US and Chinese companies train almost all of the most-used AI models (ourworldindata.org)

• US companies dominate top-50 AI models on OpenRouter.
• Chinese models grew from 5 to 20 between Jan 2025 and May 2026.
• Only Canada and France have notable models outside US and China.

"Analysis of OpenRouter data from January 2025 to May 2026 reveals that almost all top-50 AI models come from US and Chinese companies. US firms still lead, but Chinese models grew from 5 to 20 in 16 months. Only Canada's Cohere and France's Mistral appear outside the US-China duopoly."