Which is better, GPT 5.5 or Opus 4.7? I tested them by having both look at some pretty complex code that required understanding across multiple repos. GPT 5.5 couldn’t fully grasp the actual logic and made a few minor mistakes in the analysis. Opus 4.7 understood the code logic perfectly and didn’t make any errors. So my current strategy is to use Opus for programming and GPT 5.5 for review and backup. How do you guys choose between GPT 5.5 and Opus 4.7?