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: August 11, 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
Ringg AI Founded 2023	Bengaluru, India	$6.64M	A no-code, multilingual multichannel AI agent platform that lets enterprises deploy production-grade agents across voice, chat, WhatsApp, and web for complex real-time conversations in 20+ languages.
Hume Founded 2021	New York, USA	~$74M–$80M (Seed + $12.7M Series A + $50M Series B; additional ~$17.8M 2025 extension reported)	Voice AI research company providing the data and evaluation layer for emotionally intelligent voice AI (expression measurement, human feedback, simulation/eval), plus empathic speech APIs (EVI/Octave).
Subtle Founded 2023	Palo Alto, 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	$65.1M	Enterprise AI support agents that resolve complex customer conversations across voice, chat, and email with self-improving resolution metrics and human-like latency.
Kuku FM Founded 2018	Mumbai, India	$242.3 million	Kuku FM is India's leading audio content platform offering audiobooks, stories, podcasts, and educational content in multiple Indian regional languages
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.
PyannoteAI Founded 2024	Paris, France	$9M	AI platform providing language-agnostic speaker intelligence (diarization) to enhance audio transcription, understanding, and analytics.
Fish Audio Founded 2025	Palo Alto, California, United States	$52M	AI voice generation platform offering expressive text-to-speech, voice cloning, and speech-to-text with fine-grained emotional controls, challenging ElevenLabs with open-source backing and enterprise features.
Flip Founded 2018	New York, USA	$31M total	A verticalized, LLM-powered voice AI platform designed to automate complex customer service interactions for retail and travel brands.
Rime Founded 2022	San Francisco, California, USA	$29.5M	Enterprise voice AI platform building ultra-realistic, linguistics-first conversational speech models for high-volume phone interactions.
fonio.ai Founded 2024	Vienna, Austria	>$20M	GDPR-compliant AI-powered phone assistant automating incoming/outgoing business calls with human-like German conversations.
PlayAI Founded 2016	Palo Alto, California, USA	$21 million	An AI platform for generating natural, human-sounding voices for applications like AI characters, audio content, and conversational agents.
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.
PolyAI Founded 2017	London, United Kingdom	$206.0M	A leading provider of lifelike voice AI agents for enterprise customer service that builds conversational assistants to automate complex customer support interactions.
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.
SoundHound AI, Inc. Founded 2005	Santa Clara, CA, USA	$250M+ total (incl. $25M preferred equity Jan 2023)	SoundHound AI provides a voice AI platform that enables businesses to offer customized conversational experiences to consumers.
Vida Global Inc Founded 2022	Cedar Park, Texas, United States	$22M	Vida provides an AI Agent Operating System that enables enterprises to build, deploy, and manage omnichannel AI agents that handle voice calls, texts, emails, and chats for customer service, lead qualification, scheduling, and sales automation.
Vocal Image Founded 2021	Tallinn, Estonia	$3.6M	An AI-powered mobile application that provides voice coaching and speech training.
Bland AI Founded 2023	San Francisco, California, United States	$106.0M	Enterprise voice AI platform that builds, deploys, and monitors AI phone agents for complex, high-stakes conversations using proprietary in-house voice models.
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.