Woofun AI reports that Elon Musk has disclosed the commencement of internal private testing for Grok 4.5 within SpaceX and Tesla operations. The model, built upon a 1.5 trillion parameter V9 base and refined using Cursor data, demonstrates early evaluation metrics approaching or exceeding those of Opus. Continued reinforcement learning enhancements and daily advancements in the Grok Build toolchain support this progress. Musk further stated that SpaceX and associated teams intend to release a fully trained model from scratch on a monthly basis throughout the year to maintain high-speed iteration.