You don’t have to pick one Claude model for the whole project. @kieranklaassen uses Sonnet 5.5 and Opus 5.5 together: 1. Start with Sonnet. Brainstorm, try a few directions, and land on the idea through quick rounds of feedback. 2. Switch to Opus for the heavy work. Use it for the longer, more detailed build once you know what you want. 3. Return to Sonnet. Iterate on the result and polish it with feedback. Sonnet 5.5 costs $10 per million output tokens, compared with Opus 5.5’s $20. That…