GPT-5.5 Code Execution Plunges from 100 to 75; Main Leaderboard Drops 5.3 Points
GPT-5.5's code execution score in the Smoke evaluation fell from 100.00 to 75.00, pulling the main leaderboard down from 78.49 to 73.20. The drop appears to reflect question-sampling variance rather than a genuine capability regression, as other dimensions rose.