> ## Documentation Index
> Fetch the complete documentation index at: https://developers.telnyx.com/llms.txt
> Use this file to discover all available pages before exploring further.

# TTS llms.txt

> Machine-readable documentation index for TTS (Voice) — guide pages and API endpoints for AI agents and LLMs

# Telnyx Voice: TTS — Documentation Index

> TTS documentation within the Voice section of the Telnyx developer docs ([https://developers.telnyx.com](https://developers.telnyx.com)).
> Root index: [https://developers.telnyx.com/llms.txt](https://developers.telnyx.com/llms.txt) · Voice index: [https://developers.telnyx.com/development/llms/voice-llms-txt.md](https://developers.telnyx.com/development/llms/voice-llms-txt.md) · Full content for this subsection: [https://developers.telnyx.com/development/llms/voice-tts-llms-full-txt.md](https://developers.telnyx.com/development/llms/voice-tts-llms-full-txt.md)

##

* [Overview](https://developers.telnyx.com/docs/voice/tts/overview.md): Synthesize natural speech from text via WebSocket streaming, REST API, or in-call playback.

## WebSocket Streaming

* [Lifecycle](https://developers.telnyx.com/docs/voice/tts/websocket-streaming.md): How the Telnyx Text-to-Speech WebSocket endpoint works for real-time streaming, including connection, text messages, audio frames, and shutdown signals.
* [Configuration](https://developers.telnyx.com/docs/voice/tts/websocket-streaming/configuration.md): Configuration surfaces for Telnyx Text-to-Speech WebSocket streaming, including connection-time query parameters and per-message voice settings.
* [Messages](https://developers.telnyx.com/docs/voice/tts/websocket-streaming/messages.md): Reference for WebSocket frame types — client-to-server text messages and server-to-client audio frames — used in the Telnyx Text-to-Speech streaming API.
* [Errors](https://developers.telnyx.com/docs/voice/tts/websocket-streaming/errors.md): WebSocket TTS error codes and troubleshooting tips for handshake failures, authentication issues, and runtime streaming errors on the Telnyx platform.
* [Examples](https://developers.telnyx.com/docs/voice/tts/websocket-streaming/examples.md): Working Python and JavaScript code samples showing how to stream text-to-speech audio over the Telnyx WebSocket TTS endpoint with basic and advanced setups.

## REST API

* [Overview](https://developers.telnyx.com/docs/voice/tts/rest-api.md): Single-request text-to-speech with HTTP chunked streaming — start playing before synthesis finishes.
* [Request](https://developers.telnyx.com/docs/voice/tts/rest-api/request.md): REST TTS request body fields — text, voice, output type, and provider-specific settings.
* [Response](https://developers.telnyx.com/docs/voice/tts/rest-api/response.md): REST TTS response formats — streaming audio, base64, and async retrieval.
* [Examples](https://developers.telnyx.com/docs/voice/tts/rest-api/examples.md): Code examples for the Telnyx Text-to-Speech REST API showing OpenAI SDK compatibility, synchronous and streaming playback, and async retrieval.
* [API Reference](https://developers.telnyx.com/docs/voice/tts/rest-api/api-reference.md): OpenAPI reference for the Telnyx Text-to-Speech REST endpoints, including the generate speech endpoint and request/response schemas for all parameters.

