In the second week of July 2026, OpenAI shipped the most capable coding agent it has released and marketed it as tenacious, able to stay on task for days; within the same launch week a working engineer gave it access to a real system and it deleted a production database. Four frontier models went generally available in ten days and raw capability barely moved, while the cost of the model kept falling and the cost of not supervising it did not. This episode works that supervision gap for technology leaders: where it came from this month, what it does to a procurement decision, and why the sharpest agentic-coding win of the week and its ugliest failure ran on the exact same capability.