SpaceXSI Launches Grok Voice 3.0, Claiming Top Rank in Artificial Analysis Speech Index
SpaceXSI released Grok Voice 3.0, stating it ranks #1 on Artificial Analysis's Speech-to-Speech Index with sub-second latency and unchanged API pricing at $0.08/min.
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SpaceXSI launched Grok Voice 3.0 on October 14, 2026, a speech-to-speech model designed for voice agents. The company claims the model ranks #1 on Artificial Analysis's Speech-to-Speech Index with a score of 86.9 and features response latency under one second.
According to the official announcement, Grok Voice 3.0 scores 97% on Full Duplex Bench, which measures naturalness in handling pauses, turn-taking, and interruptions. It also achieves the highest accuracy score of 74% on ServiceNow's EVA-Bench for enterprise voice agents.
Pricing remains unchanged from its predecessor: Grok Voice 3.0 is available in the Voice Agent API at $0.08 per minute ($4.80 per hour). Agents using the grok-voice-latest endpoint have been automatically migrated to the new version.
SpaceXSI states that the model currently powers millions of daily conversations across Tesla vehicles and Starlink call centers. Approximately 70% of Starlink support calls are resolved by the model without human intervention.