I was underwhelmed by Opus4.6. I didn’t get a sense of significant improvement, but the token usage was excessive to the point that I dropped the subscription for codex. I am suspect that all the models are so glib that they can create a quagmire for themselves in a project. I have not yet found a satisfying strategy for non-destructive resets when the systems own comments and notes poisons new output. Fortunately, deleting and starting over is cheap.