Grok 4.6

by xAI model

xAI's current lead model, which its documentation calls the "most intelligent and fastest model we've built", with a 500k-token context window and a stated knowledge cutoff of 1 February 2026. Worth knowing that grok-4.3 in the same family carries a larger 1M-token window — so on this lineup the newest model is not the longest-context one, which catches people out.

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