Amazon Nova 2.5 Sonic
Nova 2.5 Sonic is the October 2026 speech-to-speech release for real-time conversations. It is Active on Bedrock.
What the release provides
It uses InvokeModelWithBidirectionalStream, supports tool use and returns speech and text. Asynchronous tool calls let a conversation continue while an external operation runs.Amazon Nova 2.5 Sonic Bedrock model card
How to use it well
Practical guidance. For a customer-service call, keep tool completion separate from a spoken promise. Confirm the actual operation result before saying that a change is complete. Review interruptions, silence and recovery from a slow tool in the complete voice interface.
The published context limits differ
The Bedrock model card lists 256K context, while the Nova product overview advertises up to 1M for Nova 2.5 Sonic. This directory does not combine those into one guaranteed limit. Confirm the limit of the selected endpoint and region before planning a long session.Amazon Nova 2.5 Sonic Bedrock model cardAmazon Nova current model overview
Specifications & access
| Detail | Value and conditions |
|---|---|
| Launch date | |
| Access | API |
| Model identifiers | amazon.nova-2-5-sonic |