chrF++ (Character n-gram F-score Plus Plus) is an important evaluation metric for machine translation tasks in natural language processing. chrF++ combines character-level n-grams (default order 6) with word-level n-grams (default order 2), making it more robust for morphologically rich languages and subword translation. It is typically reported as a percentage or a score between 0 and 1. This metric is widely used in relevant benchmarks and papers, and effectively reflects model performance along this dimension. Higher values are better.