Chi

Spec sheet

Purpose

Chi is an open source Python package designed for pharmacokinetic and pharmacodynamic (PKPD) modelling.Read 11 Oct 2026 · chi.readthedocs.io

Deployment

desktopRead 24 Sep 2026 · chi.readthedocs.io

Free plan

YesRead 24 Sep 2026 · chi.readthedocs.io

Support

The documentation invites users to report bugs or suggest improvements by reaching out to the maintainers.Read 11 Oct 2026 · chi.readthedocs.io

License

The GitHub repository identifies the software license as BSD-3-Clause.Read 11 Oct 2026 · github.com

Founded

2024Read 19 Oct 2026 · chi.readthedocs.io

Bayesian analysis

YesRead 24 Sep 2026 · chi.readthedocs.io

Cost

Chi is open source and free to use.Read 11 Oct 2026 · chi.readthedocs.io

Data import formats

SBMLRead 24 Sep 2026 · chi.readthedocs.io

Dependency

Chi uses the open source Python package Myokit to solve ordinary differential equations and compute sensitivities efficiently.Read 11 Oct 2026 · chi.readthedocs.io

Documentation

The documentation provides tutorials and detailed API documentation for Chi functions and classes.Read 11 Oct 2026 · chi.readthedocs.io

Dosing optimization

It supports dosing regimen optimisation and model-informed precision dosing (MIPD).Read 11 Oct 2026 · chi.readthedocs.io

Import name

After installation, the package is imported in Python as `chi`.Read 11 Oct 2026 · chi.readthedocs.io

Installation

The package is distributed as `chi-drm` on PyPI and can be installed with `pip install chi-drm`.Read 11 Oct 2026 · chi.readthedocs.io

Parameter inference

It supports classical or Bayesian inference of model parameters from measurements, clinical factors, and/or genetic factors.Read 11 Oct 2026 · chi.readthedocs.io

Platform setup

On Ubuntu and macOS, users must install Sundials separately; on Windows, Chi installs Sundials automatically.Read 11 Oct 2026 · chi.readthedocs.io

Population modelling

It can simulate treatment response variability across individuals using hierarchical or non-linear mixed effects models.Read 11 Oct 2026 · chi.readthedocs.io

Scripting support

YesRead 24 Sep 2026 · chi.readthedocs.io

Structured populations

It supports structured populations where inter-individual variability can be partially explained by covariates such as clinical or genetic factors.Read 11 Oct 2026 · chi.readthedocs.io

Treatment simulations

It simulates treatment responses for custom dosing regimens using PKPD, PBPK, and/or QSP models.Read 11 Oct 2026 · chi.readthedocs.io

Plans and prices

Every Chi plan and price →

Where Specifiction places it

• Statistical Analysis Software#31 of 1068.2