This paper presents SuperGLUE a new benchmark containing a number of natural language understanding tasks. SuperGLUE is more challenging than the widely used benchmark GLUE. Pros • The paper is very well written. • The work is technically sound and very solid. • The work is original. • The work is likely to make big impact on NLP research. • Related work is described in details. Cons • There might be several shortcomings with the datasets and tasks. The reviewers liked the paper and made comments on the author response.