 This paper assessed the latest version of the Modi's LAI-slash-FPR product, Collection 6 or C6, and found it to be more accurate than previous versions. It compared the C6 product against field measurements, other LAI-slash-FPR products, and climate variables. The results showed that the C6 product was more accurate than its predecessor, C5, with reduced root mean square error, RMSE, values of 0.66 and 0.80 for LAI and FPR respectively. Additionally, the C6 product agreed better with other LAI-slash-FPR products than C5 did. Furthermore, the C6 product had a higher correlation with climate variables such as temperature and precipitation than C5 did. Overall, the C6 product was found to be a significant improvement over its predecessors and can provide reliable biophysical information on the land surface when diagnosing climate-driven vegetation responses. This article was authored by Kai-Yen, Teijin Park, Guangjin Yan, and others.