For many people it is already a lasting improvement. It simply saves us so much work that we can improve in many other areas. And that is improving too; we have a slew of internal tools build with several LLMs, including the openai ones, that effectively replaced full time employees. The entire process of transforming arbitrary json or xml to another json with a required knowledge of the field semantics is now done quite perfectly using LLMs. And that is a lot of the work we do. Creating json schema’s based on a pdf, text, arcane line feed format etc is also now seconds vs hours. Debugging previous (and we have 10000s of these) transforms is also automated and simply, measurable, more accurate and faster than humans. And it was boring work so we can focus on other things.