Grok Voice Transcribe 2.0
xAI's speech-to-text model with diarization, timestamps, and smart turn detection for streaming or batch transcription.
Overview
Grok Voice Transcribe 2.0 is xAI's second-generation speech-to-text model, available via the Speech-to-Text API in batch ($0.10/hour) and streaming ($0.20/hour) modes. xAI says it ranks first for accuracy among 32 streaming models on the Artificial Analysis leaderboard and cuts multilingual word error rate on short phrases from 20.6% to 6.8% versus version 1.0, at the same price. It adds speaker diarization, word-level timestamps with confidence scores, up to 8 independent audio channels, key-term biasing, and automatic formatting of numbers, dates, and contact details.
This is a sourced directory entry. Features and capabilities are reported in the linked sources; this entry does not document independent Aymorphic testing.
Key features
- Batch and streaming transcription modes
- Speaker diarization and word-level timestamps with confidence scores at no extra cost
- Up to 8 independent audio channels per request
- Key-term biasing for up to 100 domain-specific terms
- Smart turn detection for voice agents
- Automatic language detection across multiple languages
Use cases
- Voice agent turn-taking and conversation transcription
- Multilingual call transcription with speaker separation
- Domain-specific transcription (e.g., medical, legal) via key-term biasing
- Real-time captioning and meeting transcription
Pricing
$0.10 per audio hour for batch transcription, $0.20 per audio hour for streaming; diarization and timestamps included at no extra cost.
Pricing reflects the source record and may change. Confirm current terms with the provider.
Dates and sources
- Released
- Not listed
- Record updated
- 22 Sept 2026
- Record last checked
- 22 Sept 2026