Not sure if changed with GPT-5, but Claude was explicitly tuned to leverage XML-like tags, while GPT-3.5 and 4 seemed to prefer Markdown-like structure. https:

Not sure if changed with GPT-5, but Claude was explicitly tuned to leverage XML-like tags, while GPT-3.5 and 4 seemed to prefer Markdown-like structure. https://docs.anthropic.com/en/docs/build-with-claude/prompt-engineering/use-xml-tags https://docs.anthropic.com/en/docs/build-with-claude/prompt-...