Hugging Face's Spring 2026 state-of-open-source report reveals rapid ecosystem growth: 11 million users, 2 million+ public models, and 500,000+ datasets. Key findings include China surpassing the US in monthly model downloads (41% of downloads), Chinese organizations dramatically increasing open releases post-DeepSeek R1, and independent developers rising from 17% to 39% of all downloads. The ecosystem is highly concentrated—top 0.01% of models account for ~50% of downloads. Robotics emerged as the fastest-growing sub-community, with datasets growing from 1,145 to 26,991 in one year. Smaller models dominate deployment due to cost and hardware constraints, while mean downloaded model size jumped from 827M to 20.8B parameters driven by quantization and MoE architectures. Alibaba's Qwen family has over 200,000 derivative models. The report also covers AI sovereignty initiatives, hardware trends including AMD support expansion, and growing AI-for-science communities.
