Amazon Nova Sonic provides streaming speech-to-speech models for conversational applications and voice assistants.
Amazon Nova Sonic is a speech-to-speech model family whose current documentation describes Nova 2 Sonic. It supports bidirectional streaming, multilingual conversation, automatic language switching, expressive voices, and adaptive spoken responses based on input prosody.
The model handles natural turn taking and user interruptions while retaining conversational context. Developers can ground responses in enterprise information and use function calling, asynchronous tools, and audio or text inputs to build customer service automation and interactive voice applications.
Amazon Shopping
Wondery
Amazon Kids+
Amazon Translate
Shop the Show
Amazon Fire TV Smart TV
Amazon Fire TV
Amazon Music
Amazon Live
Online Consumer Baby Goods
Online Consumer Beauty
Online Consumer Home Goods
Retail Membership Program
AWS Lambda
Cloud Data Warehouse
Online Prescription Pharmacy
Amazon Bedrock
Amazon Leo
Amazon Marketplace
Amazon Ads
| Attribute | Amazon Nova Sonic | Deepslate Opal | |
|---|---|---|---|
| Provider | |  | |
| Founded | 1994 | 2024 | |
| Sells To | Consumers, Enterprise, Individuals | Developer | |
| Pricing Model | Advertising, Recurring, Transactional | Usage-based | |
| Ownership | Public | Venture-backed |
Provider
Founded 1994
Sells To Consumers, Enterprise, Individuals
Pricing Model Advertising, Recurring, Transactional
Ownership Public
Provider
Founded 2024
Sells To Developer
Pricing Model Usage-based
Ownership Venture-backed
Cartesia's Sonic is a text-to-speech model and API built for real-time voice applications.
Text to Speech is a speech synthesis API for voice agents and real-time applications.
Cartesia's Sonic is a text-to-speech model and API built for real-time voice applications.
OpenAI Realtime API provides conversational speech-to-speech models for developers building interactive voice agents.
OpenAI Realtime API provides conversational speech-to-speech models for developers building interactive voice agents.
Developer platform providing real-time and batch APIs for speech-to-text, text-to-speech, and voice agents.
Gemini Live API enables real-time voice and vision interactions through streaming conversational models.
Speechmatics' Speech-to-Text API is a multilingual automatic speech recognition service offered in real-time and batch modes with speaker diarization.
Deepgram's Speech-to-Text API is a conversational speech recognition service in real-time and pre-recorded modes.
Developer API platform for production-ready speech, transcription, music, agents, and audio generation.
Agent STT is a real-time speech-to-text API package built for AI voice agent workloads.
Deepgram's Text-to-Speech API generates streamed spoken audio for enterprise voice-agent applications.
Voice-to-text software that turns speech into formatted writing across apps.
AssemblyAI's Speech-to-Text API transcribes audio in streaming and pre-recorded modes with speaker diarization.
Developer API for streaming real-time speech-to-speech translation and dubbing over WebSocket.
Outspeed Voice Platform provides realtime voice infrastructure for AI applications with natural prosody and ultra-low latency.
Developer platform providing real-time and batch APIs for speech-to-text, text-to-speech, and voice agents.
Gemini Live API enables real-time voice and vision interactions through streaming conversational models.
Speechmatics' Speech-to-Text API is a multilingual automatic speech recognition service offered in real-time and batch modes with speaker diarization.
Deepgram's Speech-to-Text API is a conversational speech recognition service in real-time and pre-recorded modes.
Text to Speech is a speech synthesis API for voice agents and real-time applications.
Developer API platform for production-ready speech, transcription, music, agents, and audio generation.
Agent STT is a real-time speech-to-text API package built for AI voice agent workloads.
Deepgram's Text-to-Speech API generates streamed spoken audio for enterprise voice-agent applications.
Voice-to-text software that turns speech into formatted writing across apps.
AssemblyAI's Speech-to-Text API transcribes audio in streaming and pre-recorded modes with speaker diarization.
Developer API for streaming real-time speech-to-speech translation and dubbing over WebSocket.
Outspeed Voice Platform provides realtime voice infrastructure for AI applications with natural prosody and ultra-low latency.