SpaceXAI launches Grok 4.5, a fast, low-cost AI model trained with Cursor to build apps, draft slides, and tackle complex research.

Grok 4.5 is SpaceXAI's smartest model built for coding, agentic tasks, and knowledge work.

Elon Musk said the latest version of Grok is “faster, more token-efficient and lower cost” than one of Anthropic’s models.