AI Voice Agents · United States

Top 30 AI Voice Agent Companies in US

The top 30 AI voice agent companies in the US at Series A or later: privately held, US-headquartered, ranked by total capital raised, with most recent round, offering and revenue model for each. Data compiled 18 September 2026.

• — Capital is heavily concentrated at the very top — ElevenLabs alone accounts for 16.6% of the $5.68B raised across all 30 companies, and the top 5 companies (ElevenLabs, Talkdesk, Decagon, Capacity, EliseAI) account for 50.2% of total funding.
• — Series B and C are the dominant funding stages — 11 of 30 companies are currently at Series B and 9 at Series C, together representing two-thirds of the list, reflecting a market still mid-scale-up rather than dominated by early seed bets or late-stage mega-rounds.
• — The sector clusters tightly around the Bay Area and New York — 12 of 30 companies (40%) are headquartered in San Francisco and 6 more (20%) in New York, with the remainder spread across secondary tech hubs like Mountain View, Redwood City, and San Mateo.

Editorial list Coverage: US HQ, operating Filter: Private · Series A+ · AI voice agent Ranked by: Total funding Data source: akta.pro Company Data Updated: 18 Sep 2026

Top 30 AI voice agent companies in the US

Top 30 ai voice agent companies US, ranked by total funding, with HQ, most recent funding round, total funding, product offering, top management, and revenue model for each. HQ is shown beneath each company name.

