Cartesia is a voice AI company that provides one API for speech generation, transcription and production voice agents fast enough for live conversation.
AI tools for voice agents
3,708 live tools · ranked by monthly traffic and community votes · dead links removed automatically
Vapi is a developer platform for building, testing and deploying voice AI agents that talk to customers on the phone.
Murf AI is a voice platform that turns text into natural-sounding speech and also runs conversational voice agents.
Deepgram is a voice AI platform that exposes speech-to-text, text-to-speech and conversational agents through APIs.
NPCs that actually think
Vocode is an open-source toolkit for building voice-based AI agents.
Babelbeez puts AI voice agents directly on websites to handle customer enquiries, support requests, and sales conversations through speech-to-speech interactions
gpt-realtime-2
Sub-second speech-to-text across 55+ languages with AI voice agents
A dental office gets 200 calls a week asking about appointment times, insurance coverage, and procedure pricing
Fixie
ElevenLabs Conversational AI, now branded ElevenAgents, lets teams build, test and deploy voice and chat agents that handle customer conversations.
Hume EVI, the Empathic Voice Interface, is a voice AI API for building agents that pick up on how a person sounds as well as what they say.
The OpenAI Realtime API is a developer interface for building voice agents that listen and speak in real time.
Pipecat is an open-source Python framework for building voice and multimodal AI agents that talk in real time.
Retell AI is a voice agent platform for automating phone calls.
LiveKit Agents is an open source framework and cloud platform for building voice, video and physical AI agents and running them in production.
The Deepgram Voice Agent API is one real-time API that combines speech recognition, language model orchestration and speech synthesis, so developers do not have to stitch separate services together.
Developers building real-time communication features into apps get a complete solution that handles voice, video, chat, and live streaming through APIs and SDKs
Enterprise sales teams can't manually handle thousands of customer interactions across multiple channels
An AI agent calls businesses and government offices on your behalf while you go about your day
ElevenLabs API is a developer interface to the company's audio models.
Microsoft Azure AI Speech, now branded Azure Speech in Foundry Tools, is a cloud service for adding voice to applications and agents.
Amazon Lex is a managed AWS service for adding conversational interfaces to applications through voice and text.