13 companies tracked in this category. Names and one-line descriptions are free to browse — pricing model, funding, founding year, headquarters, and cited sources are in the full dataset.
| Company | Description |
|---|---|
| AssemblyAI | Voice AI infrastructure APIs offering speech-to-text (pre-recorded and real-time), a Voice Agent API, and speech-understanding APIs to transcribe and act on audio data. |
| Bland AI | AI phone-calling agent platform that lets businesses build and deploy autonomous voice agents to handle inbound and outbound phone calls at scale. |
| Cartesia | Real-time voice AI company building the Sonic family of low-latency text-to-speech and speech-to-speech models for developers and voice agents. |
| Deepgram | Speech-to-text, text-to-speech, and voice agent API platform for real-time transcription and voice interaction in applications. |
| ElevenLabs | AI-powered text-to-speech, voice cloning, dubbing, and audio generation platform built on deep learning voice models. |
| Hume AI | Emotion-aware voice AI platform (Empathic Voice Interface, EVI) and API letting developers build voice applications that detect and respond to human vocal emotion and tone. |
| Murf AI | AI-powered text-to-speech and voice-generation platform with 200+ synthetic voices across 30+ languages, used for voiceovers, video dubbing, and voice agents. |
| PlayHT (PlayAI) | AI voice generation platform offering multi-speaker text-to-speech, voice cloning, and pronunciation customization for voiceovers and applications; acquired by Meta in 2025. |
| Resemble AI | Enterprise generative-voice platform for AI voice cloning, text-to-speech, and speech-to-speech conversion, plus real-time deepfake/audio-video detection and watermarking. |
| Sesame AI | Conversational AI company building emotionally expressive, low-latency voice companions (Maya and Miles) powered by its Conversational Speech Model (CSM). |
| Speechmatics | Speech recognition and voice AI platform providing real-time and batch speech-to-text and text-to-speech across 56+ languages via API and on-premises deployment. |
| Vapi | Developer platform and API for building, testing, and deploying voice AI agents that place and receive phone calls, orchestrating transcription, LLM, and text-to-speech in real time. |
| WellSaid Labs | Enterprise text-to-speech platform offering licensed, actor-based synthetic voices for commercial audio such as e-learning, marketing, and corporate communications. |