Reviewing Claude Opus 4.5

What It Covers

James and Greg test Claude Opus 4.5 against Gemini 3 Pro by building a complete SaaS application for estate management, comparing design quality, feature implementation, and coding capabilities across both AI models.

Key Questions Answered

• •Claude Skills Setup: Create three custom skills in Claude Code - elevated direct response copywriting (studying leaders like Alex Hormozi), personal brand voice (from your own content), and landing page architecture - to generate conversion-optimized pages with one prompt instead of iterative refinement.
• •Front-End Design Skill: Install Claude's official front-end design plugin using two commands in Claude Code to avoid generic AI aesthetics with gradients and emojis. This skill produces production-grade interfaces that don't look vibe-coded, maintaining consistent visual style across multi-page prototypes.
• •Model Comparison Results: Opus 4.5 created more refined, deeper product thinking with better dashboard layouts and maintained aesthetic consistency across pages. Gemini 3 Pro automatically integrated AI features into the MVP and generated higher-fidelity mockups using Nano Banana, but felt less polished overall.
• •Anti-Gravity Integration: Google's Anti-Gravity IDE connects directly to Chrome via extension, accessing DOM data and console logs programmatically to debug without manual copy-pasting. It integrates Nano Banana Pro for generating high-fidelity visual mockups before writing code, mimicking real design team workflows.