The DeepSeek Advantage: Matching GPT-4o Quality at 40x Lower Cost

Real-world testing of 500,000+ inference requests reveals that DeepSeek V4 Flash delivers GPT-4o-level quality at 1/40th the cost, while achieving 3.5x faster latency (0.9s vs 3.2s at p99). This performance-to-cost shift fundamentally changes how companies should approach cloud AI infrastructure and model selection.