GPT-4.1 2.0% Old vs 5.6% New Benchmark Enterprise Accuracy Drop

https://thoughtminty.com/s/4Egl73wBkLXcFVc2mfXTD

OpenAI GPT-4.1 Degradation and Document Complexity Impact Understanding the Accuracy Shift in GPT-4.1 As of March 2026, OpenAI's GPT-4.1 revealed a surprising shift in enterprise accuracy benchmarks, dropping from roughly a 2