Decision applications for manufacturers and supply chains, including many Fortune 500 operators. See customer results.
Explore the efficient frontier for your problem
Simulation, reliability statistics and AI agents for production lines and supply chains.
ReliaSim models production lines, plants and supply chains from your own stop data and checks the model against what the plant actually did. Then you test the change on the model before you try it on the plant.
Fit failure and repair patterns from your stop history with ReliaStats®.
Learn more →Find the real bottleneck, size buffers and rank which stops are worth fixing.
Learn more →Discrete rate simulation for high-speed and bulk flow, the method Andrew Siprelle created in 1990.
Learn more →Network design, safety stock and tariff scenarios on the same engine.
Learn more →Used for manufacturing simulation, RAM analysis, operational due diligence and AI validation.
"We leveraged the model to recommend solutions that saved $21.7M in inventory carrying costs and reduced transit time by 19%."
"Instead of taking a snapshot, this is more like a video. Your ability to actually see the activity in action while the supply chain is running lets you understand impacts much better."
"The team went above and beyond the project scope, proactively brainstorming ways to make our project better."
Customers, the organizations we've built for, and 12 case studies →
ReliaSim is the main one. Each of the others is built for one kind of problem. Most have a free sandbox, and six run as public MCP servers inside Claude, ChatGPT or Cursor.
Andrew Siprelle created discrete rate simulation in 1990. The team has published at the Winter Simulation Conference since 1995, and customers have written papers of their own about the work.
ChiAha grew out of Simulation Dynamics, the firm Andrew Siprelle founded in the early 1990s. Today the team works with consulting partners from Technology Optimization & Management and our Doctors of Reliability, retired reliability engineers and R&D leaders with 32 to 36 years each in manufacturing.
We're based in Maryville, Tennessee.
A line that won’t hit its number, a network decision, a model that needs a new home. Tell us what you’re up against and a person will get back to you.