GPT-6.1 Sol First Test: 95.91 Overall Across 18 Questions, Two Integrity-Layer Items at 60 Each
OpenAI's GPT-6.1 Sol, released at DevDay on September 29, 2026, scored 95.91 overall in the YZ Index's targeted 18-question first test (Run #348), with full marks in execution and judgment but 60 points each on two of three integrity stress questions.