Nvidia's Nemotron 3 Ultra becomes the smartest open US model, but China still leads

Nvidia Releases Its Best Open AI Model Yet—But Still Lags Behind China - Decrypt

Nemotron 3 Ultra tops US open models but trails Kimi K2.6 (intelligence 48 vs 54). Chinese open-weight captured 30% global usage; Nvidia bets speed (300 token/sec) beats intelligence for autonomous agent latency—reshaping how CTOs evaluate open-weight buys.