Want to Speed Up Training Development Time?
Robyn Defelice's 2023 update of the ATD research on the time required to create training. There are some numbers here, but use caution in benchmarking from these stats. They aren't really designed to be benchmarks, partly because the data isn't standardized to seat time. Robyn suggests (and I agree) that you're better off tracking your own time in your organization and using internal benchmarks that account for your variables.
The largest conclusion we can draw comfortably from the data is that development time still varies considerably for each type of learning product—and no matter what, the variables of the training development for each organization greatly differ. We do not advise that you use the results as stand-alone pieces for calculating project estimates because context is necessary to understand respondents' situations.