SpaceXAI, the AI division formed after xAI’s integration into SpaceX, has added its Grok voice models to the Vercel AI Gateway, giving developers access to a full voice stack including realtime voice, text-to-speech, and speech-to-text through a single API layer. The announcement landed on June 29, 2026, with Vercel posting the update to its changelog. Three models shipped: the realtime voice model xai/grok-voice-think-fast-1.0, xai/grok-tts for text-to-speech, and xai/grok-stt for speech-to-text. Bidirectional WebSocket streaming is baked in. No separate xAI API keys are needed when routing through the Vercel AI Gateway, and the integration runs on AI SDK 7. Earlier Grok models covering text, image, and video processing were already available on the Gateway before this voice expansion. xAI completed its integration into SpaceX in May 2026, resulting in the SpaceXAI branding. The Vercel AI Gateway emerged in alpha in May 2025. Budget controls built into the Gateway enforce hard budget limits at the gateway layer.