Open Source, Llamaindex, Gpt 4, Llm, OpenAI.
model in service_context prometheus_service_context = ServiceContext.from_defaults(llm=prometheus_llm) # CorrectnessEvaluator with Prometheus model prometheus_correctness_evaluator = CorrectnessEvaluator( service_context=prometheus_service_context, parser_function=parser_function,