Voice Apis Research by Ry Walker
Category Report
Agentic Voice APIsCompare 19 voice AI models, speech APIs, managed phone-agent platforms, and open frameworks by architecture, current pricing, deployment control, and task reliability.
27 min read·
Product Profiles (20)
AWS Nova 2 Sonicaws.amazon.com/novaBland AIwww.bland.aiCartesiacartesia.aiDeepgram Auradeepgram.com/product/text-to-speechElevenLabs Conversational AIelevenlabs.io/agentsGemini Live APIai.google.dev/gemini-api/docs/live-apiGradiumgradium.aiGrok Voice APIdocs.x.ai/developers/models/speech-to-speechHume EVIwww.hume.ai/empathic-voice-interfaceInworldinworld.ai/voice-agentsLiveKit Agentslivekit.comModemmodem.devNVIDIA PersonaPlexresearch.nvidia.com/labs/adlr/personaplexOpenAI Realtime APIplatform.openai.com/docs/api-reference/realtimePipecatwww.pipecat.aiRetell AIwww.retellai.comRimerime.aiTwilio Conversation Relaywww.twilio.com/docs/voice/conversationrelayUltravoxwww.ultravox.aiVapivapi.ai