I was emailed by a journalist writing an article about time series foundation models. Here is my response. While the questions were about a specific new transformer model, the comments are more widely applicable, so I’ve edited my answer to be more generic.
As background, I would point you to my online forecasting textbook where we have a chapter on foundation models (Hyndman et al., 2026). Another excellent reference on this topic is Christoph Bergmeir’s …