On April 24, 2026, DeepSeek officially released its preview of V4, the long-awaited flagship model. This marks the most significant product release since its R1 model shook the global AI industry in January 2025. Unlike V3 and R1's "cost-performance breakthrough" strategy, V4 delivers substantive technical leaps across architecture, context window, and chip adaptation.

This article breaks down the core changes in DeepSeek V4, its industry impact, and what developers need to know.

1. Architectural Innovation: Engram Memory and Efficient Attention

The most striking technical breakthrough in DeepSeek V4 is its new Engram memory architecture . At its core lies a fundamental rethinking of the attention mechanism.…