Presspool

AI niche map

Voice AI companies

Started September 28, 2026 · Updated September 28, 2026 · Presspool

Companies whose main product is voice AI: speech synthesis and voice models, speech recognition models, real-time voice agent platforms, and AI phone and voice agents sold as the core product. Presspool has verified 19 companies on this map so far. Each entry is taken from the company's own website and confirmed by an independent source, both linked on the entry. No company pays to be listed.

CompanyWhat it doesLatest announced financing
ElevenLabsElevenLabs offers an AI voice generator and a voice agents platform, with thousands of lifelike voices across dozens of languages through APIs and SDKs. (site, source)$500M, Series D (February 4, 2026)
ParloaParloa runs an AI agent management platform whose agents handle millions of customer conversations for contact centers in any language. (site, source)$350M, Series D (January 15, 2026)
SesameSesame makes personal voice agents and is developing audio-first eyewear for talking to them hands-free. (site, source)$250M, Series B (October 21, 2025)
DeepgramDeepgram provides enterprise voice AI APIs for speech-to-text, text-to-speech and voice agents built for real-time conversation. (site, source)$130M, Series C (January 13, 2026)
Assort HealthAssort Health runs an AI agents platform that handles the patient journey, including patient phone calls, for healthcare organizations. (site, source)$120M, Series C (June 24, 2026)
CartesiaCartesia builds low-latency speech models on state space models and serves them by cloud API, on-premise or on-device. (site, source)$100M (date not confirmed)
GradiumGradium builds real-time voice AI models for text-to-speech, speech-to-text and voice cloning. (site, source)$100M (seed total after extension), Seed extension (July 8, 2026)
LiveKitLiveKit offers an open-source framework and developer cloud for building, deploying and scaling voice, video and physical AI agents. (site, source)$100M, Series C (date not confirmed)
PolyAIPolyAI builds lifelike voice AI agents for enterprises on its Agentic Dialog Platform. (site, source)$86M, Series D (December 15, 2025)
SpeechmaticsSpeechmatics builds low-latency speech-to-text APIs that handle accents, multiple speakers and multilingual speech. (site, source)$62M, Series B (June 28, 2022)
Fish AudioFish Audio provides text-to-speech, voice cloning and voice-AI APIs for building voice agents, and hosts a large library of user voices. (site, source)$52M, Seed (July 28, 2026)
AssemblyAIAssemblyAI is voice AI infrastructure for developers, with APIs for speech-to-text, real-time transcription, speech understanding and voice agents. (site, source)$50M, Series C (December 4, 2023)
BlandBland is an enterprise voice AI platform for phone agents in regulated industries, with models built for phone calls. (site, source)$50M, Series C (June 16, 2026)
VapiVapi is a platform where developers build, deploy and improve voice agents. (site, source)$50M, Series B (May 12, 2026)
RimeRime makes conversational voice models for enterprise customer conversations. (site, source)$24M, Series A (July 15, 2026)
DeepdubDeepdub provides AI dubbing and expressive, on-demand AI voice performance. (site, source)$20M, Series A (February 10, 2022)
Synthflow AISynthflow is an enterprise voice AI agent platform with its own telephony for automating phone calls. (site, source)$20M, Series A (June 25, 2025)
Smallest.aiSmallest.ai offers a real-time voice AI suite for enterprises: voice agents, speech-to-text, text-to-speech and a full-duplex speech-to-speech model. (site, source)$13M, Series A (July 31, 2026)
Retell AIRetell AI is a voice agent platform for automating phone calls. (site, source)$4.6M, Seed (date not confirmed)

Which of these companies AI names

On September 28, 2026, Presspool asked the 8 questions below on ChatGPT, Gemini, Copilot, Google AI Mode and Google AI Overviews and recorded 38 answers. Not sampled: 2 Google AI Overviews answers. A company counts when an answer names it or cites its website. Answers vary from run to run, so each count is a dated sample, not a verdict.

CompanyNamed or cited inChatGPTGeminiCopilotGoogle AI ModeGoogle AI Overviews
ElevenLabs31 of 38 answers6 of 86 of 87 of 87 of 85 of 6
Parloa0 of 38 answers0 of 80 of 80 of 80 of 80 of 6
Sesame0 of 38 answers0 of 80 of 80 of 80 of 80 of 6
Deepgram16 of 38 answers3 of 83 of 85 of 83 of 82 of 6
Assort Health0 of 38 answers0 of 80 of 80 of 80 of 80 of 6
Cartesia11 of 38 answers2 of 82 of 84 of 81 of 82 of 6
Gradium1 of 38 answers0 of 80 of 81 of 80 of 80 of 6
LiveKit4 of 38 answers3 of 80 of 80 of 81 of 80 of 6
PolyAI14 of 38 answers3 of 84 of 83 of 82 of 82 of 6
Speechmatics4 of 38 answers0 of 82 of 81 of 81 of 80 of 6
Fish Audio6 of 38 answers1 of 81 of 82 of 81 of 81 of 6
AssemblyAI7 of 38 answers0 of 81 of 82 of 82 of 82 of 6
Bland15 of 38 answers4 of 83 of 83 of 83 of 82 of 6
Vapi16 of 38 answers4 of 83 of 83 of 83 of 83 of 6
Rime1 of 38 answers0 of 80 of 80 of 81 of 80 of 6
Deepdub0 of 38 answers0 of 80 of 80 of 80 of 80 of 6
Synthflow AI14 of 38 answers3 of 83 of 83 of 83 of 82 of 6
Smallest.ai4 of 38 answers1 of 81 of 81 of 81 of 80 of 6
Retell AI20 of 38 answers5 of 84 of 84 of 84 of 83 of 6

Sources the AI apps cited most for these questions

  1. retellai.com: 13 of 38 answers
  2. youtube.com: 7 of 38 answers
  3. reddit.com: 6 of 38 answers
  4. inworld.ai: 5 of 38 answers
  5. brilo.ai: 4 of 38 answers
  6. elevenlabs.io: 3 of 38 answers
  7. getvoip.com: 3 of 38 answers
  8. linkedin.com: 3 of 38 answers
  9. ringly.io: 3 of 38 answers
  10. techcrunch.com: 3 of 38 answers
  11. zapier.com: 3 of 38 answers
  12. aisotools.com: 2 of 38 answers
  13. artificial-intelligence-wiki.com: 2 of 38 answers
  14. cartesia.ai: 2 of 38 answers
  15. google.com: 2 of 38 answers

What counts as Voice AI

A company joins this map when its own site describes Voice AI as its main product and an independent source confirms it. Out of scope: contact-center suites where voice AI is a feature, voice features inside large platforms, and telephony carriers. Definitions are versioned; this is version 1. Corrections need a public source: see Contact.

Questions this map tracks

Changes