xAI Launches Standalone Grok Speech-to-Text and Text-to-Speech APIs for Enterprise Voice Developers
Voice-native AI agents have had a tooling problem: the best transcription and synthesis options were scattered across ElevenLabs, Deepgram, AssemblyAI, and Google’s various APIs, none of them integrated into a single provider that also offers frontier model inference. As of April 17, 2026, xAI has changed that. Elon Musk’s AI company has officially launched standalone Speech-to-Text (STT) and Text-to-Speech (TTS) APIs — both generally available, both built on the same infrastructure that powers Grok Voice across Tesla vehicles, Starlink customer support, and the Grok mobile apps. For developers building voice agents, this matters. ...