DeepSeek V4 Pro vs Flash – Which Should You Use?
When DeepSeek launched V4 on April 24, 2026, it did something that most AI companies do not do. It launched two models on the same day, under the same generation name, and told you upfront that they serve different purposes. No marketing language about one being "premium" and the other "lite." No vague suggestion that one is for enterprise and the other for individuals. Just two models with different architectures, different price points, and different optimal use cases — and the expectation that you would figure out which one fits your workload. Most people have not figured it out yet. They either default to Pro because it sounds more capable, or they default to Flash because it is cheaper, without actually understanding whether their choice matches what they need. This article will fix that. By the end, you will know exactly which model to use, for which tasks, and why — with the actual numbers to back up the decision. What Are DeepSeek V4 Pro and V4 Flash? Befor...