SpaceXAI Will Reportedly Release a Major New AI Model This Week

SpaceXAI is reportedly launching what the company purports to be a new frontier AI model as early as Wednesday. This one, according to the Information, is the first SpaceXAI model built jointly with the AI startup Cursor, which SpaceX is currently in the process of acquiring for $60 billion. A version of the Grok AI model that shipped in May did at least incorporate data from Cursor, according to Elon Musk. Last month, Elon Musk posted on X that his company’s latest unreleased model, Grok 4.5, was being beta tested behind the scenes at SpaceX and Tesla. He said its performance was comparable to some unspecified version of Claude Opus—Anthropic’s tier just below the controversially powerful Fable. Grok 4.5, based on our 1.5T V9 foundation model, with Cursor data added in supplemental training, is now in private beta at SpaceX & Tesla. Early evals show performance close to, perhaps exceeding Opus. RL is continuing to significantly improve the model, and the Grok Build… The Information’s report is more specific, saying the model is being compared internally to Claude Opus 4.8, along with OpenAI’s GPT 5.5—the latest GPT model to be released, although GPT-5.6 exists, and is expected to