How easily a prompt works again on different AI models or platforms.
Prompt portability is like a recipe on an index card. It still works in another kitchen. No secret oven buttons needed.
It helps teams switch models or move apps. They rewrite fewer prompts for each platform.
Prompt-engineering
Prompt-engineering helps make prompts work on more platforms.
Chat template
Chat template differences can block prompt reuse.
AI Vendor Lock-in
Portable prompts make it easier to leave one AI vendor.