Grok's Text to Speech API
Grok's Text to Speech API is a developer service that converts text into natural, expressive speech with support for 5 distinct voices, 20+ languages, and inline speech tags for fine-grained control over delivery and tone.
https://x.ai/api/voice?ref=producthunt#text-to-speech
Product Information
Updated:Mar 20, 2026
Grok's Text to Speech API Monthly Traffic Trends
Grok's Text to Speech API received 22.4m visits last month, demonstrating a Moderate Growth of 47%. Based on our analysis, this trend aligns with typical market dynamics in the AI tools sector.
View history trafficWhat is Grok's Text to Speech API
Released by xAI, Grok's Text to Speech API is a sophisticated text-to-voice solution that enables developers to generate high-quality, natural-sounding speech from text input. The API is designed to address the need for expressive audio generation across content creation, accessibility, and developer applications. It offers a simple integration process through a single POST request to the API endpoint, requiring just text input, voice selection, and language parameters to generate audio output.
Key Features of Grok's Text to Speech API
Grok's Text to Speech API is a powerful service that converts text into natural-sounding speech with 5 distinct voice options (Eve, Ara, Leo, Rex, Sal) and supports over 20 languages with automatic detection. The API offers fine-grained control through inline speech tags for pauses, laughter, whispers, and emphasis, while providing multiple output formats and sample rates. At $4.20 per 1 million characters, it offers competitive pricing for developers building voice applications.
Expressive Voice Options: Five distinct voice personalities with unique characteristics - Ara (warm, friendly), Eve (energetic, upbeat), Rex (confident, clear), Sal (smooth, balanced), and Leo (authoritative, strong)
Inline Speech Controls: Advanced control over speech delivery using inline tags for pauses, laughter, whispers, emphasis, and other expressive elements
Multilingual Support: Supports 20+ languages with automatic language detection and native-level proficiency in pronunciations and dialects
Flexible Audio Formats: Multiple output formats and sample rates from 8000 Hz to 48000 Hz, suitable for telephony, speech recognition, and professional audio applications
Use Cases of Grok's Text to Speech API
Content Creation: Generate natural voiceovers for videos, podcasts, and other digital content with expressive delivery and multiple voice options
Customer Support: Build interactive voice response systems and automated customer service agents with natural-sounding responses
Accessibility Solutions: Create audio versions of written content for visually impaired users or those who prefer audio consumption
Gaming and Entertainment: Generate dynamic voice content for game characters and interactive entertainment applications
Pros
Competitive pricing at $4.20 per 1M characters
Rich control over speech expression through inline tags
Integrated with Tesla's ecosystem and potential for broader applications
Cons
Limited to 100 concurrent requests per team
No dedicated feature for fine-grained control of speech prosody parameters
Relatively new service with evolving features and capabilities
How to Use Grok's Text to Speech API
Get API Key: Set up XAI_API_KEY in your environment variables or .env file by obtaining an API key from xAI
Install Dependencies: Install required libraries like 'requests' for Python or use fetch for JavaScript
Make API Request: Send a POST request to https://api.x.ai/v1/tts with your API key in Authorization header and Content-Type as application/json
Configure Request Body: Include 'text' parameter in JSON body with the text you want to convert to speech. Optionally specify voice from available options: eve, ara, rex, sal, leo
Handle Response: Process the audio response which will be returned in your specified format (wav is default). Save or stream the audio as needed
Add Speech Tags (Optional): Use inline speech tags to control expression like [cheerful], [whisper], or add pauses for more natural-sounding speech
Monitor Usage: Track your usage as pricing is $4.20 per 1 million characters with rate limits of 600 requests per minute or 10 requests per second
Grok's Text to Speech API FAQs
The Grok TTS API is xAI's developer service that converts text into spoken audio via a single API call. It supports 5 voices, 20 languages, expressive speech tags, and multiple audio codecs including MP3, WAV, PCM, and telephony formats. It is currently in Beta.
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Analytics of Grok's Text to Speech API Website
Grok's Text to Speech API Traffic & Rankings
22.4M
Monthly Visits
#2580
Global Rank
#13
Category Rank
Traffic Trends: Nov 2024-Oct 2025
Grok's Text to Speech API User Insights
00:02:55
Avg. Visit Duration
2.97
Pages Per Visit
27.98%
User Bounce Rate
Top Regions of Grok's Text to Speech API
US: 26.62%
KR: 9.73%
IN: 4.62%
JP: 3.15%
HK: 2.99%
Others: 52.89%
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