# xAI Launches Grok Voice Think Fast 2.0 with Dramatic Transcription Improvements

> xAI has shipped a new version of its speech-to-speech system, Grok Voice Think Fast 2.0, and the numbers are aimed squarely at the parts of voice AI that still feel clunky. The company claims transcription accuracy improved by 1.5 to 2 times across 24 languages, with the gap widening to as much as 10 times in noisy environments where older systems tend to fall apart. Response latency is down too, with a fastest time-to-first-audio of 0.70 seconds. Under the hood, xAI says the model uses far less reasoning to get there, with median reasoning-token use falling to 0.4 times the previous baseline, which helps explain the pricing of 8 cents per minute of audio. It becomes the default grok-voice-latest on August 5. What makes this more than a spec bump is where xAI tested it. The company points to A and B testing on Starlink customer support, where it says the model raised sales conversion and let more calls resolve without a human. That is the real frontier for voice AI right now, not demos, but whether it can quietly carry live customer conversations at scale.

_Section: [Daily AI Updates](https://www.wortins.com/daily-ai) · Source: xAI · Published Saturday, August 1, 2026_

## Wortins' read

xAI has shipped a new version of its speech-to-speech system, Grok Voice Think Fast 2.0, and the numbers are aimed squarely at the parts of voice AI that still feel clunky. The company claims transcription accuracy improved by 1.5 to 2 times across 24 languages, with the gap widening to as much as 10 times in noisy environments where older systems tend to fall apart. Response latency is down too, with a fastest time-to-first-audio of 0.70 seconds. Under the hood, xAI says the model uses far less reasoning to get there, with median reasoning-token use falling to 0.4 times the previous baseline, which helps explain the pricing of 8 cents per minute of audio. It becomes the default grok-voice-latest on August 5. What makes this more than a spec bump is where xAI tested it. The company points to A and B testing on Starlink customer support, where it says the model raised sales conversion and let more calls resolve without a human. That is the real frontier for voice AI right now, not demos, but whether it can quietly carry live customer conversations at scale.

## Source

[Read the full story at xAI](https://x.ai/news/grok-voice-think-fast-2)

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