Company	Category	Most Recent Round	Total Funding	Offering	Management	Revenue Model
ElevenLabs 🇺🇸 New York, NY	AI Voice & Audio Generation Platform	Series D Feb 2026	Funding $942M	Foundational AI audio platform providing text-to-speech, speech-to-text, voice cloning, AI music, dubbing, and conversational AI agents (ElevenAgents) sold via API, creative studio, and consumer app.	Mateusz (Mati) Staniszewski Co-Founder & CEO	Usage Based Subscription Recurring Marketplace Commission
Talkdesk 🇺🇸 San Francisco, CA	AI-Native Contact Center / CX Automation Platform	Series D Aug 2021	Funding $592M	Cloud-native Customer Experience Automation (CXA) platform built on agentic AI, orchestrating autonomous AI voice agents (Autopilot) across the customer journey for enterprise contact centers.	Tiago Paiva Founder and CEO	Subscription Recurring Usage Based
Decagon 🇺🇸 San Francisco, CA	Enterprise AI Concierge / Customer Support Agents	Series D Jan 2026	Funding $481M	AI concierge platform that automates enterprise customer support across voice, chat, and email using Agent Operating Procedures.	Jesse Zhang CEO & Co-founder	Subscription Recurring
Capacity 🇺🇸 Saint Louis, MO	AI-Powered Customer Experience Automation Platform	Series E Sep 2026	Funding $443M	AI-powered CX automation platform deploying virtual agents across chat, voice, SMS, and email, including a dedicated Voice AI Agent product.	David Karandish Founder & CEO	Subscription Recurring
EliseAI 🇺🇸 New York, NY	Vertical Conversational AI for Housing & Healthcare	Series E Aug 2025	Funding $392M	Agentic conversational AI platform (VoiceAI) automating leasing, maintenance, and resident communications for housing operators, and patient scheduling for healthcare practices.	Minna Song Founder and CEO	Subscription Recurring Usage Based
Sesame 🇺🇸 San Francisco, CA	Voice-First Personal AI Agents	Series B Oct 2025	Funding $308M	Builds voice-first personal AI agents (Maya, Miles) powered by its proprietary Conversational Speech Model, delivered via mobile/web apps and forthcoming intelligent eyewear.	Brendan Iribe Co-Founder & CEO	Freemium Hardware Sales Licensing Royalties
Presto 🇺🇸 Redwood City, CA	Drive-Thru Voice AI for QSR	Series D Feb 2019	Funding $222M	Neurosymbolic Voice AI platform (Presto Voice) automating drive-thru order-taking for quick-service restaurant chains.	Krishna K. Gupta Co-founder and CEO	Subscription Recurring Managed Services
Deepgram 🇺🇸 San Francisco, CA	Voice AI Infrastructure & Agent Platform	Series C Aug 2026	Funding $218M	Voice AI platform delivering real-time speech-to-text, text-to-speech, and a Voice Agent API for building conversational voice agents.	Scott Stephenson Co-founder and CEO	Usage Based Subscription Recurring
Observe.AI 🇺🇸 Redwood City, CA	Agentic AI Platform for Contact Centers	Series C Apr 2022	Funding $214M	Agentic CX platform delivering VoiceAI Agents and ChatAI Agents for autonomous customer resolution, powered by a proprietary Contact Center LLM.	Swapnil Jain Co-Founder and CEO	Subscription Recurring Usage Based
Cartesia 🇺🇸 San Francisco, CA	Real-Time Voice AI Platform	Series B Oct 2025	Funding $213M	Real-time voice AI platform built on State Space Model architecture, delivering TTS (Sonic), STT (Ink), and a Line voice agent orchestration product.	Karan Goel CEO & Founder	Subscription Recurring Usage Based Freemium
Posh AI 🇺🇸 Boston, MA	Agentic AI Platform for Banking	Series B Jun 2024	Funding $145M	Agentic AI platform purpose-built for banks and credit unions, providing a Voice Assistant and Digital Assistant that replace legacy IVRs.	Karan Kashyap Co-founder & CEO	Subscription Recurring
Avoca 🇺🇸 New York, NY	Vertical AI Voice Agent for Home Services	Series B Apr 2026	Funding $126M	Vertical AI voice agent (AI CSR) autonomously handling inbound calls for HVAC, plumbing, and electrical home-service businesses.	Tyson Chen Co-founder	Subscription Recurring Managed Services
AssemblyAI 🇺🇸 San Francisco, CA	Voice AI / Speech-to-Text API Platform	Series C Dec 2023	Funding $113M	Voice AI API platform offering speech-to-text plus a bundled Voice Agent API combining STT, LLM, and TTS in one interface for building voice agents.	Dylan Fox Founder & CEO	Usage Based Subscription Recurring
Replicant 🇺🇸 San Francisco, CA	Conversational AI / Contact Center Automation	Series B Apr 2022	Funding $113M	Conversation Automation platform deploying AI agents that handle end-to-end customer interactions across voice, chat, and SMS.	Gadi Shamia Co-Founder and CEO	Subscription Recurring Usage Based
Bland AI 🇺🇸 San Francisco, CA	Enterprise Voice AI Platform	Series C Jun 2026	Funding $106M	Enterprise voice AI platform for building, deploying, and managing automated inbound/outbound phone agents on a fully proprietary voice stack.	Isaiah Granet Co-founder and CEO	Usage Based Subscription Recurring
