Hi! I wanted to share LangCheck, an open source toolkit to evaluate LLM applications (GitHub,Quickstart).It currently supports English, Japanese, Chinese, and German text, and more languages soon – contributions welcome!Core functionality:langcheck.metrics– metrics to evaluate quality & structure of LLM-generated textlangcheck.plot– interactive visualizations of text qualitylangcheck.augment– text augmentations to perturb prompts, references, etc (coming soon)Super open to feedback & curious how other people think about evaluation for LLM apps.