Three reasons why DeepSeek’s new model matters

DeepSeek released V4, an open-source AI model (software available for anyone to download and modify) that can process much longer text inputs than previous versions and offers performance comparable to top commercial models at significantly lower costs. The model comes in two versions: V4-Pro for complex coding tasks and V4-Flash for faster, cheaper operation, with both offering reasoning modes (where the model shows its step-by-step thinking). This release matters because it demonstrates that open-source models can compete with expensive commercial alternatives, potentially allowing developers to access advanced AI capabilities without high costs.