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SpaceXSI releases Grok Voice 3.0 for AI phone agents

The speech model tops an independent voice AI ranking and keeps its predecessor’s price of eight cents a minute, the company says.

By Alexandre S. , 06:30 UTC

SpaceXSI, the AI company formerly called xAI, released Grok Voice 3.0 on Wednesday 14 October 2026, the company announced. It is a speech-to-speech model: it hears a caller and answers out loud in one step, which suits AI agents that take customer phone calls.

Retro-futurist illustration: a striped sunset over a grid horizon under a starry sky, with a satellite motif standing on the horizon.
Drawn by adtestbench from “Introducing Grok Voice 3.0”,

Artificial Analysis, an independent firm that ranks AI models, puts it first on its speech-to-speech index at 86.9 points. OpenAI’s GPT-Live-1 sits at 83.2 on the same index and Google’s Gemini 3.8 Live at 82.6, SiliconANGLE reports. OpenAI’s model still edges ahead on Tau-Voice, a measure of support calls full of strong accents and background noise.

The price stays at $0.08 a minute in the Voice Agent API, the same as Grok Voice 2.0, SpaceXSI says. The company says Starlink’s call centres use the model for about 20,000 calls a day. SpaceXSI says about 70 per cent of them need no human at all. Agents set to the latest version moved to the new model automatically.

For a business pricing an AI phone agent, an hour of Grok Voice 3.0 costs $4.80 in the API.

Sources

  1. SpaceXSI: Introducing Grok Voice 3.0. Checked
  2. SiliconANGLE: Grok Voice 3.0 from SpaceXSI outscores OpenAI and Google on speech-to-speech index. Checked
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Alexandre S.

Alexandre S. is a creative ad strategist and copywriter with ten years' experience in digital marketing across multiple channels.

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