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Actuarial science · open source
Navigate risk by the stars.
ZNSTARS charts a constellation of open actuarial tools, models and data — from Monte-Carlo simulation and catastrophe models to fine-tuned LLMs — shared freely with the community.
About us
Knowledge shines brighter when it’s shared.
At ZNSTARS, we believe that by sharing our expertise and resources, we can help drive innovation, improve financial transparency, and foster collaboration within the open-source ecosystem. Our work is guided by the principles of generosity, inclusivity, and the belief that by contributing to the community, we can help build a better, more equitable future for all.
More about ZNSTARS- GenerosityTools, models and data released in the open.
- InclusivityBuilt so any actuary or analyst can pick them up.
- TransparencyClear methods behind every number.
- CommunityBetter outcomes, built together.
Star chart
View all research
Our research
Each star in the constellation above is a project. Pick one to dive in.
✦ Python package
ActSim
Fit distributions, run Monte-Carlo with copulas and simulate synthetic claims.
Explore → ✦ Python libraryActStats
numpy/scipy statistics, speaking the actuary's language.
Explore → ✦ Python packageActLLMInfer
One completion() API across US and Chinese LLM providers.
Explore → ✦ Python packageActDecor
A decorator that adds LLM commentary to any Python function.
Explore → ✦ Data playgroundClaim Simulator
Synthetic claim trajectories and loss development triangles.
Explore → ✦ Catastrophe modelingCat Modeling
Hazard, inventory, vulnerability and loss modules for flood risk.
Explore → ✦ Catastrophe monitoringLA Fire
Fire perimeter tracking and properties-at-risk estimates.
Explore → ✦ Fine-tuned LLMsGeoLLM
Named-entity models that parse and correct Canadian addresses.
Explore → ✦ Machine learningML in Insurance
LLM-powered address autocomplete and correction, in action.
Explore → ✦ Open dataOpen Data
Countrywide Canadian address data with FSA and condo flags.
Explore → ✦ SoftwareAutomation
ResQ automation, task scheduling and Excel batch processing.
Explore →
Small satellites
Gadgets
Handy little web apps built along the way.
Tavern: project management web app
A lightweight project management solution that lets teams easily log, track and visualize project updates through a Google Sheets-based web app.
Signal us
Feedback and questions
Ideas, collaborations or a question about one of the tools — we’d love to hear from you.