## Providers

* [Overview](https://developers.telnyx.com/docs/voice/tts/providers/telnyx.md): Overview of Telnyx native text-to-speech models, comparing latency, quality, language coverage, and expressive control for the TTS REST API.
* [Natural](https://developers.telnyx.com/docs/voice/tts/providers/telnyx/natural.md): Telnyx Natural is a low-latency English text-to-speech model backed by Rime Mist, designed for real-time voice agents and conversational applications.
* [NaturalHD](https://developers.telnyx.com/docs/voice/tts/providers/telnyx/naturalhd.md): Telnyx NaturalHD is a high-fidelity multilingual text-to-speech model backed by Rime Arcana, offering studio-quality voices for premium voice applications.
* [KokoroTTS](https://developers.telnyx.com/docs/voice/tts/providers/telnyx/kokoro.md): Telnyx KokoroTTS is a lightweight, lowest-latency text-to-speech model ideal for real-time voice agents and interactive applications on the Telnyx TTS API.
* [Qwen3TTS](https://developers.telnyx.com/docs/voice/tts/providers/telnyx/qwen3.md): Telnyx Qwen3TTS provides high-quality voice cloning with native support for 11 languages, ideal for multilingual voice agents on the Telnyx TTS API.
* [Ultra](https://developers.telnyx.com/docs/voice/tts/providers/telnyx/ultra.md): Telnyx Ultra text-to-speech delivers sub-100ms latency across 44 languages, available exclusively through the TTS REST API for ultra-fast voice synthesis.
* [Grok](https://developers.telnyx.com/docs/voice/tts/providers/telnyx/grok.md): xAI Grok voices for expressive, multilingual text-to-speech in Telnyx Voice AI Assistants.
* [Bayan](https://developers.telnyx.com/docs/voice/tts/providers/telnyx/bayan.md): Telnyx Bayan is an Arabic text-to-speech model covering 13 dialects plus English, ideal for Arabic-language voice agents on the Telnyx TTS API.
* [Sukhan](https://developers.telnyx.com/docs/voice/tts/providers/telnyx/sukhan.md): Telnyx Sukhan is an Urdu text-to-speech model with a curated set of 14 voices, ideal for Urdu-language voice agents on the Telnyx TTS API.
* [Rime](https://developers.telnyx.com/docs/voice/tts/providers/rime.md): Configure Rime as a text-to-speech provider on Telnyx with Coda and ArcanaV3 models, voice format strings, speed control, and language coverage.
* [Minimax](https://developers.telnyx.com/docs/voice/tts/providers/minimax.md): Configure Minimax as a text-to-speech provider on Telnyx with expressive voices and fine-grained speed, volume, and pitch controls per request.
* [Resemble](https://developers.telnyx.com/docs/voice/tts/providers/resemble.md): Configure Resemble AI as a text-to-speech provider on Telnyx using your own Resemble API key, with voice cloning and custom voice support.
* [Inworld](https://developers.telnyx.com/docs/voice/tts/providers/inworld.md): Configure Inworld as a text-to-speech provider on Telnyx with Mini low-latency, Max high-quality, and TTS-2 latest-generation models, voice format strings, and language support.
* [xAI](https://developers.telnyx.com/docs/voice/tts/providers/xai.md): xAI Grok TTS provider — expressive multilingual voices with speech tags and auto language detection.
* [Fish Audio](https://developers.telnyx.com/docs/voice/tts/providers/fishaudio.md): Configure Fish Audio as a text-to-speech provider on Telnyx with curated voices, cross-lingual synthesis, and multiple audio formats and sample rates.
* [AWS Polly](https://developers.telnyx.com/docs/voice/tts/providers/aws.md): Configure AWS Polly as a text-to-speech provider on Telnyx, with neural, generative, and long-form synthesis engines and voice format strings.
* [SSML Tags](https://developers.telnyx.com/docs/voice/tts/providers/aws/ssml-tags.md): Programmable voice with SSML tags from Telnyx - perfect for your
* [Azure](https://developers.telnyx.com/docs/voice/tts/providers/azure.md): Configure Microsoft Azure Speech as a text-to-speech provider on Telnyx, with multilingual neural voices, voice format strings, and SSML support.
* [ElevenLabs](https://developers.telnyx.com/docs/voice/tts/providers/elevenlabs.md): Configure ElevenLabs as a text-to-speech provider on Telnyx using your own ElevenLabs API key, with voice cloning and premium voice selection.

## Other

* [Pronunciation Dictionaries](https://developers.telnyx.com/docs/voice/tts/pronunciation-dictionaries.md): Control how specific words are spoken during TTS synthesis with custom pronunciation dictionaries.
* [In-Call Playback](https://developers.telnyx.com/docs/voice/tts/in-call-playback.md): Play Telnyx text-to-speech audio during live voice calls using the Programmable Voice API or TeXML, with options for streaming and per-call voice selection.
* [Pricing](https://developers.telnyx.com/docs/voice/tts/rest-api/pricing.md): Pricing for the Telnyx Text-to-Speech REST API, including per-character rates by engine, voice tier, and supported provider model.

## API Reference (TTS)

### Text To Speech Commands

* [List available voices](https://developers.telnyx.com/api-reference/text-to-speech-commands/list-available-voices.md): Retrieve a list of available voices from one or all TTS providers. When `provider` is specified, returns voices for that provider only. Otherwise, returns voic…