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SpaceXAI: Grok Voice TTS 1.0

Source description (English)

Grok Voice TTS 1.0 is a text-to-speech model from SpaceXAI. It converts text into spoken audio across 20+ languages with automatic language detection, and offers five built-in voices (Eve, Ara,...

View source on OpenRouter
Overview

Model specifications

Context
15,000 tokens
Maximum output
13,500 tokens
Architecture
text->speech
Tokenizer
Grok
Knowledge cutoff
Not provided
Moderated
No
OPENROUTER

Complete pricing

Synchronized OpenRouter rates. Token prices are shown per one million tokens.

Characters
$15
per million characters
API

Model configuration

Supported voices

eveararexsalleo
API

Quick start

Set OPENROUTER_API_KEY locally. Python requires requests; JavaScript runs in Node.js. Keep the key on the server.

Choose a supported voice. Replace YOUR_VOICE_ID if no voice is listed.

API documentation

curl --fail-with-body https://openrouter.ai/api/v1/audio/speech \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"x-ai/grok-voice-tts-1.0","input":"Hello!","voice":"eve","response_format":"mp3"}' \
  --output speech.mp3
Capabilities

Input → Output

Input
text
Output
speech
API

Supported API parameters

Available providers

1 Provider

Checked: September 16, 2026

Live providers on OpenRouter

Provider availability, latency, throughput and routing can change continuously. Open the source page for current operational data.

OpenRouter

xAI

Not provided
Context
15K
Maximum output
14K
x-ai

4 models

All models
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SpaceXAI: Grok 4.7

Grok 4.7 is SpaceXAI's flagship model for coding, agentic tasks, and knowledge work, succeeding Grok 4.6. It is particularly strong at long-running software engineering tasks, verifying its own work, and...

Context
500K
Input
text · image · file
Output
text
Input: $1.6Output: $4.8per 1M tokens
View model details →
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SpaceXAI: Grok 4.6

Grok 4.6 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM. It is succeeded by Grok 4.7.

Context
500K
Input
text · image · file
Output
text
Input: $2Output: $6per 1M tokens
View model details →
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xAI: Grok Imagine Image 2.0

Grok Imagine Image 2.0 is an image generation and editing model from xAI. It is suited for creating images from text prompts and editing images from references, with low and...

Context
66K
Input
text · image
Output
image
Image input: $0.01 per imageImage output: $0.04 per image
View model details →
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SpaceXAI: Grok STT 1.0

Grok STT is SpaceXAI's speech-to-text model, available via the REST /v1/stt endpoint. It supports transcription with word-level timestamps, optional speaker diarization, and multichannel audio.

Context
Not provided
Input
audio
Output
transcription
Audio seconds: $0.000028 per second
View model details →