Decision Intelligence Platform | World Modeler™ by Quantellia

Decision Intelligence ensures you’ve agreed to your decisions, then connects your data and models to business outcomes that matter.

World Modeler is a self-service decision intelligence platform that helps you design and deploy systems that recommend actions to take to achieve your outcomes.

World Modeler™ connects your choices of actions and outcomes with data, machine learning, AI, and more — the most mature decision intelligence (DI) solution in the market with a 15-year history of success at large and small organizations, public and private, worldwide.

See World Modeler in action - 30 minutes

DI creates a digital twin of one decision at a time — helping your team start quickly, deliver results early, and grow from there. Unlike traditional AI, which is limited to predictions and assumes the future will resemble the past, World Modeler simulates outcomes based on how your choices of actions shape what comes next, even in unfamiliar territory.

By simulating the real-world context of your choices, World Modeler empowers analytics and modeling teams to work in collaboration with their customers to deliver targeted, actionable recommendations — and gives business decision makers the clarity they need to choose the best path forward.

What Makes World Modeler™ Unique

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Self-service Decision Intelligence at the Core

Built by the inventors of Decision Intelligence, World Modeler™ brings cause-and-effect reasoning into every step of your decision process, and lets you model your own decisions through our World Modeler Studio™ - the power (and data, and models) is in your hands.

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Agentic AI, Not Just Automation

Unlike other agentic AI systems that generate plans and deliverables, World Modeler™ simulates the most important decisions you face — helping you choose the best actions, not just complete tasks.

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One Decision at a Time

Focused, low-friction modeling of individual decisions means you can start fast, prove value early, and scale only when you're ready.

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From Strategy to Execution

World Modeler connects analytics, AI, and modeling to decisions at every level — strategic, tactical, and operational — ensuring alignment between technical teams and business goals.

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Beyond Traditional AI: Causal Simulation Engine

While traditional AI — including machine learning — relies on patterns from the past, World Modeler™ simulates the future using a causal digital twin, helping you understand the impact of decisions in new, uncertain, or changing situations.

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Enterprise Ready

Secure, scalable, and API-first — designed to fit into your ecosystem and support critical decisions at scale.

See World Modeler: 30 minutes

World Modeler Deep Dive for Decision Modelers

No pressure, no prep — just a friendly, expert conversation.

How World Modeler™ Works

World Modeler™ walks you through a clear, structured process — powered by a Decision Intelligence core.
At the center is the Causal Decision Diagram (CDD): a next-generation business dashboard that connects action choices to KPIs to outcomes,
simulates how decisions impact your goals, and gives you a built-in early warning and adjustment system.

Here’s how you’ll create your CDD in World Modeler Studio™, step by step:

Step 1: Define Outcomes

Identify the business results you want to achieve — from strategic goals to operational improvements.

Step 2: Choose Actions

List the options available to influence those outcomes.

Step 3: Build a Causal Decision Diagram

Use your team’s knowledge and data to link actions to outcomes — including dependencies and external factors.

Simulate

Run simulations to explore how each decision might play out under different scenarios. Find the best actions to reach your outcomes.

Choose the best actions

See which options are most likely to produce the outcomes you care about — and why. Then World Modeler™ explains why those actions are the best, and – if you like – gives you a number of choices of options.

Take Action, Monitor, and Adjust

Put decisions into motion, track KPIs, alert when early warnings indicate that outcomes won’t be reached, and return to decision making and changing actions as needed as your situation evolves.

Platform Capabilities

Build and Manage Visual Decision Models

Create, organize, share, version, and govern visual decision models using Causal Decision Diagrams and other model-aware views.

Collaborate, Version, Validate and Govern

Support controlled sharing, role-based permissions, workflow states, version comparison, auditability, and production safeguards.

Evaluate, Simulate, and Optimize Decisions

Explore scenarios, assess sensitivity and risk, validate models, and optimize actions against defined objectives.

Integrate and Extend

Connect World Modeler to other systems through OpenDI, the secured REST API, plugins, and the Client Framework.

Connect Data, AI, Models, Agents, and APIs

Reference the data sources, machine learning models, large language models, agents, functions, and services used in decision models.

