Claude vs GPT-5.1 Codex - I Swapped Their Prompts! (Who Won?)

I forced GPT-5.1 Codex (in VS Code) to use Claude's best landing page prompt... and Claude to use ChatGPT's prompt. Side-by-side real-time battle – who built the cleaner, bug-free, better-looking landing page?

You decide the winner in the comments ..I reveal my pick at the end!

Timestamps:

0:00 The ultimate GPT-5.1 Codex vs Claude showdown
0:45 Swapping the prompts (ChatGPT → Claude, Claude → Codex)
2:20 GPT-5.1 Codex running Claude's prompt in VS Code
3:45 Claude running ChatGPT's prompt
8:30 The big reveal – side-by-side comparison
12:50 Why I personally think Claude won
14:20 Test them yourself + next battles coming
If you loved this battle smash LIKE and comment which models I should throw against each other next (GPT-5.1 vs Grok 4 vs Gemini 2.5 vs DeepSeek etc.)

Tools used in this video:
• GPT-5.1 Codex (agent mode, medium/high reasoning in VS Code)
• Claude (latest)
• My real company as the test project
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