ReliaSim® vs AnyLogic
A Multimethod Platform and a Purpose-Built Line Simulator

AnyLogic is a general simulation platform that supports discrete event, agent-based and system dynamics modeling in one tool. ReliaSim is built for one job: production lines and the supply chains they feed, modeled from each line’s own stop history. This page sets out where each fits.

Price first

ReliaSim’s price is published: $8,000 per user per year for the desktop license, on our pricing page. AnyLogic’s purchase page lists its editions without prices and offers a “Get a Quick Quote” form (AnyLogic purchase page). It also offers a free Personal Learning Edition “for evaluation and personal use only.”

What AnyLogic is built for

AnyLogic describes itself as “a single platform for all your business’ dynamic simulation modeling needs” and says it supports agent-based, system dynamics and discrete-event modeling, which it calls “true multimethod modeling” (AnyLogic features). Its libraries include a Material Handling Library for manufacturing, warehouse and intralogistics systems, and a Fluid Library for “bulk materials, fluids, and a large number of discrete items” (Fluid Library). The desktop editions are Personal Learning, University Researcher and Professional, and there are Private Cloud editions for teams (purchase page).

Where AnyLogic is the better fit

• You need several methods in one model. Agent-based behavior, system dynamics and discrete event logic together, for example a market model driving a factory model, is what AnyLogic is designed for.
• Problems well beyond the production line. Pedestrian flows, transport, healthcare, policy and market models sit outside ReliaSim’s scope.
• You want to program the model. A modeler who wants to write custom logic and build their own objects will use that freedom.
• Detailed facility layout. Material handling equipment, layouts and 3D animation of a facility are a strength of a general platform.

ReliaSim doesn’t try to match that breadth.

Where ReliaSim fits

The price is on the page

A ReliaSim desktop license is $8,000 per user per year, and you can buy it online. ReliaStats, the companion tool that fits failure and repair distributions from your stop data, is $1,800 per user per year, and its Designer is free. The Sandbox and the desktop demo cost nothing. Every price is on the pricing page.

Discrete rate, built for high-speed lines

A discrete event model moves each unit through the line as its own event. On a line that makes hundreds of units a minute, that’s a great many events per simulated hour. ReliaSim uses discrete rate simulation, which models material as flow at rates and changes state only when a rate changes: a machine stops or restarts, or a buffer fills or empties. The work grows with the number of stops, not the number of units. A thousand one-year runs of the five-machine demo bottling line take about two and a half minutes on a laptop, or 0.154 seconds per simulated year. That speed is what makes sweeps practical: the buffer study behind how big should a buffer be? is 7,770 runs in 31.8 seconds. Discrete rate vs discrete event explains the difference in full.

Validated before it predicts

A published food plant model, from Fischel and Lange at the 2020 Winter Simulation Conference, was rebuilt in ReliaSim and independently validated by Tom Lange. It came within 1% of the plant’s measured OEE (the validation study). Every ReliaSim model follows the same order: reproduce the line’s own history, failure mode by failure mode, then ask what-if. How to check a digital twin’s accuracy claim sets out the test, for any vendor.

Your data stays on your machine

ReliaSim is desktop software for Mac and Windows. Models are files on the modeler’s own machine, and it works air-gapped. Security and deployment covers what IT usually asks.

At a glance

Using both

A team with an AnyLogic model of a wider system can still test a specific line decision in ReliaSim, where the line’s own stop data decides what the line will make, and feed that figure back into the bigger model.

How to choose

Start from the question. If it spans many kinds of system and you want to program the model, a multimethod platform is the direct route. If it’s about what a production line will really make, and what a change to it is worth, start with a model built from the line’s own stops and checked against its measured OEE. AnyLogic is referenced here for identification only; no affiliation or endorsement is implied.