SingleStore offers a native API for MongoDB called SingleStore Kai that enables seamless and performant execution of aggregation queries without any application code changes or ETL data movement. This allows developers to take advantage of SingleStore's multi-model database capabilities, which support strong aggregations on JSON of any kind, including seekable JSON, sparse JSON compression, and vectorized processing for $count, $match, and $lookup operations. By using SingleStore Kai, users can see significant improvements in performance compared to MongoDB, with 142x, 82x, and 299x improvements seen for $count, $match, and $group queries respectively.