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Stanford 423-Page AI Report Is Out: China-US Gap Now 2.7%—Is This Trustworthy?

AI Industry, China US AI, AI Report, Stanford —

On April 13, Stanford University Human-Centered AI Institute (HAI) released the “Artificial Intelligence Index Report 2026.” This 423-page report contains many conclusions, but the one that spread most widely on social media was:

The gap between Chinese and US top AI model performance has shrunk to just 2.7%.

2.7%. This number is too striking to ignore.

How Was This Number Calculated?

According to Stanford report, this figure was derived from benchmark tests measuring language, math, and coding capabilities. The top US models (mainly referring to Anthropic products) slightly lead Chinese companies like ByteDance by just 2.7%.

But I have to say, this calculation method itself is problematic.

Benchmark tests can only measure model performance on specific tasks—they cannot represent a model full capabilities. More importantly, model commercialization, ecosystem maturity, and developer toolchains simply cannot be expressed as a percentage.

The Truth Behind the 2.7%

Let us first acknowledge one thing: China AI progress is real. Models from DeepSeek, ByteDance, Alibaba and other companies have genuinely caught up with US top models on many tasks.

But is the gap really only 2.7%?

I think this claim is overly optimistic. AI competition is not just about model performance—it also includes:

  • Chip computing power: Access channels for high-end AI chips
  • Talent reserves: Quantity and quality of top AI researchers
  • Data accumulation: Breadth and depth of training data
  • Commercial ecosystem: Model deployment scenarios and monetization capabilities

On these dimensions, the gap between China and the US remains significant.

My Take

The data in Stanford report itself is credible, but media interpretations of the data are often oversimplified. The 2.7% figure has been overly amplified.

It is like saying two students exam scores differ by only 2.7 points, but it does not tell you that one is from a Beijing household while the other is from rural conditions; one has professor parents while the other has farmer parents; one attended international schools since childhood while the other went to a county high school.

AI competition is a comprehensive national strength contest—not something that can be summarized by a few benchmark numbers.

What do you think about this 2.7%?

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