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Since 2022, America has had a solid lead in artificial intelligence thanks to advanced models from high-flying companies like OpenAI, Google DeepMind, Anthropic, and xAI. A growing number of experts, however, worry that the US is starting to fall behind when it comes to minting open-weight AI models that can be downloaded, adapted, and run locally.
Open models from Chinese companies like Kimi, Z.ai, Alibaba, and DeepSeek are now rapidly gaining popularity among researchers and engineers worldwide, leaving the US as a laggard in an increasingly vital area of AI innovation. “The US needs open models to cement its lead at every level of the AI stack,” Nathan Lambert, founder of the ATOM (American Truly Open Models) Project, tells WIRED.
The most advanced models from US companies can only be accessed through a chatbot interface or by sending queries to companies’ servers through an application programming interface, or API. OpenAI and Google have released open-weight models, but they are far less capable than the Chinese offerings, which are better suited to modification and offer more developer support. Chinese model makers also benefit from open-sourcing their models, since the best ideas and tweaks from outside researchers can be folded into future releases.
Lambert, who is also a researcher at the Allen Institute for AI (Ai2), a nonprofit in Seattle, Washington, founded the ATOM project to highlight the risks associated with the US falling behind in open source. The country needs cutting-edge open models, he says, in part because relying on foreign ones could prove problematic if those models were suddenly discontinued or made closed-source.
Open models also foster innovation and experimentation between startups and researchers, Lambert says. Beyond that, companies with sensitive information need open models that they can run on their own hardware. “Open models are a fundamental piece of AI research, diffusion, and innovation, and the US should play an active role leading rather than following other contributors,” Lambert says.
The ATOM Project, launched on July 4, presents a compelling argument for more openness and shows how Chinese open-weight models have overtaken US ones in recent years.
Ironically, the open source AI movement was kicked off by the US social media giant Meta, when it released Llama, an open-weight frontier model, in July 2023. Back then, Meta saw Llama as a way to break into the AI race. Very quickly, its new model became popular among researchers and entrepreneurs.
Since then, Meta and other US AI companies have become fixated on the idea of developing human or superhuman-level AI, ideally before their competitors, resulting in less openness. In recent months, Zuckerberg has rebooted Meta’s AI efforts with a string of expensive hires and a new “superintelligence” lab. Zuckerberg has also indicated that Meta may no longer open-source its best models.
China’s tech industry has, in contrast, veered toward greater openness this year. In January 2025, DeepSeek, a then little-known startup, released an open model called DeepSeek-R1 that shook the world due to its advanced capabilities and the fact that it was trained at a fraction of the cost of major US models. Since then, a number of Chinese companies have introduced powerful open-weight models featuring additional innovations.
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