The OpenAI Realtime API is a developer interface for building voice agents that listen and speak in real time.
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AI tools for voice assistance
3,708 live tools · ranked by monthly traffic and community votes · dead links removed automatically
NPCs that actually think
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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.
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Amazon Lex is a managed AWS service for adding conversational interfaces to applications through voice and text.
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LiveKit Agents is an open source framework and cloud platform for building voice, video and physical AI agents and running them in production.
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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.
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Cartesia is a voice AI company that provides one API for speech generation, transcription and production voice agents fast enough for live conversation.
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Deepgram is a voice AI platform that exposes speech-to-text, text-to-speech and conversational agents through APIs.
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MeetGeek is an AI meeting assistant that records, transcribes and summarizes meetings, then carries the follow-up work forward.
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Deepdub is an AI voice platform that began in dubbing and now also offers a production-grade voice API for AI agents.
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ElevenLabs Conversational AI, now branded ElevenAgents, lets teams build, test and deploy voice and chat agents that handle customer conversations.
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Kokoro is an open-weight text-to-speech model with 82 million parameters.
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Piper is a fast, local neural text-to-speech engine that converts text into spoken audio on your own hardware, with no cloud service involved.
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ElevenLabs API is a developer interface to the company's audio models.
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Microsoft Azure AI Speech, now branded Azure Speech in Foundry Tools, is a cloud service for adding voice to applications and agents.
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Amazon Polly is a fully managed Amazon Web Services product that converts text into spoken audio on demand.
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Google Cloud Text-to-Speech is an API that turns written text into natural-sounding speech using Google's AI speech synthesis research.
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