Discrete Choice Models for Economic Applications R package choicer version 0.2.0 Fast estimation of discrete-choice models for applied economics. Frequentist likelihoods, analytical gradients, and Hessians are implemented in C++ with 'OpenMP' parallelism, scaling efficiently to specifications with many alternative-specific constants. Compiled Gibbs samplers provide Bayesian multinomial probit and hierarchical models. Post-estimation routines cover predicted shares, own- and cross-price elasticities, diversion ratios, willingness to pay, and welfare counterfactuals. Supports multinomial logit ('MNL'), mixed logit ('MXL'), nested logit ('NL'), Bayesian multinomial probit ('MNP'), and hierarchical Bayesian multinomial logit and probit ('HMNL', 'HMNP'). Software Depends: R (>= 4.1.0) Imports: data.table, graphics, nloptr, randtoolbox, Rcpp, stats, utils LinkingTo: Rcpp, RcppArmadillo Suggests: testthat (>= 3.0.0), numDeriv, future.apply, goftest, knitr, rmarkdown Fernando Cordeiro <fernandolpcordeiro@gmail.com> Comprehensive R Archive Network (CRAN) Fernando Cordeiro [aut, cre, cph] LGPL (>= 3) 2026-07-14 application/tgz https://CRAN.R-project.org/package=choicer doi:10.32614/CRAN.package.choicer