DeepSeek Releases Open V4 Models with Less Restrictive Licensing

DeepSeek released V4 model variants on April 24, 2026 under MIT License terms, removing legal barriers to deployment. Two versions—V4-Pro for raw capability and V4-Flash for speed—address different use cases. The licensing is more permissive than most competitors, allowing full local deployment without approval gates. Models use hybrid attention mechanisms and a three-tier reasoning system.