Scoop: SpaceXAI launches new model, Grok 4.5
TL;DR
SpaceXAI is launching Grok 4.5 as its new flagship model and first major release since going public and acquiring Cursor. The positioning is clearly aimed at coding, agentic workflows and knowledge work, rather than a broad consumer chatbot push. Musk frames Grok 4.5 as faster, cheaper and more token-efficient than an Opus-class model; company benchmarks claim it beats Opus 4.8. Grok 4.5 is available in Grok Build, in Cursor across all plans and through the SpaceXAI console, but not yet in the EU.
Nauti's Take
This is a very Musk-style launch: big benchmark claims, a truth-seeking frame and a direct shot at Anthropic. The harder test will not happen on X, but inside pull requests, debugging sessions and long agent chains.
If Grok 4.5 stays reliable there and Cursor users feel less friction, it matters. Until then, part of the story is still PR wrapped around speed and cost promises.
Briefingshow
The important part is less the Grok brand and more the Cursor distribution. When a model lands directly inside the developer workflow, raw benchmark scores matter less than whether it solves real engineering tasks faster and cheaper. The EU gap also shows how regulation and rollout strategy still shape what users can actually access.
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