[cjk]

Extremely context-dependent for me.

For boilerplate stuff like generating tests against a well-defined API, in a compiled language, maybe 2-3x. Far less in languages and frameworks like Ruby/Rails where the distance between generating the code and figuring out if it’s even valid or not is large.

Mechanical refactors that are hard to express via e.g. regex but easy in natural language: maybe 5x.

HTML and CSS, where I know exactly what I want and can clearly articulate it: 2-5x.

For anything architecture-y, off the beaten path, or where generating a substantial amount of code is required: near 0%. Often in the negatives.