Abstract: Example solutions for using natural language (NL) for complex optimization problems in operations research (OR) include: receiving a user input for an OR problem; generating an NL prompt based on at least the user input, the NL prompt comprising an objective, a variable, input data, and a constraint; using a large language model (LLM), generating a domain-specific language (DSL) passage based on at least the NL prompt, the DSL passage representing the OR problem; transpiling the DSL passage into a programming language passage; solving the OR problem, wherein solving the OR problem comprises executing the programming language passage to generate a problem solution; and generating a report of the problem solution.