Musk says Grok 4.5 is coming tomorrow, matching Claude Opus level

SpaceX founder Elon Musk confirmed that the Grok 4.5 AI model will be available to the public tomorrow (local time July 8 or 9). It's built on a 1.5T parameter V9 base model and includes training data from Cursor.

Musk says Grok 4.5 matches Anthropic's Claude Opus level, but is faster, more efficient with tokens, and cheaper. This release marks another big step in open-source AI.

Opening Grok 4.5 to everyone could shake up the top AI models and help lower costs. Users can expect better performance and efficiency.