Languages, libraries, internal company codebases, common tasks (e.g. writing unit tests in your style, scaffolding a CRUD backend, etc.), personal preferences,

Languages, libraries, internal company codebases, common tasks (e.g. writing unit tests in your style, scaffolding a CRUD backend, etc.), personal preferences, and much more. Language models are so general that I probably haven't thought of all the possibilities myself And in some cases not just "better", but if you hook up custom tools then your assistant can do entirely new things!