Grok 4.5 Is Here: How SpaceXAI Is Undercutting Claude and GPT on Price Without Giving Up on Performance
Elon Musk's AI operation just made its first major release since folding xAI into SpaceX and the story isn't about who built the biggest model. It's about who built the cheapest one that still holds its own. On July 8, 2026, SpaceXAI launched Grok 4.5, calling it the company's most intelligent model to date and its strongest built specifically for coding, agentic tasks and knowledge work. It's also notable for being the first model SpaceXAI built jointly with Cursor, the AI coding platform SpaceX agreed to acquire for a reported $60 billion in an all-stock deal. Built On Real Developer Data, Not Just Code Repositories Where Grok 4.5 diverges from a typical model release is in how it was trained. Rather than leaning purely on static code repositories, SpaceXAI and Cursor trained the model on trillions of tokens of actual developer-agent interaction data: real bugs, real debugging sessions, and real architecture decisions rather than just finished code. The idea is th...