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Introducing Amazon Polly Bidirectional Streaming: Real-time speech synthesis for conversational AI

Amazon just made LLM voice responses 40% faster. Here's why that matters for your AI product.

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The KeyNews take

Why it matters

Amazon Polly's new bidirectional streaming API removes a critical bottleneck in conversational AI—users no longer wait for full text generation before audio synthesis begins. This is a direct infrastructure play for companies building voice-enabled LLM products.

The key facts

5 to know
  1. Amazon Polly launches Bidirectional Streaming API for real-time TTS

  2. Enables simultaneous text input and audio output synthesis

  3. Built specifically for LLM-powered conversational AI applications

  4. Reduces latency in voice-based AI interactions

  5. AWS machine learning product announcement, March 26 2026

Go to the source

AWS Machine Learning Blogaws.amazon.com

Publisher excerpt: Today, we’re excited to announce the new Bidirectional Streaming API for Amazon Polly, enabling streamlined real-time text-to-speech (TTS) synthesis where you can start sending text and receiving audio simultaneously. This new API is built for conversational AI applications that generate text or…
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