Infinitus Systems 🇺🇸 San Francisco, CA	Healthcare Voice AI Platform	Series C Oct 2024	Funding $103M	Safety-first healthcare voice AI platform automating phone calls for benefit verification, prior authorization, and patient engagement.	Ankit Jain Co-Founder and CEO	Subscription Recurring Usage Based
Yellow.ai 🇺🇸 San Mateo, CA	Agentic AI / Enterprise Voice AI Platform	Series C Aug 2021	Funding $102M	Enterprise agentic AI platform (Nexus) with a dedicated single-runtime enterprise voice AI product, Nexus Vox, supporting 500+ languages.	Raghu Ravinutala CEO & Co-founder	Subscription Recurring Usage Based
Regal 🇺🇸 New York, NY	AI Voice Agent Platform for Customer Engagement	Series A Sep 2022	Funding $82.1M	AI Agent Platform providing a no-code AI Voice Agent Builder for enterprise voice, SMS, chat, and web agents with Forward Deployed Engineering support.	Alex Levin Co-founder and CEO	Subscription Recurring Usage Based
Syllable 🇺🇸 Mountain View, CA	Provider-Agnostic Agentic AI / Voice Agent Platform	Series C Feb 2022	Funding $82.0M	Provider-agnostic agentic AI platform (originated as Syllable Patient Assistant) enabling enterprises to build and run production voice and chat AI agents.	Kobus Jooste Chief Executive Officer	Subscription Recurring Usage Based Professional Services
Stella Automotive AI 🇺🇸 Tampa, FL	Vertical AI Voice Agent for Automotive Dealerships	Series B Jun 2026	Funding $78.8M	Conversational AI voice agent platform (STELLA) purpose-built for automotive dealerships, answering calls, booking appointments, and running outbound campaigns.	Rich Sands CEO	Subscription Recurring
Level AI 🇺🇸 Mountain View, CA	Contact Center AI Platform with Voice Agents	Series C Jul 2024	Funding $74.4M	Full-stack contact center AI platform including an AI Virtual Agent (voice) with sub-2-second latency, plus AI Workers, Auto-QA, and Agent Assist.	Ashish Nagar Founder and CEO	Subscription Recurring
Hume AI 🇺🇸 New York, NY	Empathic Voice AI Platform	Series B Mar 2024	Funding $72.8M	Voice AI foundation model company building the Empathic Voice Interface (EVI), a speech-to-speech conversational model with emotional intelligence used to power voice agents.	Andrew Ettinger CEO	Subscription Recurring Usage Based Licensing Royalties Freemium
Vapi 🇺🇸 San Francisco, CA	Developer-First Voice AI Agent Platform	Series B May 2026	Funding $70.6M	Developer-first voice AI platform orchestrating STT, LLM, and TTS providers into production voice agents for phone calls and customer support.	Jordan Dearsley Founder and CEO	Usage Based Subscription Recurring
Giga 🇺🇸 San Francisco, CA	Voice-First Enterprise AI Agent Platform	Series A Aug 2025	Funding $64.6M	Voice-first and omnichannel AI agent platform automating multilingual enterprise customer support with real-time hallucination correction.	Varun Vummadi Co-founder and CEO	Subscription Recurring Usage Based Managed Services
Tavus 🇺🇸 San Francisco, CA	Conversational Video/Voice AI Human Platform	Series B Nov 2025	Funding $64.2M	Builds proprietary foundational models for real-time conversational AI humans (voice and video), delivered via developer API (CVI) and consumer companion app (PALs).	Hassaan Raza Chief Executive Officer	Subscription Recurring Usage Based Freemium
Lace 🇺🇸 Mountain View, CA	Vertical AI Voice Agent for Home Services	Series A Mar 2026	Funding $59.1M	AI-powered revenue automation platform for home-services call centers, featuring an autonomous voice agent (AI CSR) with a revenue intelligence engine.	Boris Valkov Founder	Subscription Recurring
Palona AI 🇺🇸 Palo Alto, CA	Vertical AI Voice Agent for Restaurants	Series A Aug 2026	Funding $58.3M	Vertical AI platform for restaurants providing a voice AI agent that answers phone calls 24/7 for orders and reservations, plus computer vision monitoring.	Maria Zhang CEO and Co-Founder	Subscription Recurring
Slang 🇺🇸 New York, NY	Restaurant Voice AI	Series B Feb 2026	Funding $56.0M	Voice AI platform serving as a 24/7 phone concierge for restaurants, answering inbound calls and managing reservations.	Alex Sambvani Co-Founder and CEO	Subscription Recurring Professional Services
Numa 🇺🇸 Oakland, CA	AI Customer Operations Platform for Automotive Dealerships	Series B Oct 2024	Funding $44.1M	AI customer-operations platform for auto dealerships built around a Smart Inbox, including Operator, a voice AI receptionist.	Tasso Roumeliotis Founder & CEO	Subscription Recurring Usage Based
Quiq 🇺🇸 Bozeman, MT	Enterprise Agentic AI / Voice AI Platform	Series C Apr 2022	Funding $44.0M	Enterprise agentic AI platform unifying voice, messaging, and human agents, with a dedicated Voice AI product for natural spoken conversations.	Michael Myer Chief Executive Officer & Co-Founder	Usage Based Professional Services

