SpaceXSI, Elon Musk’s AI unit, announced Grok Voice 3.0 on Oct 15, 2026. The model powers its Voice Agent API for customer‑support and sales calls. Independent tester Artificial Analysis gave it an 86.9 score on its Speech‑to‑Speech Index, the highest among comparable systems.
How Grok Voice 3.0 compares
Artificial Analysis measures reasoning, task success and listener votes in blind head‑to‑head calls. OpenAI’s GPT‑Live‑1 (using the GPT‑6 Astra model) scored 83.2, and Google’s Gemini 3.8 Live scored 82.6. In the Full Duplex Bench test for natural pauses, Grok Voice 3.0 received a 97% rating. On a support‑call test with heavy accents (Tau‑Voice), the model reached the first audio 40% faster than the OpenAI runner.
Pricing and availability
Grok Voice 3.0 is already available through the Voice Agent API at 8 cents per minute ($4.80 per hour), the same price as the prior version. Developers using the grok‑voice‑latest alias are automatically switched to the new model without any code changes.
Why it matters
Businesses that run voice‑based support or sales bots can get more accurate, faster‑responding conversations without raising costs. The pricing stays unchanged, so existing users can upgrade immediately. For everyday drivers, the improved model means smoother interactions when they ask their Tesla or Starlink service for help.
