DeepSeek-V4 Pro (1.6T-A49B MoE) and V4 Flash released as open weights

DeepSeek released its V4 series on Hugging Face, including a 1.6T-A49B MoE Pro version and a 284B-13B Flash version. The Flash model is noted for strong performance relative to size and architectural changes that improve and cheapen long-context capabilities.