Poster Sun, Jun 7, 2026 • 10:45 AM – 12:45 PM PDT ExHall F

OlmoEarth: Stable Latent Image Modeling for Multimodal Earth Observation

Henry Herzog ⋅ Favyen Bastani ⋅ Yawen Zhang ⋅ Gabriel Tseng ⋅ Joseph Redmon ⋅ Hadrien Sablon ⋅ Ryan Park ⋅ Jacob Morrison ⋅ Alexandra Buraczynski ⋅ Karen Farley ⋅ Josh Hansen ⋅ Andrew Howe ⋅ Patrick Alan Johnson ⋅ Mark Otterlee ⋅ Ted Schmitt ⋅ Hunter Pitelka ⋅ Stephen Daspit ⋅ Rachel Ratner ⋅ Christopher Wilhelm ⋅ Sebastian Wood ⋅ Mike Jacobi ⋅ Hannah Kerner ⋅ Evan Shelhamer ⋅ Ali Farhadi ⋅ Ranjay Krishna ⋅ Patrick Beukema

Abstract

Earth observation data presents a unique challenge: it is spatial like images, sequential like video or text, and highly multimodal. We present Helios: a multimodal, spatio-temporal foundation model that employs a novel self-supervised learning formulation, masking strategy, and loss all designed for the Earth observation domain. Helios achieves state-of-the-art performance compared to 12 other foundation models across a variety of research benchmarks and real-world tasks from external partners. When evaluating embeddings Helios achieves the best performance on 15 out of 24 tasks, and with full fine-tuning it is the best on 19 of 29 tasks. We deploy Helios as the backbone of an end-to-end platform for data collection, labeling, training, and inference of Earth observation models. The Helios platform puts frontier foundation models and powerful data management tools into the hands of non-profits and NGOs working to solve the world's biggest problems. Helios source code, training data, and pre-trained weights are available at REDACTED.