Stan (software)

Stan
Original authorStan Development Team
Initial releaseAugust 30, 2012 (2012-08-30)
Stable release
2.37.0  / 2 September 2025 (2 September 2025)
Written inC++
Operating systemUnix-like, Microsoft Windows, Mac OS X
PlatformIntel x86 - 32-bit, x64
TypeStatistical package
LicenseNew BSD License
Websitemc-stan.org
Repository

Stan is a probabilistic programming language for statistical inference written in C++. The Stan language is used to specify a (Bayesian) statistical model with an imperative program calculating the log probability density function.

Stan is licensed under the New BSD License. Stan is named in honour of Stanislaw Ulam, pioneer of the Monte Carlo method.

Stan was created by a development team consisting of 52 members that includes Andrew Gelman, Bob Carpenter, Daniel Lee, Ben Goodrich, and others.