Chinese AI models are largely open source not for ideological reasons, but as a pragmatic branding strategy. Open-sourcing their models was necessary to build trust and credibility with Western developers who might otherwise be skeptical of closed, proprietary Chinese technology.

Blocked from accessing the most advanced chips and closed models from companies like OpenAI, China is strategically championing open-source AI. This could create a global dynamic where the US owns the 'Apple' (closed, high-end) of AI, while China builds the 'Android' (open, widespread) ecosystem.

Unlike the largely closed-source US market, DeepSeek's open-source models spurred intense competition among Chinese tech giants and startups to release their own open offerings. This has made Chinese open-source models the most used globally by token count, creating a distinct competitive dynamic.

Counterintuitively, China leads in open-source AI models as a deliberate strategy. This approach allows them to attract global developer talent to accelerate their progress. It also serves to commoditize software, which complements their national strength in hardware manufacturing, a classic competitive tactic.

Intense competition in China's AI market has led to a prevalence of open-source models. This creates a dynamic where competitors share best practices, allowing all models to learn from one another. This ecosystem structure is capable of innovating far faster than a closed, proprietary system.

Unable to compete globally on inference-as-a-service due to US chip sanctions, China has pivoted to releasing top-tier open-source models. This serves as a powerful soft power play, appealing to other nations and building a technological sphere of influence independent of the US.

The performance gap between US and Chinese AI has closed, establishing them as co-leaders. A key divergence is China's embrace of open models, while major US players have shifted to closed, proprietary systems. This creates a significant geopolitical and technological divide in the global AI ecosystem.

The AI competition is not a simple two-horse race between the US and China. It's a complex 2x2 matrix: US vs. China and Open Source vs. Closed Source. China is aggressively pursuing an open-source strategy, creating a new competitive dynamic that complicates the landscape and challenges the dominance of proprietary US labs.

While the U.S. leads in closed, proprietary AI models like OpenAI's, Chinese companies now dominate the leaderboards for open-source models. Because they are cheaper and easier to deploy, these Chinese models are seeing rapid global uptake, challenging the U.S.'s perceived lead in AI through wider diffusion and application.