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Hey on wikpedia (https://en.wikipedia.org/wiki/Short-rate_model) there are quite a few short rate models listed, but which models are the most commonly used now? Because such simple models as Vasicek or CIR are probably already insufficient?

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    $\begingroup$ Short rate models used are mostly either 1 factor Hull & White or 2 factor Hull & White/G2++, with a calibration step specific to the product being priced. For instance bermuda swaptions are often priced with a 1 factor Hull & White that takes the mean reversion speed as an input and calibrates a time dependent volatility to coterminal european swaptions, making the bermuda swaption price a function of the mean reversion and european swaption prices. $\endgroup$ – Antoine Conze Mar 30 at 14:23

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