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You send text, the server generates the entire audio, and returns it in a single HTTP response. No streaming, no open connections — just one request and one response with the complete audio file. Best for batch or offline work like audiobooks, voiceovers, and podcasts, or any workflow where you can wait for the full file before playback.
For real-time playback or low-latency scenarios, use the Streaming API or WebSocket API. See the latency best practices for details.

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Code Examples

Node.js SDK

Use generate() from the @inworld/tts SDK — handles chunking, retries, and encoding automatically.

JavaScript

View our JavaScript implementation example

Python SDK

Use generate() from the inworld-tts SDK — handles chunking, retries, and encoding automatically.

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API Reference

Synthesize Speech

View the complete API specification

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Next Steps

Voice Cloning Best Practices

Learn best practices for producing high-quality voice clones.

Speech Generation Best Practices

Learn best practices for synthesizing high-quality speech.

API Examples

Explore Python and JavaScript code examples for TTS integration.