Infinite Sum Modeling LLC (ISM or Infisum) is an economic modeling and consulting firm founded by Badri Narayanan Gopalakrishnan. It provides model-backed advice on macroeconomic analysis, trade policy, energy and climate policy, labor policy, and related areas to governments, NGOs, and companies. Services include development of Computable General Equilibrium (CGE) models, econometric models, financial models, specialized databases, training, economic forecasting, and consulting on data science, AI/ML, and disruptive technologies. HQ address listed as 21746 SE 3rd Pl, Sammamish, WA 98074.