I'm working on a project related to IRT.

I really want to analyze my data with python. I googled it, but I couldn't find the module I need.

Do you know some great modules that can handle IRT?

Here is the list of what I want to do:

  1. estimation of the graded response model (GRM)
  2. equating using the GRM
  3. estimation of the multi-dimensional GRM
  4. equation using the multi-dimensional GRM

If there is no module in python, I also want to know the packages of R, STAN, etc.

Thank you!

1 Answer 1


I don't know of any python module.

The most flexible and competitive IRT packages in R are maybe mirt and TAM. See also the CRAN TASK VIEW on Psychometrics

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