I did find some benefit in lowering the cost of exploratory work, but that's it—certainly worth 20€/month, but not the price of any of the "ultimate" plans.
For example today I had to write a simple state machine (for a parser that I was rewriting so I had all the testcases already). I asked Claude Code to write the state machine for me and stopped it before it tried compiling and testing.
Some of the code (of course including all the boilerplate) worked, some made no sense. It saved a few minutes and overall the code it produced was a decent first approximation, but waiting for it to "reason" through the fixes would have made no sense, at least to me. The time savings mostly came from avoiding the initial "type the boilerplate and make it compile" part.
When completing the refactoring there were a few other steps like where using AI was useful. But overall the LLM did maybe 10% of the work and saved optimistically 20-30 minutes over a morning.
Assuming I have similar savings once a week, which is again very optimistic... That's a 2% reduction or less.
For example today I had to write a simple state machine (for a parser that I was rewriting so I had all the testcases already). I asked Claude Code to write the state machine for me and stopped it before it tried compiling and testing.
Some of the code (of course including all the boilerplate) worked, some made no sense. It saved a few minutes and overall the code it produced was a decent first approximation, but waiting for it to "reason" through the fixes would have made no sense, at least to me. The time savings mostly came from avoiding the initial "type the boilerplate and make it compile" part.
When completing the refactoring there were a few other steps like where using AI was useful. But overall the LLM did maybe 10% of the work and saved optimistically 20-30 minutes over a morning.
Assuming I have similar savings once a week, which is again very optimistic... That's a 2% reduction or less.