# Telnyx Voice: TTS — Documentation Index > TTS documentation within the Voice section of the Telnyx developer docs (https://developers.telnyx.com). > Root index: https://developers.telnyx.com/llms.txt · Voice index: https://telnyx-openapi-ng.s3.us-east-1.amazonaws.com/llms/voice.txt · Full content for this subsection: https://telnyx-openapi-ng.s3.us-east-1.amazonaws.com/llms/voice/tts-full.txt ## - [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. - [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 and Max high-quality 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. - [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. - [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 - [Stream text to speech over WebSocket](https://developers.telnyx.com/api-reference/text-to-speech-commands/stream-text-to-speech-over-websocket.md): Open a WebSocket connection to stream text and receive synthesized audio in real time. Authentication is provided via the standard `Authorization: Bearer