest AI is building infrastructure for the next generation of conversational AI by prioritizing efficiency over model size. Its technology is designed to reduce inference costs while maintaining high-quality voice interactions, helping businesses deploy scalable AI voice solutions without requiring extensive computing resources. Following its $8 million seed round, the company is expanding its product portfolio and global presence as demand for enterprise voice AI continues to grow.

How Smallest Works

01
STEP 01

Configure Agent

Create a voice agent using prompts or a visual conversation builder and define its behavior, knowledge, and objectives.

02
STEP 02

Connect Knowledge

Attach documents, websites, APIs, or business systems so the agent can retrieve relevant information during conversations.

03
STEP 03

Select Models

Choose speech and language models for text-to-speech, speech recognition, or conversational reasoning based on the application's requirements.

04
STEP 04

Deploy Channels

Publish the agent to phone numbers, websites, or custom applications using the platform's deployment and integration capabilities.

05
STEP 05

Monitor Performance

Review transcripts, recordings, analytics, and conversation insights to evaluate and improve voice agent performance over time.

Details

Attribute
Information
Core Platform
Provides a unified platform for building, deploying, and managing AI voice agents alongside speech and language models from a single interface.
AI Models
Offers proprietary models for text-to-speech, speech-to-text, speech-to-speech, and language understanding optimized for real-time voice interactions.
Voice Agent Builder
Enables users to create conversational voice agents using prompts or visual conversation flows without building the orchestration layer from scratch.
Knowledge Sources
Voice agents can be grounded using documents, PDFs, website URLs, and external knowledge sources to answer domain-specific questions.
Conversation Capabilities
Supports tool calling, API execution, human call transfers, dynamic variables, and conversation analytics within voice workflows.
Phone Infrastructure
Provides phone numbers across multiple countries and supports SIP-based bring-your-own-number deployments for production voice applications.
Language Coverage
Supports multilingual speech generation and recognition across dozens of languages, including several Indic languages.
Developer Resources
Provides REST APIs, SDKs, documentation, sample projects, and self-hosting options for selected speech models.

Common Use Cases

Building AI voice agents for customer support and inbound phone calls
Creating outbound calling agents for sales, reminders, and customer engagement
Converting text into natural-sounding speech for voice applications
Transcribing speech into text for meetings, calls, and voice workflows
Developing multilingual voice assistants for web and mobile applications
Integrating voice AI capabilities into existing products through APIs
Automating call handling with conversational AI and workflow integrations

Platform Evaluation

Platform Strengths

  • Combines voice agents, speech models, and orchestration tools within a single platform
  • Supports low-latency speech processing for real-time conversational experiences
  • Offers multiple speech technologies including text-to-speech, speech-to-text, and speech-to-speech models
  • Provides visual workflow building alongside prompt-based agent creation
  • Supports multilingual voice applications across numerous languages
  • Includes developer tooling, APIs, SDKs, and self-hosting options for selected services

Current Limitations

  • Public documentation indicates that some capabilities, such as certain speech-to-speech features, are in early access
  • Self-hosting support differs between products and deployment options
  • Enterprise plans may be required for selected models, deployment options, or higher usage limits

Frequently Asked Questions

Smallest AI is a voice AI platform that offers speech models, AI voice agents, and developer tools for building real-time conversational applications.

The platform provides text-to-speech, speech-to-text, speech-to-speech, and language models optimized for voice AI workloads.

Yes, developers can create AI voice agents using prompts or visual conversation flows and connect them with external knowledge and APIs.

Yes, the platform supports API calls, webhooks, and integrations with business tools for workflow automation.

Yes, the platform supports multilingual speech generation and recognition across numerous languages, including several Indic languages.

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