Stream low-latency speech from AI agents using Kokoro TTS on Amazon SageMaker AI
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Voice agents often wait for an agent's full response before starting speech synthesis, adding latency users feel directly. This post shows how to stream each sentence to a Kokoro-82M text-to-speech model on Amazon SageMaker AI as the agent produces it, and how to get that audio back to a browser over Server-Sent Events or a unified binary transport.
A customer asks an AI voice agent a question and waits. The agent already has an answer, it’s midway through generating a long, multi-paragraph response, but the customer hears nothing for five seconds. By the time an answer arrives, the customer is frustrated, confused, and no longer paying attention. Text-to-speech integrations create exactly that gap. A one-sentence response might generate in 600 milliseconds, but the full response takes five seconds, and the integration waits for all of it…
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