Grok's Text to Speech API

xAI just dropped their Text to Speech API and honestly, it's about time. Elon Musk's AI company has been building Grok with the kind of urgency that only someone who wants to outmaneuver Google and OpenAI can muster—and now they're opening up the voice layer. Grok's TTS API supports five distinct voices, multiple audio formats, and it's built for both telephony and web applications. You get multilingual support over WebSocket with native tool calling and MCP integration, which means this isn't some basic text-to-speech wrapper—it's built for developers who want to actually build voice agents that can do stuff, not just talk.

The people behind this: Michael Vavilov, Nayan Surya, Akshay Kumar, and Bade Rajasekhar. Not sure of their full backgrounds, but they're shipping at xAI's pace, which is "move fast and break things" energy. This sits alongside Grok Voice—which you can try right now with characters like Ara, Eve, Leo, and Rex—and it's all connected to the bigger Grok ecosystem that's been making waves since xAI launched Colossus, their massive training cluster.

If you're building voice agents, customer support bots, or anything that needs to speak to humans, this is worth a spin. The API is live on x.ai/api/voice and there's a free playground to test it out. Voice is the next interface, and xAI just made it accessible to developers.