perf: Add LRU caching to get_model_info for faster cost lookups#19606

AlexsanderHamir merged 1 commit intoBerriAI:mainBerriAI/litellm:mainfrom

ryan-crabbe:perf/cache-get-model-inforyan-crabbe/litellm:perf/cache-get-model-infoCopy head branch name to clipboard