Grok 4.5 Beta: Musk Tests New AI at Tesla & SpaceX

Elon Musk has announced that Grok 4.5 is now in private beta testing. The new AI model is being trialed at his companies, SpaceX and Tesla. Here's the thing: Grok 4.5 is built on a 1.5-trillion-parameter V9 foundation model and used Cursor data in its training. Musk claims early evaluations show its performance approaches or potentially surpasses Opus, a leading AI model from Anthropic. What's interesting is that reinforcement learning is continuously improving the model. Musk stated that SpaceX plans to release entirely new models trained from scratch every month this year, a rapid development pace. The bottom line: This move highlights Musk's aggressive push in AI, potentially integrating a stronger Grok across his various ventures.