“Until recently, Google-developed BERT solved a wide range of problems in NLP, including things like sentence classification, sentence space similarity, questions, and answers. Arditi asserts there’s a new contender that emerged from a research paper several weeks ago called XLnet. “It’s outperforming BERT on some new benchmarks,” he explained.” https://www.google.com/amp/s/venturebeat.com/2019/08/04/lyft-exec-riffs-on-ground-breaking-research-in-ai/amp/