Grok Voice TTS 1.0

by xAISpeech synthesis

Convert text into spoken audio with a single API call. The API supports a rich set of expressive voices, inline speech tags for fine-grained delivery control, and output formats from high-fidelity MP3 to telephony-optimized μ-law.

Context: 15K tokens
Max output: 15,000 tokens
Released: 2026-05-15
Weights: Closed

Feed

xai/grok-voice-tts-1-0 · also seen as x-ai/grok-voice-tts-1.0

Specifications

Full facts as recorded, incl. what is unknown.

Released: 2026-05-15
Weights: Closed
Input: Text
Output: Audio
Context window: 15,000 max across endpoints
Max output: 15,000
Providers: 0 + 2 gateways, not counted as providers
Epoch Capabilities Index: not evaluated
Direct price range: no comparable direct price

More details

Last updated: 2026-07-31
Knowledge cutoff

Capabilities

Across all endpoints: supported if any endpoint supports it.

Tool calling
Parallel toolsunknown
Structured outputunknown
Reasoning
Image input
PDF input
Audio input
Audio outputunknown
Video input
Prompt cachingunknown
Web searchunknown
Computer useunknown
System messagesunknown
Assistant prefillunknown
Temperature
Streamingunknown
Attachments

Endpoints

One row per provider and variant; gateways are listed separately.

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Heads up: prices are indicative list rates scraped from provider pricing pages; verify with the provider before relying on them. Report incorrect data for this model