Benchmarking SOTA solutions is an interesting differentiator from Kaggle. Kaggle's community and scale is unparallelled though, which is actually what attracts very talented and competitive data scientists to its challenges.

AIcrowd(https://www.aicrowd.com/) in that sense is interesting, because it hosts research challenges like the ones that EvalAI does and it also hosts more attractive Kaggle-like challenges. It's also the most modular platform to accommodate unorthodox evaluation and submission formats.