Grok Voice 3.0
xAI's speech-to-speech model in the Voice Agent API, priced at $0.08/min and scoring 86.9 on Artificial Analysis' Speech-to-Speech Index.
Overview
xAI announced Grok Voice 3.0 on October 14, 2026 as the new model behind its Voice Agent API; the grok-voice-latest alias now points to it. xAI reports sub-one-second latency, an 86.9 score on Artificial Analysis' Speech-to-Speech Index (versus 81.3 for Grok Voice 2.0) and 98.5% on Big Bench Audio. It already powers Grok Bot voice mode, hands-free requests in Tesla vehicles, and Starlink call centers that handle about 20,000 calls a day with roughly 70% resolved without a human.
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
- Speech-to-speech model served through the Voice Agent API
- 86.9 on Artificial Analysis Speech-to-Speech Index; 98.5% on Big Bench Audio
- 97.0% on Full Duplex Bench for pauses, turn-taking and interruptions
- 94.8% task success rate and 1070 Speech Agent Arena Elo in xAI's reported comparison
- grok-voice-latest alias upgraded automatically with no code changes
Use cases
- Voice agents for customer-support call centers
- In-vehicle hands-free assistants such as Tesla's voice requests
- Real-time conversational voice mode in consumer apps
Pricing
$0.08 per minute ($4.80 per hour) in the Voice Agent API, unchanged from Grok Voice 2.0.
Pricing reflects the source record and may change. Confirm current terms with the provider.
Dates and sources
- Released
- 14 Oct 2026
- Record updated
- 15 Oct 2026
- Record last checked
- 15 Oct 2026