| Mobile Web

China open-weight models close gap with U.S. closed AI, with costs one-fifth and a 4.4-month gap

Open-weight AI models are rapidly catching up with U.S. big tech’s top closed models, changing how companies deploy AI tools. Mozilla analysed the performance gap at about 4.4 months. Its report said value for money matters more than raw performance, citing Moonshot AI’s open model Kimi K3 and Anthropic’s closed model Fable 5. It said closed models still lead in expert work, intensive search and long-context tasks.