Grok's New Voice APIs: Speech Recognition and Synthesis at Enterprise Scale
xAI has released two standalone voice APIs - Speech-to-Text (STT) and Text-to-Speech (TTS) - built on the same stack powering Grok Voice, Tesla in-vehicle assistants, and Starlink customer support. The move puts xAI in direct competition with ElevenLabs, Deepgram, and AssemblyAI, three companies that have owned the enterprise voice API market for years. The interesting question isn’t whether Grok’s voice tech is good. It clearly is - Tesla wouldn’t ship it otherwise. The question is whether xAI’s bundle (voice + reasoning + frontier models under one roof) is worth switching for. ...