Applied AI: Reasoning Models

Information in this post reflects publicly available sources as of October 21, 2026. A team switches its support-ticket tagger to a reasoning model after it tops their internal benchmark. A week later, tagging takes nine seconds instead of one, the bill has quadrupled, and the tags are no more accurate than before. In the same week, an engineer hands that model a date-range bug that the fast model had confidently misdiagnosed three times. It find… Read More