Despite topping synthetic benchmarks, DeepSeek’s V4 Flash model completed only 53.8% of complex, multi-step agent tasks across...

Source Brief

Despite topping synthetic benchmarks, DeepSeek’s V4 Flash model completed only 53.8% of complex, multi-step agent tasks across eight independent harnesses. The discrepancy between leaderboard scores and real-world tool-use reliability underscores the need for rigorous operational evaluation before production deployment.