Previous: https://www.youtube.com/watch?v=etcVpATXpSc&list=PL3rNcyAiDYK2Pd\_HgNb8E2tw4Mb0vw1f1&index=15 Next: https://www.youtube.com/watch?v=K1-EYWTWmGc&list=PL3rNcyAiDYK2Pd\_HgNb8E2tw4Mb0vw1f1&index=17 Full written series: https://devlink.sn/buildanywhere Claude Code gives you three models to choose from. Opus thinks deeper but costs more; Sonnet is the fast, affordable workhorse. There's also a third option most people miss: opusplan (access it with /model opusplan), which uses Opus for planning and Sonnet for the actual edits. Here's how to pick, when to switch, and how to keep your token usage reasonable without obsessing over it.