𝗔𝗜 𝗣𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝘃𝗶𝘁𝘆 𝗚𝗮𝗶𝗻𝘀 𝗩𝗮𝗻𝗶𝘀𝗵 𝗪𝗵𝗲𝗻 𝗬𝗼𝘂 𝗠𝗲𝗮𝘀𝘂𝗿𝗲 𝗧𝗵𝗲𝗺 𝗛𝗼𝗻𝗲𝘀𝘁𝗹𝘆
AI vendors promise 40% productivity gains with coding tools. Senior engineers who track their actual time see a different story.
When developers log every hour spent on cleanup and review, that 40% boost drops to single digits. Sometimes the gain disappears.
Vendors calculate speed by how fast an AI writes a function. It provides 30 lines in 10 seconds. This looks fast. But you do not ship a first draft.
A real timeline looks like this:
- AI generates code in seconds.
- You spend 45 minutes reviewing and fixing it.
The generation speed is real. But speed is not the bottleneck for senior engineers. Thinking is the bottleneck. Reading is the bottleneck. Integration is the bottleneck.
You lose time to these tasks:
- Debugging AI bugs. These errors look correct at first. You miss the flaw until it hits production.
- Style guide compliance. AI does not know your team conventions. You must fix the output manually.
- Code integration. AI builds isolated snippets. Your codebase is a connected system.
You move time from writing to debugging. Then you pretend debugging does not count toward your total work time.
AI helps with boilerplate, exploring APIs, and writing initial tests. These are real wins.
The impact depends on your experience level. Junior developers write more code because they get unblocked faster. Senior developers shift their effort from writing to reading.
AI does not make you 40% faster. AI changes where you spend your time.
Most claims measure generation and ignore everything downstream. This is like measuring a writer by words per minute while ignoring the editing process.
If your benchmark stops when the AI finishes, you get big numbers. If your benchmark stops when the code passes review and ships without errors, the numbers are humble.
Honest measurement is not good marketing. It is the only way to decide how to invest in your team.
AI tools are useful. The gains for experienced engineers on real codebases are likely small. Anyone claiming 40% is either ignoring the full cycle or selling a product.
How do you feel after using AI tools? Has it actually increased your shipping speed?
Source: https://dev.to/adioof/ai-productivity-gains-vanish-when-you-measure-them-honestly-4a3a