AI Disruption

AI Disruption

Elon Musk's xAI Releases Fastest AI Model Yet

xAI's Grok-4 Fast: World's fastest AI model generates 75 tokens/sec. 10x speed boost for coding, Q&A, and real-time tasks. Tested and verified.

Meng Li's avatar
Meng Li
Sep 15, 2025
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We may not claim to be the strongest, but being the fastest is now confirmed!

Just now, xAI released Grok 4 Fast, with a generation speed of up to 75 tokens per second, 10 times faster than the standard version!

From the animation below, we can intuitively see the difference— When Grok 4 on the left is still saying "Let me think about it," Grok 4 Fast has already moved on to asking: "What's the next question?"

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Is speed truly the ultimate advantage in the AI world?

Let's take a look at Grok 4 Fast's actual performance together.

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