Interesting methodology. I've been running Claude Sonnet in production content workflows for 6 months and the pattern I notice most is that every model hits URLs in the prompt at slightly different priorities.. Claude tends to fetch top-of-message URLs first, while GPT often fetches the last one mentioned. Has anyone else seen ordering bias in which URLs get requested when multiple are in the same prompt? Would make a nice follow-up experiment if your logs have that granularity.