Recent work has focused on predicting neural activity from behavior (encoding) or predicting behavior from neural activity (decoding).A new multimodal, multi-task model called NEDS enables simultaneous Neural Encoding and Decoding at Scale.NEDS achieves state-of-the-art performance for both encoding and decoding when pretrained on multi-animal data.NEDS's learned embeddings are highly predictive of the brain regions in each recording without explicit training.