service · inferred from evidence
Amazon Polly
The full name of the text-to-speech service, referenced in the context as the official documentation source.
- Polly long text: switch to the async task at 6000 characters
Synthesizing long-form audio with Polly: anything over 6000 characters (3000 billed) fails SynthesizeSpeech with TextLengthExceededException, so switch to StartSpeechSynthesisTask for documents and chapters.