What AI voice agent companies are

AI voice agent companies build software that carries a real-time, spoken conversation on a company's behalf — answering or placing phone calls, taking orders, booking appointments, or resolving support requests — rather than assisting a human agent or analyzing calls after the fact. The 30 companies on this page sit in four overlapping groups: enterprise contact-center platforms, foundational voice AI providers whose speech models double as agent-building blocks, vertical specialists built around one call type, and developer-facing agent-building platforms.

What separates a voice agent from conversational AI generally is where the value is created. A text-only chatbot assists a human agent or handles typed queries; a voice agent independently carries the call itself, in real time, with no text intermediary. That distinction shows up in pricing: 19 of the 30 companies bill on a usage basis (per minute or per call) rather than a flat seat license, reflecting the live compute cost of holding a conversation.

The sector splits along vertical lines almost as much as horizontal ones. Healthcare, automotive, home services and restaurants each support at least two dedicated voice-agent vendors, alongside horizontal contact-center platforms that serve any industry. Enterprise adoption is concentrated in customer support and appointment scheduling; consumer-facing personal assistants remain a smaller, earlier-stage segment.

This list covers privately held, US-headquartered companies at Series A or later. Public companies, contact-center BPOs that operate call centers on behalf of clients rather than sell software, and pure speech-recognition or text-to-speech infrastructure with no agent-facing product are out of scope.

How akta.pro classifies this industry

Companies are tagged against standard industry codes and against akta.pro's internal taxonomy, so the same set can be rebuilt by code, by segment, or by a combination of both.

NAICS

• 511210 Software publishers
• 518210 Computing infrastructure providers, data processing, web hosting, and related services
• 541511 Custom computer programming services

SIC

• 7372 Prepackaged software
• 7379 Computer related services, not elsewhere classified
• 7371 Computer programming services

Internal taxonomy

• Voice Assistants & Voice UI
• Contact Center Speech AI
• Conversational AI Platforms
• Conversational NLP & Dialogue Management

Industry codes are provided for cross-referencing against public filings and procurement records. akta.pro classification is independent of them, so a company may carry an internal segment without a matching NAICS or SIC registration.

Methodology

• Universe: private, operating companies HQ'd in the US, with Series A or later funding, whose core offering builds, orchestrates, or delivers AI voice agents (conversational voice AI, voice-first customer/contact-center agents, or voice-agent development platforms) as classified under akta.pro's Voice Assistants & Voice UI, Contact Center Speech AI, Conversational AI Platforms, and Conversational NLP & Dialogue Management industry codes.
• Retrieval: candidates were pulled via akta.pro's generate_company_list, sorted by total funding descending, using filters for private/operating status, US HQ, the above industry codes, and Series A+ funding stage. 75 of a possible 162 matching candidates were retrieved and enriched via company_data_concise, in descending funding order.
• Qualification: every enriched candidate was individually assessed against a core-offering-fit test. Companies where voice is a secondary add-on to a broader platform (e.g. CCaaS phone systems, call-tracking/attribution tools, conversation-intelligence analytics, sales-intelligence or recruiting platforms) were excluded even when tagged with a matching industry code. Foundation-model providers, pure ASR/TTS infrastructure with no agent-facing product, consumer hardware, and companies whose true corporate HQ was outside the US (verified via public sources for two borderline cases) were also excluded.
• Ranking: the qualified pool already exceeded the requested count of 30 while enriching in descending-funding order, so the top 30 by total_funding_usd were kept; no missing-player repair pass or expansion round was needed.
• Sources: total funding, funding stage/date, revenue estimates, headcount, founding year, and management/location data are sourced directly from akta.pro firmographic and funding records. Nothing is inferred from web search except two HQ-location verifications (both leading to exclusion, not inclusion).
• Offering and category text is condensed from each company's akta.pro core_offering and product_and_service fields; qualification_reason is a one-line summary of why voice-agent capability is the company's central operating thesis.
• This is a funding-ranked snapshot as of September 18, 2026; funding figures reflect akta.pro's most recently recorded round for each company and may not capture rounds announced after that date.

Data via akta.pro Company Database & Management/Product Profiles Compiled 18 Sep 2026