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Amazon (Nova)

Amazon Nova 2 Sonic

Released Dec 2, 2025

Amazon's second-generation speech-to-speech model on Bedrock for real-time voice agents, with native telephony integrations. Nova 2.5 Sonic has since superseded it.

Price per minute
—
Pricing
Token-priced on Bedrock (speech and text input/output); exact rates not retrievable from aws.amazon.com/bedrock/pricing.
Inputs
audio, text
Tool calling
Yes
Languages
7
Voices
—
Big Bench Audio
88.1%
Access
Generally available
Licence
Proprietary
Strengths & weaknesses

Strengths

  • Integrates with Amazon Connect, Twilio, Vonage, AudioCodes, LiveKit and Pipecat
  • Asynchronous tool handling and RAG grounding
  • 1M-token context window

Weaknesses

  • 8-minute connection limit, so long calls need session renewal
  • Superseded by Nova 2.5 Sonic
  • Big Bench Audio 88.1% (AA, Mar 2026 version)

Not notable (AA Big Bench Audio #21). The Bedrock model card says Active, with EOL no sooner than 2026-12-02; drop it if superseded models are out of scope. AA's listing is 'Nova 2.0 Sonic (Mar 2026)', which suggests a March 2026 update; no AWS page for that update was found. Voice count conflicts: the language-support table lists 16 voice IDs, and versions of the service card say 18 and 22, so it's null. Pricing rows on the Bedrock page didn't render.

Links

API model strings

  • bedrockamazon.nova-2-sonic-v1:0
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