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The Narrowing Performance Gap: The Uncomfortable Numbers

The data from the Stanford HAI AI Index 2026 are unequivocal. At the end of 2023, U.S. models outperformed their Chinese counterparts by 17.5 percentage points on the MMLU benchmark (general knowledge), by 24.3 points on MATH (mathematical reasoning), and by 31.6 points on HumanEval (programming). One year later, at the end of 2024, these gaps had narrowed to 0.3, 1.6, and 3.7 points, respectively. This is not a gradual closing of the gap. It is near parity achieved in just twelve months.

In terms of producing notable models, the United States produced 50 top-tier models in 2025, compared to 30 for China—a real advantage, but one that does not reflect relative quality. Chinese models such as DeepSeek-V3.2, Alibaba’s Qwen3-Max, and Huawei’s offerings rival the best closed-source U.S. models on numerous benchmarks. Qwen even surpassed Meta’s Llama as the most-downloaded open-source model on Hugging Face in September 2025.

The U.S. advantage that remains decisive: chips

While the U.S. maintains a structural lead, it rests on a single major pillar: control of the global AI chip ecosystem. Nvidia designs the GPUs that power nearly all AI model training clusters worldwide. TSMC manufactures them in Taiwan. ASML in the Netherlands supplies the essential EUV lithography machines. This trio is out of China’s reach in the short term. The United States controls about 75% of global AI computing capacity, compared to 15% for China.

The best Chinese alternative—Huawei’s Ascend 910 chip—performs at about 60% of the Nvidia H100’s capabilities on basic tasks. New generations of Nvidia chips—the Blackwell series and the upcoming Rubin—are banned from export to China. According to former U.S. officials cited by the Foundation for Defense of Democracies, the best U.S. AI chips are currently five times more powerful than Huawei’s top offerings. By 2027, that gap could widen to seventeen times. This is the West’s most enduring advantage.


Trump’s decision in December 2025 to authorize Nvidia to sell H200 chips to approved Chinese buyers in exchange for a 25% surcharge will go down in history as one of the greatest strategic contradictions of the Trump era. On the one hand, export restrictions are imposed to strangle China. On the other, the very same tools are being sold to the designated enemy. Commercial logic overrides strategic logic. This is a structural problem of market democracy.

This content was created with the help of AI.

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