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xAI's Grok Voice Think Fast 2.0 Now Available on AI Gateway

·2026.07.29 09:00

Key point

xAI's new speech-to-speech model, Grok Voice Think Fast 2.0, has launched on AI Gateway.

Details

xAI's Grok Voice Think Fast 2.0 has been added to AI Gateway. This model is a speech-to-speech voice model that takes audio input and outputs audio, with significantly improved reasoning ability, transcription accuracy, and conversational ability compared to the previous model.

Key features include:

  • Parallel reasoning: Performs reasoning simultaneously with voice output, processing queries without latency.
  • Efficient token usage: Reduces reasoning token usage, allowing agents to execute tool calls even before finishing the first sentence.
  • Strong environmental adaptability: Maintains stable transcription performance even in real-world environments with background noise or telephone communication compression.

Developers can use the xai/grok-voice-think-fast-2.0 model through the AI SDK's realtime API, and for security, it is recommended to generate short-lived tokens on the server and pass them to the client.

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