Grok Voice Transcribe 2.0
Grok Voice Transcribe 2.0 is SpaceXAI's current speech-to-text model for batch files and live streaming transcription.
Speech RecognitionAudio TranscriptionStreaming ASRDiarizationMultichannelSpaceXAI
SpaceXAI REST /v1/stt and WebSocket wss://api.x.ai/v1/stt in us-east-1
REST $0.10/hour; streaming $0.20/hour
Commercial🚀Function Overview
Grok Voice Transcribe 2.0 supports batch and live transcription with timestamps, language formatting, diarization, multichannel audio, keyterms, and Smart Turn.
Key Features
- Official model ID grok-voice-transcribe-2.0
- REST file or URL transcription at $0.10 per hour
- WebSocket streaming transcription at $0.20 per hour
- 12 documented audio formats and files up to 500 MB
- Word-level timestamps, detected language, speaker diarization, and up to eight interleaved channels
- Keyterm biasing, filler-word control, interim results, endpointing, voice-activity threshold, and Smart Turn
- The live model and capability pages name 2.0 as the default, while the September 17 release note still names 1.0; pin 2.0 explicitly
Use Cases
- •Meeting and interview transcription
- •Call-center multichannel transcription
- •Live captions and dictation
- •Speaker-labelled recordings
- •Domain vocabulary using keyterms
⚙️Input Parameters
model
stringPass grok-voice-transcribe-2.0 explicitly because first-party default documentation conflicts.
file
fileAudio file for REST transcription; mutually exclusive with url.
url
stringServer-downloadable audio URL for REST transcription; mutually exclusive with file.
language
stringOptional language code that enables inverse text normalization for supported languages.
keyterm
stringRepeatable domain term used to bias transcription.
💡Usage Examples
Example 1
Input Parameters
{
"model": "grok-voice-transcribe-2.0",
"file": "meeting.mp3",
"language": "en",
"keyterm": "GetLLMs"
}Output Results
A transcript with detected language, audio duration, and word-level timestamps; speaker or channel fields appear when enabled.
Quick Actions
Technical Specifications
- Hardware Type
- SpaceXAI REST /v1/stt and WebSocket wss://api.x.ai/v1/stt in us-east-1
- Commercial Use
- Supported
- Pricing
- REST $0.10/hour; streaming $0.20/hour