# Introducing Grok Voice Think Fast 2.0

xAI announced Grok Voice Think Fast 2.0, a speech-to-speech voice model with improved transcription accuracy and efficiency, priced at $0.08 per minute.

- Grok Voice Think Fast 2.0 shows 1.5–2.0× improvement in transcription accuracy over Deepgram Nova 3 and ElevenLabs Scribe v2, and 1.4× over its predecessor.
- The model reasons while speaking, enabling tool calls to execute before the agent finishes its first sentence.
- It is trained to speak in shorter sentences, ask one question at a time, and avoid fluff, improving conversational flow.
- On August 5, 2026, grok-voice-latest will switch to this model; users can pin the old version to stay on it.
- Pricing is $0.08 per minute of audio.

## Why it matters

Developers and businesses using xAI's voice models will get better accuracy and efficiency without prompt changes, potentially improving conversion and support metrics.

## Sources

- [xAI: Introducing Grok Voice Think Fast 2.0](https://x.ai/news/grok-voice-think-fast-2)

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Summarized by dstilled on 2026-07-29. https://dstilled.ai/story/b5441ad2-42e3-4050-ac90-c2be6fa4c706