Grok 4.6 narrows frontier AI performance gap

SpaceXAI has released Grok 4.6, an artificial intelligence model that has climbed into the top tier of independent performance rankings, intensifying competition with OpenAI and Anthropic. The model scored 61 on the Artificial Analysis Intelligence Index, matching OpenAI’s GPT-5.6 Sol at its highest tested setting. Grok 4.6 improved by five points over Grok 4.5, which had scored 56, and outperformed Anthropic’s Claude Opus 5 and Claude Fable 5 in several tasks requiring models to operate across several steps.

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