Which AI Made This?
A comparison of how different AI models approach UI design, with and without Anthropic's frontend design skill enabled.
Prompt · I want you to design the landing page for a note-taking application as essentially a second brain. You should design five iterations and each of them should be accessible within the slash one, slash two, slash three like pages directory. And then you should add a little button that lets me switch between them easily.
This site was designed by Composer 2.0 LOL
With Design Skill
Composer 2.0
With Design Skill
Gemini 3.1 Pro
With Design Skill
GPT 5.5 low
With Design Skill
GPT 5.5 high
With Design Skill
Kimi K 2.6
With Design Skill
Opus 4.7
With Design Skill
GLM 5.1
With UI SH Skill
With UI SH Skill
Composer 2.0
With UI SH Skill
GPT 5.5 low
With UI SH Skill
GPT 5.5 high
With UI SH Skill
Opus 4.7
Without Design Skill
Composer 2.0
Without Design Skill
Gemini 3.1 Pro
Without Design Skill
GPT 5.5 low
Without Design Skill
GPT 5.5 high
Without Design Skill
Kimi K 2.6
Without Design Skill
Opus 4.7
Without Design Skill
GLM 5.1
With Uncodexify skill
GPT-5.4