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Evo 2, an Open DNA Foundation Model, Debuts in Nature

Trained on 9.3 trillion nucleotides, the system models the genetic code across species with open access for research.

Overview

  • Arc Institute and collaborators released code, weights, training resources and an interpretability visualizer, with integration into NVIDIA's BioNeMo to support broad use.
  • The model was trained on more than 128,000 genomes and metagenomes, making it the largest fully open-source AI biology model reported to date.
  • A new StripedHyena 2 architecture and months of training on over 2,000 NVIDIA H100 GPUs enable reasoning over sequences up to one million nucleotides.
  • In benchmarking, Evo 2 exceeded 90% accuracy on classifying BRCA1 variants and produced genome-scale designs, including M. genitalium–inspired sequences, human mitochondrial DNA and a yeast chromosome.
  • Developers excluded human pathogens and added response safeguards, while external experts caution that AI-designed genomes still require extensive synthesis and validation before they can function as living systems.