Every GPT-5 coding example implemented with Opus 4.1
gpt-5-vs-opus-4-1-coding-examples.vercel.app
gpt-5-vs-opus-4-1-coding-examples.vercel.app
All of these were one-shotted by Claude.
(OpenAI's GPT-5 Coding Examples: https://github.com/openai/gpt-5-coding-examples)