Catalog
xAI
Grok Voice
Realtime voice, TTS, and STT
Official specs
- Main purpose
- Spoken conversations, text-to-speech, and transcription
- Context window
- Not specified
- API pricing
- Voice agent from $0.05/min; TTS $15 / 1M characters; STT batch $0.10/hour, streaming $0.20/hour
- Access
- xAI Voice API, Grok apps
Capabilities
Key features
- Realtime conversations
- Text-to-speech
- Speech-to-text (batch and streaming)
Notes
- Official Voice API covers agent conversations, TTS, and STT with published rates.
Limitations
- Voice quality comparisons vs other vendors are not in the official model card.
Pricing and modalities from xAI model docs (August 18, 2026).
Vendor source