zfit: Scalable Pythonic Model Fitting for High Energy Physics

zfit is a modern, scalable Python library for statistical model fitting, primarily designed for High Energy Physics but applicable broadly. It leverages TensorFlow (and optionally JAX) for accelerated computations on CPUs and GPUs, offering a user-friendly API for defining, manipulating, and fitting complex probability density functions. The current version is 0.28.0, with a release cadence of typically a few months between minor versions, often driven by new feature development and backend compatibility updates.