Secure and Deploy at Enterprise Scale

Use enterprise identity and security controls with cloud-hosted, private-cloud, or on-premise deployment.

Explore all Platform Features

Use World Modeler™ Your Way — With or Without Our Help

For over 15 years, we’ve helped organizations simulate and improve complex decisions using the World Modeler™ engine. Whether you want to build your own solution, use our low-code tools, or bring in our team, we’ll meet you where you are.

Build a Purpose-Built Experience

Integrate World Modeler’s powerful simulation engine into your own front end, tailored for your users, workflows, and branding.

Plug Into Your Ecosystem

Add World Modeler to your current analytics platforms, enterprise tools, or portals using our robust API.

Use Our Self-Service World Modeler Studio

Quickly create, run, and visualize simulations using World Modeler Studio™ — our user-friendly, low-code interface for decision modeling.

Need Support?

Choose the implementation model that fits your needs. We offer flexible options for all types of teams and levels of expertise.

✅ We can build a complete solution for you
✅ We can support your internal team
✅ You can do it all yourself with our docs, Studio, and API

Learn World Modeler: 30 minutes

For Developers

World Modeler™ is built for enterprise integration, simulation automation, and advanced decision workflows.

World Modeler™ is OpenDI compatible, meaning that it interoperates with other software in the OpenDI ecosystem.

Explore the full API specification at api.worldmodeler.com.

Testimonials

Quantellia has the depth of experience necessary to successfully deliver serious data-driven solutions to companies like ours.

Michele Colucci, Esq.

CEO, DigitalDX Ventures

I believe Quantellia has a unique ability to use AI to produce very useful real-time analyses-and presentation of key results-that will assist in identifying and quantifying the key impacts of projected changes in a client organization’s operations.

William A. Fenwick

Founding Partner Emeritus, Fenwick & West LLP

Quantellia has a great depth of knowledge, and a first-rate ability to deliver a project on time, to requirements, and to meet our unique requirements.

CLAYTON MICHAELS

Deputy CTO, Administrative Office of the US Courts

Collaborating with Quantellia was a transformative experience for our team. Dr. Pratt’s capacity to rapidly comprehend our project objectives, align with our vision, and deliver on complex generative AI projects has been extraordinary. In a field that is increasingly competitive and demanding, Quantellia’s speed and accuracy have been instrumental in helping us maintain our edge.

Alfonso Albuquerque

Managing Partner, Decision Intelligence, Astral Insights

Lorien Pratt's approach transformed my thinking about the role of data in decision making. Inspired by her insights in 'Link,’ I used Decision Intelligence for my consulting work and to navigate a complex career transition. Later in that process, her detailed exposition in 'The Decision Intelligence Handbook' helped me up-skill and tackle a critical job interview. Lorien Pratt's guidance has been a compass, pointing the way toward success for myself and others.

Dr. Kayla Lewis

Associate Professor, Monmouth University

Dr. Pratt and Quantellia have been incredible partners in supporting our development of enterprise-grade decision intelligence solutions. As a machine learning pioneer and eminent voice in the decision intelligence, Dr. Pratt has again proven herself as a world-class thought leader and practitioner of the powerful new field of decision intelligence. Her team was friendly, professional, and delivered above and beyond our expectations. I look forward to working with Quantellia again in the near future!

Christopher Andrassy

Managing Partner, Decision Intelligence, Astral Insights

Dr. Pratt accelerated our machine learning journey with humor, intelligence, confidence, and examples that made sense. She really made the concepts accessible to non-data scientists, and we are delighted at the outcome of building our first ML model, and have the confidence to continue learning, building, and growing in this field. We found value in the 2-day intensive workshop to put all the pieces together.

Chris Kreul

Chief Technology Officer, First Bank and Trust

Working with Dr. Pratt allowed PI to go to market with an important demo that is already accelerating interest in our solution. It's been an absolute delight to work with Dr. Pratt and her team, who have been extremely helpful with much innovation and ideation around our ambitious climate solution. We look forward to continued work together for the foreseeable future.

Jennie-Marie Larsen

CEO & Founder, The Climate PI, https://www.fpi.earth

Quick 30-minute World Modeler demo