Comment by WarmWash
I have a prime example of this were my company was able to save $250/usr/mo for 3 users by having Claude build a custom tool for updating ancient (80's era) proprietary manufacturing files to modern ones. It's not just a converter, it's a gui with the tools needed to facilitate a quick manual conversion.
There is only one program that offers this ability, but you need to pay for the entire software suite, and the process is painfully convoluted anyway. We went from doing maybe 2-3 files a day to do doing 2-3 files an hour.
I have repeated ad-nausea that the magic of LLMs is the ability to built the exact tool you need for the exact job you are doing. No need for the expensive and complex 750k LOC full tool shed software suite.
Was the custom tool developed by copying how the existing software worked? Copying existing functionality is not always possible, and doesn't capture the real costs.