AI Startup Intelligence

AI Voice Agent Startups

Explore voice and speech AI startups building voice agents, transcription, speech generation, telephony infrastructure, and conversational interfaces.

Companies tracked: 93Key segments: voice agents, speech generation, transcriptionUpdated: June 17, 2026

Voice AI Market Snapshot

tracked companies

visible location clusters

funding signals surfaced

Voice AI is moving from standalone speech models toward full-stack agent infrastructure for calls, support, sales, and operations.

Representative Companies

A crawler-visible sample of companies from the AI Market Watch database.

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Company	Location	Funding	Focus
Synthflow AI Founded 2023	Berlin, Germany	$30 Million	A no-code platform for businesses to build, test, and deploy human-like AI voice agents for automating inbound and outbound customer calls. The platform is designed for enterprise-grade security, reliability, and scalability.
BoldVoice Founded 2021	New York, USA	$27.1M	An AI-powered speech and accent coaching platform designed to help non-native English speakers communicate with clarity and confidence in professional settings.
Caantin Founded 2023	San Francisco, California, USA	$500K (Pre-seed). Reportedly raising a $4M seed round.	An automated voice infrastructure platform that enables businesses to deploy advanced, voice-based customer support at scale.
Cybernet AI Founded 2022	Almaty, Kazakhstan	$0.0M	An enterprise-grade conversational AI platform specializing in high-accuracy speech recognition and synthesis for Turkic languages to automate large-scale customer communications.
Chime Labs Founded 2024	Sydney, Australia	$900K AUD	An AI-powered voice receptionist platform designed specifically for tradespeople and home service businesses to automate call handling, lead qualification, and job scheduling.
Otter.ai Founded 2016	Mountain View, California, USA	$73M	An AI-powered meeting assistant that generates real-time transcriptions, automated summaries, and action items for voice conversations.
Supertone Founded 2021	Seoul, South Korea	Approximately $35.6 million (acquired by HYBE)	Supertone is an AI voice company that develops technology for creating hyper-realistic and expressive voices, including singing voices. The company's technology can be used for various applications, such as content creation, entertainment, and virtual assistants.
Bolna Founded 2024	Bengaluru, India	$6.3M	An enterprise-grade voice AI orchestration platform designed to build, deploy, and manage high-performance, multilingual AI voice agents for automated business workflows.
Moises Founded 2019	Salt Lake City, USA	$50.25M	An AI-powered music platform and application that allows users to separate vocals and instruments from any song, master tracks, and practice music.
Aqua Voice Founded 2023	San Francisco	Not disclosed	YC-backed startup providing fast, accurate, and private frontier voice input as an AI layer to write and prompt into any application.
Cartesia Founded 2023	San Francisco, USA	$91M	A real-time multimodal AI company developing ultra-low latency generative voice models powered by novel State Space Model (SSM) architectures.
Hi Auto Founded 2019	Tel Aviv, Israel	$23M total ($15M Series A + $4.5M Seed + $3.5M additional; plus $4M credit line)	Hi Auto automates drive-thru order-taking with AI-powered voice technology for quick-service restaurants.
Flai Founded 2024	San Francisco, USA	$6.0M	An AI-powered conversational platform that provides human-like voice assistants specifically tailored to automate phone calls, SMS, and emails for automotive dealerships.
Uplift AI Founded 2024	San Francisco, USA	$3.5M	A voice-first AI platform developing foundational speech models for regional languages to provide digital access to non-literate populations in emerging markets.
Hume Founded 2021	New York, USA	$73.0M ($23M + $50M Series B)	An empathic AI research lab and technology company that develops the world's first emotionally intelligent voice interface and expression measurement APIs.
OfOne Founded 2022	San Francisco, USA	$500K+	An AI-powered voice automation platform specifically designed to automate drive-thru ordering for quick-service restaurants using Large Language Models (LLMs).
Deepgram Founded 2015	San Francisco, USA	$215M total	A foundational AI platform providing high-performance, real-time speech-to-text and text-to-speech APIs for developers and enterprises building voice-first applications.
NineNineSix Founded 2025	Bishkek, Kyrgyzstan	$0	A high-performance AI voice technology startup specializing in real-time, expressive text-to-speech (TTS) and automatic speech recognition (ASR) with a focus on underrepresented and localized languages.
Subtle Founded 2024	San Francisco, USA	$6.0M	A voice-first technology company developing specialized hardware and AI models designed for private, high-accuracy voice interaction and whisper-level dictation in any environment.
Giga Founded 2023	San Francisco, USA	$65.3M	An enterprise-grade voice AI platform that automates complex customer service interactions with human-like latency, emotional intelligence, and sub-second response times.