Grok 4.5 Beta: Tesla & SpaceX Test New AI Model

xAI's Grok 4.5 is now in private beta testing at SpaceX and Tesla. This new model is built on a 1.5-trillion-parameter foundation architecture. It was trained using data from the AI coding platform Cursor. What's interesting is that Grok 4.5 runs on xAI's proprietary V9 foundation architecture. The training incorporates data from Cursor, whose parent company, Anysphere, was acquired by SpaceX for $60 billion. SpaceX has reassigned engineers from Starlink and Starship, along with Cursor staff, to work on the Grok model family. Internal claims suggest Grok 4.5 performs closely to Anthropic's Claude Opus, known for reasoning and long-context tasks. xAI reportedly plans to release a new AI model every month for the rest of 2026. This aggressive schedule requires significant computing power and engineering. The bottom line for listeners, especially Tesla owners, is that Grok is increasingly integrated into Tesla's software. Improvements to Grok could enhance in-car voice interactions, the Tesla app, and future Autopilot and FSD development.