| Ada ada.cx | AI/ML | Generated Text-to-speech (TTS) | USA, Europe |
| AgentVoice agentvoice.com | AI/Voice Automation | Text-to-Speech / Speech synthesis | US / EU |
| Aircall aircall.io | Cloud Infrastructure, AI/ML, Communications | Provision of inputs for AI Voice Agent. | USA |
| Anthropic anthropic.com | AI/ML | Text to speech | United States |
| Clueso clueso.io | AI/ML, Education Technology | Artificial Intelligence | United States of America |
| Coloop coloop.ai | AI/ML, Research Technology | Transcription service for converting audio and video to text | United States, United Kingdom |
| Coplay coplay.dev | Game Development / AI | Audio and voice generation | US/EU |
| Crescendo crescendo.ai | AI/Customer Experience | Text to Speech, Real Time conversations | United States |
| Cresta cresta.com | AI/ML, Customer Experience | TTS Provider | USA |
| Decagon decagon.ai | AI/ML, Customer Engagement | Text-to-speech AI services | USA, EU |
| Deeptrue deeptrue.org | AI/ML | Text-to-speech and voice synthesis services | United States |
| Dimedove dimedove.com | AI/ML, Lead Qualification, Insurance Technology | AI voice synthesis, text-to-speech, and audio generation services. | USA |
| Egress egress.com | Cybersecurity | Voice and video processing for security awareness training modules | US AWS Data Centers |
| Forethought forethought.ai | AI/Customer Support | Generated Text-to-speech (TTS) | United States |
| Gladly gladly.com | Customer Experience (CX) AI | Text to Speech service providing human-like audio responses from plain text | USA |
| Harvey harvey.ai | Legal Tech, AI Solutions | AI provider (including, voice input and output) | USA, European Union |
| HiPeople Data Partners hipeople.io | HR Tech | AI Interviews | US |
| Indigo indigo.ai | — | Speech transcription and synthesis | Poland (EU) |
| Invent useinvent.com | AI/Customer Service | Voice TTS and STT | USA |
| Jotform jotform.com | Productivity | AI voice technology | USA |
| Leexi leexi.ai | AI/ML, Productivity | Transcription | EU |
| Level3 level3.ai | AI/ML | Speech-to-text transcription and text-to-speech audio generation | USA |
| Lilt lilt.com | AI/ML, Localization | Voice synthesis technology | United States |
| Mindtickle mindtickle.com | Sales Enablement | Audio and speech processing | United States of America for US-residency customers; Netherlands and Belgium for others |
| MOD mod.app | AI/ML, Social Media Analytics | Speech-to-text transcription and audio processing | United States |
| Orbio orbio.work | HR Tech | STT - Language Generation | EU |
| OutRival, Inc. outrival.com | AI/ML | Text-to-speech voices for outbound calls | — |
| Parloa parloa.com | AI/ML | optional for AMP / RTT / RBA | US |
| Quo Resource Center openphone.co | Telecommunications | Text-to-speech & voice synthesis | US |
| Quo Resource Center quo.com | Telecommunications/AI | Text-to-speech & voice synthesis | US |
| Raycast raycast.com | Productivity | Speech-to-Text Conversion | United States |
| Risingteam risingteam.com | — | AI LLM services | USA |
| Segment segment.com | Cloud Infrastructure | AI features as enabled by customer for the purpose of summarization and sentiment analysis | USA, EU |
| SevenRooms sevenrooms.com | Hospitality Technology | Voice AI Services | United States |
| Showpad showpad.com | Sales Enablement, AI/ML | Translation and TTS | US |
| Squawkvoice squawkvoice.ai | AI Voice Technology | Text-to-speech synthesis (TTS) | United States |
| Supademo supademo.com | DevOps | AI-powered text-to-speech and voice synthesis | USA |
| Taskagi taskagi.net | AI/ML, Automation | Text-to-speech voice generation | USA |
| Twilio certificates.twilio.com | Communications Platform as a Service (CPaaS) | AI features as enabled by customer for the purpose of summarization and sentiment analysis | USA, EU |
| Twilio wwnw.twilio.com | CPaaS (Communications Platform as a Service) | AI features as enabled by customer for the purpose of summarization and sentiment analysis | USA, EU |
| Twilio twilio.com | Communication Platform as a Service (CPaaS) | AI features as enabled by customer for the purpose of summarization and sentiment analysis | USA, EU |
| Vapi vapi.ai | Voice AI, DevOps | Voices | United States, EU |
| Vendasta vendasta.com | AI/ML, Marketing Automation | Engineering | Not specified |
| Vetnio vetnio.com | HealthTech | Audio recording processing | EU |
| Vogent vogent.ai | AI/ML, Voice Technology | Text-to-speech and voice AI processing | US/EU |
| Voiceaiwrapper voiceaiwrapper.com | AI/ML | Voice AI Provider | United States |
| VOICEB.ai Docs voiceb.ai | AI/ML, Sales Automation | AI voice generation for agent calls | Poland |
| Wistia wistia.com | Video Marketing, Webinars, SaaS | AI text-to-speech services | USA |