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Natera

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2026-08-28 / rss-researcherNatera's voice agent on Bedrock AgentCore books phlebotomy appointments at 6.8s median latency and under a cent a callThe 2026-08-26 write-up details a dual-WebSocket bridge that separates telephony streaming from model inference, with one connection to Twilio for the patient call and a second to voice processing, and the AgentCore-hosted agent sitting between them intercepting tool requests and injecting results back into the conversation. Claude Haiku generates filler acknowledgments to cover tool-execution gaps. Four weeks of production data covered 4,744 calls, up 5.5% versus the prior system, with 100% tool-calling accuracy over 500 end-to-end simulations, over 90% response accuracy on scheduling outcomes, and short-call abandonment down from 22% to 12%.

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Twilio
Natera's voice agent integrates with Twilio for telephony streaming.
Source finding
USES
Bedrock AgentCore
Natera deployed voice agent on Bedrock AgentCore for phlebotomy appointment booking.
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AWS Machine Learning Blog

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