stanli - The Stan Language Interpreter

Compile and sample Stan models without a C++ toolchain. Stan models are lowered to a graph of operations over precompiled 'stan-math' kernels rather than translated to C++ and compiled, so preparing a model takes milliseconds instead of minutes. Provides adaptive Hamiltonian Monte Carlo with the diagnostics a Bayesian workflow needs (rank-normalized split R-hat, bulk and tail effective sample size, E-BFMI), and L-BFGS optimization. The runtime library is downloaded on first use rather than bundled; see stanli_install().