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Kimi K3 Leads 2 Trillion Parameter Race as Moonshot Invites Musk

Kimi K3 Leads 2 Trillion Parameter Race as Moonshot Invites Musk

September 13, 2026
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The clash between Chinese Weibo and English social media platforms has brought the intense competition in large model parameter scaling into sharp focus. On July 20, Moonshot AI launched its new open-source model, Kimi K3, which quickly rose to the top of global rankings and captured widespread attention. Just days prior, Elon Musk’s comments had escalated this competition from a numbers game into a public verbal confrontation.

On the morning of July 18, Musk took to social media to claim that his new model, boasting 2 trillion parameters, outperformed the current 1.5-trillion-parameter version across all metrics. He announced that preliminary training would be completed the following week, potentially surpassing Kimi. Musk also asserted that the new model’s reasoning speed and Token efficiency would rival those of the existing 1.5T model, Grok4.5. This statement effectively raised the benchmark for parameter scale to over 2 trillion, just as Kimi K3 was making headlines at the top of the charts.

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Moonshot AI responded with directness and sharpness. It publicly addressed @Musk on Weibo with a single, concise sentence: “Welcome to the 2-trillion+ club.” This seemingly casual invitation leveraged Kimi K3’s top ranking to position its open-source achievement as the entry threshold for this exclusive group.

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