xAI Rebrands as SpaceXAI, Launches New Grok 4.5 Model

xAI and Grok logos on Feb. 16, 2025. Dado Ruvic/ReutersxAI has officially rebranded itself as SpaceXAI and has a new logo, the company recently announced on X.The change was made five months after Elon Musk’s rocket company, SpaceX, acquired his AI company, xAI, with the goal of launching a large number of satellites to operate as artificial intelligence (AI) data centers in space.In May, Musk wrote on X that xAI would be dissolved as a separate company and would be called “SpaceXAI,” serving as SpaceX’s AI division.The acquisition brought Musk one step closer to putting into action his belief that AI innovations need to be space-based to help spur progress, as AI requires the computing power of data centers that need immense amounts of power and cooling.“The only logical solution therefore is to transport these resource-intensive efforts to a location with vast power and space. I mean, space is called ‘space’ for a reason,” Musk said in a February news release.Last month, SpaceX went public under the SPCX ticker on the Nasdaq and raised $75 billion by selling over 555 million shares at $135 apiece.SpaceXAI Launches Grok 4.5On July 8, SpaceXAI launched Grok 4.5, the latest edition of its chatbot, which the company said is built to excel at coding and agentic tasks. According to a press release, the chatbot model was trained alongside Cursor, the AI coding startup that SpaceX is buying for $60 billion this year.“Grok 4.5 is incredibly capable at coding, from challenging Rust and C/C++ tasks to end-to-end app building from prompt to production,” SpaceXAI said in the press release. “[It’s] highly proficient at creating well-designed, end-to-end functional apps even with minimal specification.”SpaceXAI said this model was trained on datasets with knowledge of coding, science, engineering, and math, and across tens of thousands of NVIDIA GB300 GPUs.The company said the model can build complex diagrams and design intuitive slide content in PowerPoint.The new model is available in Grok Build, in Cursor, and from the SpaceXAI console and is priced at $2 per million input tokens and $6 per million output tokens.For context, Anthropic’s chatbot Claude priced its latest Fable 5 model at $10 per million input tokens and $50 per million output tokens, though most of its older models offer much cheaper rates.SpaceXAI said that Grok 4.5 has about twice the token efficiency of comparable models, with the ability to solve tasks in less than half the steps.“Overall, Grok 4.5 delivers the highest intelligence per unit of time and cost,” the company said.Grok is not available in the European Union until later this month.The Associated Press contributed to this report.