
Grok 4.5: Inside xAI’s V9 Architecture and the Quest for Token Efficiency
xAI has officially dropped Grok 4.5. Built on the V9 architecture, it challenges Claude Opus 4.8 and GPT-5.5 with one massive differentiator: a 4.2x reduction in token overhead. Here is our hands-on analysis of what makes it faster, cheaper, and cleaner for developers.
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