HN – Why does it look like LLMs consistently overestimate implementation time?

I have my suspicion: they estimate how long people would have taken to implement some feature, becasue they were trained on such data. I consistently see estimates of 2 week/3 weeks or 5 days, etc. But then implementation takes a day or 2 max using agents within Claude/GPT. Unless I am missing something? Anybody else notice this?

Why does it look like LLMs consistently overestimate implementation time?

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