AI Voice Agents

Ultravox

Speech-native model and platform for voice agents

Ultravox is a speech-native language model and hosted platform for realtime voice agents. The model takes audio as input directly, so an agent does not need a separate speech-to-text step.

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Vapi

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Developer platform for building voice agents

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Bland AI

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AI agents that place and answer phone calls

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Cognigy

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Enterprise platform for voice and chat AI agents

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Dasha

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Conversational AI platform for phone agents

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Deepgram Voice Agent API

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Speech, language model and voice behind one API

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ElevenLabs Agents

Voice agent platforms

Conversational voice agents from ElevenLabs

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