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.

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 knowAmazon Polly launches Bidirectional Streaming API for real-time TTS
Enables simultaneous text input and audio output synthesis
Built specifically for LLM-powered conversational AI applications
Reduces latency in voice-based AI interactions
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…