DeepSeek V4 Pro evaluation: scenario fit over parameter racing
DeepSeek V4 Pro is best read as a production-fit release, not only a parameter race. The headline claims are 1M context, lower long-context cost, sparse attention, a Pro and Flash split, and stronger agent/coding behavior. The hands-on results are more balanced: V4 Pro looks useful and more polished, but the right conclusion is scenario fit, not automatic victory.