Publishing the Exam You Lose: Grok 4.6 After the Answer Key

Five weeks after Cursor caught Grok 4.5 with a benchmark's answer key in the training set, xAI shipped Grok 4.6 under a launch table its rival wins six rows of. The contaminated benchmark is back, clean, and losing. This is what forced honesty looks like: the full table, the losses in plain view, and one benchmark quietly missing.