Kairos-50M

Kairos-50M is the largest public checkpoint in the Kairos family currently hosted here, from the Ant Group and ShanghaiTech University Kairos release. It anchors the top of the Kairos size ladder and is the checkpoint to choose when you want the family's highest published capacity for zero-shot forecasting.

Architecturally it is the same adaptive encoder-decoder transformer as the smaller Kairos checkpoints: official sources describe an adaptive TSFM that varies tokenization granularity and instance-adaptive positional treatment based on the information density and temporal structure of each series. It is pretrained on the PreSTS corpus of 300B+ time points, and the larger parameter budget is meant to convert that broad pretraining into stronger coverage across heterogeneous domains.

On TSFM.ai reach for Kairos-50M when accuracy matters more than minimizing cost and the smaller Kairos-10M or Kairos-23M checkpoints fall short on your series. Drop down the ladder to Kairos-23M or Kairos-10M when throughput and a lighter serving footprint outweigh the extra capacity.