agent capability/voice
Voice I/O
Realtime voice or telephony input/output.
9 active agents tagged · verified against the catalog seed.
TAGGED
9 agents with voice i/o
Sierra
Sierra · digital-employee
chat/voice/api · cloud · Outcome-based (per resolved conversation); enterprise contracts
Decagon
Decagon · digital-employee
chat/voice/api · cloud · Enterprise; per-resolution or per-conversation pricing — quote-based
Vapi
Vapi · voice-agent
api/voice · cloud · Usage-based: ~$0.05/min platform fee + model/telephony costs
Bland AI
Bland AI · voice-agent
api/voice · cloud · Usage-based per-minute; enterprise plans
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Retell AI
Retell AI · voice-agent
api/voice · cloud · Usage-based (~$0.07+/min); enterprise plans
Synthflow
Synthflow · voice-agent
api/voice · cloud · Plans from ~$29/mo; per-minute overages
ElevenLabs Agents
ElevenLabs · voice-agent
api/voice · cloud · Included in ElevenLabs plans; per-minute credits
Deepgram Voice Agent
Deepgram · voice-agent
api/voice · cloud · Pay-as-you-go per-minute (~$0.08/min) — verify
Grok Voice Agent API
xAI · voice-agent
api/voice · cloud · $0.08/min agent audio; telephony +$0.01/min; STT $0.10-0.20/hr; TTS $4.20/M chars
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