The Open Source Debut of 1.6T Parameter DeepSeek-V4 Matches the Performance of Top Closed Models at a Fraction of GPT-5.5's Cost
DeepSeek has launched the preview version of its V4 series of open-source large models, marking a significant milestone in the open-source AI community's challenge to closed-source leaders. The DeepSeek-V4 achieves performance comparable to top-tier closed models at a much lower inference cost.