The test revealed clear differences in how each model approached the redesign. Gemini 3 Pro delivered solid improvements in visual layout and SEO structure but lacked refinement. Opus 4.5 stood out with superior planning, executing a step-by-step workflow that produced an aesthetically pleasing, functional design complete with hover effects, reading time estimates, and strong call-to-action elements—though it missed related article links and full JSON-LD implementation. Codex 5.1, while generating correct JSON-LD markup, failed in frontend design with poor visual choices, broken links, and missing UX components, signaling a shift toward backend strength rather than front-end creativity. Overall, Opus 4.5 emerged as the top performer for design tasks, demonstrating that strategic model selection based on strengths—such as planning, interface design, or technical coding—can significantly enhance workflow efficiency and output quality.