DeepSeek V4-Pro and V4-Flash: Migration Guide and API Setup

DeepSeek dropped two new models on April 24, 2026: V4-Pro, a 1.6-trillion-parameter MoE flagship, and V4-Flash, a 284-billion-parameter workhorse optimized for throughput. Both support a one-million-token context window, dual Thinking/Non-Thinking mo...