Elon Musk announced Grok 4.5, xAI's latest AI model, entered private beta testing at SpaceX and Tesla. Grok 4.5 features a new 1.5 trillion-parameter foundation. Supplemental training from the AI coding assistant Cursor aims to boost its software development capabilities.
Internal testing at SpaceX and Tesla will provide crucial feedback before a wider public release. Musk noted early evaluations show Grok 4.5's performance is competitive with, and potentially exceeds, leading models like Anthropic's Claude Opus. Musk also signaled an aggressive development cycle. Plans include releasing new AI models monthly for the rest of the year.