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The easy way to ship Stan models

Project description


:mountain: The easy way to ship Stan models

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Strata is a command line tool. To install, run:

pip install strata-cli

This will give you the strata command. You can also install it with Homebrew.

Getting Started

Package a model

strata bernoulli.stan

This creates a dist directory with:

  • bin - Stan binaries
  • lib - TBB libraries
  • licenses - license files

You can also package multiple models

strata bernoulli.stan regression.stan

Running Models

Run a model directly

dist/bin/bernoulli sample data ...

Or load it into CmdStanPy

from cmdstanpy import CmdStanModel

model = CmdStanModel(exe_file='dist/bin/bernoulli')

CmdStanR (not on CRAN yet)


model <- cmdstan_model(exe_file="dist/bin/bernoulli")

Or CmdStan.rb

require "cmdstan"

model = "dist/bin/bernoulli")


  • Linux: package on the oldest platform you support
  • Mac: models run on macOS 10.14+ by default (set MACOSX_DEPLOYMENT_TARGET to override)
  • Windows: not supported yet


Cross-compile for a different architecture (on the same OS)

strata --cross-compile ...

On Ubuntu, this requires:

sudo apt update
sudo apt install gcc-aarch64-linux-gnu g++-aarch64-linux-gnu


Specify the output directory

strata -o dist ...

Show build output

strata --debug ...

Create a static build (experimental, only working on Mac)

strata --static ...


On Mac, you can use:

brew install ankane/brew/strata


View the changelog


Everyone is encouraged to help improve this project. Here are a few ways you can help:

To get started with development:

git clone
cd strata
pip install -e .

# for tests
pip install -r requirements.txt

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