Reach for Sonnet 5.5 if: • You want to build or design through short rounds of feedback. • You need help outlining an argument or planning a project. • You can start at medium effort and check the work as it goes. Stay on Sonnet 5 if: • It already handles your coding well. In @kieranklaassen’s 15-task coding test, Sonnet 5 passed 10 tasks at low effort. Sonnet 5.5 passed 9 at low, medium, and high. The upgrade didn’t improve that score. Wait if: • You need an unattended build that’s ready to…