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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\u2019s 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\u2014Anthropic\u2019s 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\u2026 \u2014 Elon Musk (@elonmusk) June 28, 2026 \u00a0 The Information\u2019s report is more specific, saying the model is being compared internally to Claude Opus 4.8, along with OpenAI\u2019s GPT 5.5\u2014the latest GPT model to be released, although GPT-5.6 exists, and is expected to be released soon.<\/p>\n
Cursor founder Michael Truell\u00a0made an announcement last month of a model Cursor was working on that would supposedly compete with Frontier models from Anthropic and OpenAI. He referred to this as the \u201cnext phase of the company\u201d without directly stating the model was a project directly linked to SpaceXAI at the time.<\/p>\n