The US and China are fighting over AI ‘distillation’. Here is what the term means and why it matters.

What is distillation? It is a technique where a smaller AI model learns by studying the answers of a bigger, more expensive model.

Why is it controversial? Building top models costs billions. If a rival copies the ‘reasoning’ cheaply, the original builder loses its edge.

What did OpenAI allege? That accounts linked to China’s Moonshot AI tried to extract reasoning patterns from its models. OpenAI shut about 15,000 such accounts.

What did governments say? A September 8 advisory from US agencies named six Chinese firms in the context of AI-related risks.

Why should you care? The fight will shape who leads in AI. It could also affect which AI tools and models are available in different countries.

Training a frontier AI model can cost hundreds of millions of dollars. Distillation lets a smaller lab gain similar abilities for a fraction of the price. That cost gap is at the heart of the dispute.