Claude Opus 5.5 vs Gemini 4 Carbon

It depends on the site. Here are 15 templates where both models built the same prompt — mostly landing page (6), e-commerce (3), interactive explainer (3) and portfolio (3) — so you can compare real results instead of benchmarks. Open any pair to try both live demos.

4 of the shared templates use 3D / WebGL: 3D Product Launch Page, 3D Photo Gallery, Solar System 3D Explainer and Y2K Chrome Fashion Drop Page. Both builds of each are live, so compare how each model handled the scene, performance and mobile layout.

3 shared prompts ask for more than one page (Boutique Hotel Website, 3 pages, Music Festival Website, 3 pages and Generative Art Studio Website, 3 pages). Each model built every page from the same prompt.

On these 15 prompts, Claude Opus 5.5's builds shipped a median of 32 files and Gemini 4 Carbon's 32. More files is not better or worse on its own — open the demos and compare.

Claude Opus 5.5 ran in Cursor and Claude Code; Gemini 4 Carbon ran in Cursor. The prompt text was identical.

Yes. For each template, Claude Opus 5.5 and Gemini 4 Carbon got the same published prompt, with nothing added. Each build fills the [VARIABLES] (brand name, copy) with its own values, so the content differs while the brief stays the same.

Yes. Every template in this Claude Opus 5.5 vs Gemini 4 Carbon comparison has its full prompt on its template page (Pro templates show it to Pro members). Paste it into your AI coding tool with your own values and compare your result with both demos.