Grok Voice API is xAI's developer product for building live spoken agents with bidirectional audio and text; it is not a separate Grok chat app. Grok Voice 3.0 is the current speech-to-speech model covered by this review, while the API surface also documents text-to-speech, speech-to-text and custom-voice workflows. Compare its integration path, interruption handling, tool use and representative task cost with ElevenLabs Conversational AI and Murf Studio. xAI's October 14 launch announcement and Voice API page listed USD 0.08 per minute at the 2026-10-17 review date. This is dated public pricing evidence, not a guaranteed account checkout. This directory has not reproduced latency, benchmark scores, safety behavior or actual billing in an account. Verify current model routing, regional terms, data handling and billable minutes before production use.
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