Grok 4.5 released: Musk’s first large model after merging into SpaceX, covering all terminals in one week
xAI released Grok 4.5 on July 16. It is officially called "SpaceXAI's most intelligent model" and is specially designed for coding, agentic tasks and knowledge work. Within a week after the release, it has launched all grok.com/X/iOS/Android, and entered office and development ecosystems such as Google Workspace, Outlook, Excel and GitHub Copilot.
On July 16, xAI released Grok 4.5. The official wording was rarely direct - "SpaceXAI's most intelligent model." This is a major upgrade to the Grok 4 series, which strengthens reasoning, tool calling and long-term multi-step task capabilities, and is accurately positioned for coding, agentic tasks and knowledge work**. What is even more noteworthy is its identity: This is the first large-scale model report card handed over in the name of SpaceXAI after xAI was acquired by SpaceX (in February).
Lightning spread within a week
Launching is just the beginning. Grok 4.5 demonstrated its staggering landing speed in the following week:
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