evo-1.5-8k-base

evo-design/evo-1.5-8k-base

evo-1.5-8k-base is a machine learning model from evo-design. Use it for the machine learning task on the model card, and read the license before you ship it in a product. The card lists the license as apache-2.0.

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Model card

From the Hugging Face model README

Evo 1.5

About

Evo is a biological foundation model capable of long-context modeling and design.

Evo uses the StripedHyena architecture to enable modeling of sequences at a single-nucleotide, byte-level resolution with near-linear scaling of compute and memory relative to context length. Evo has 7 billion parameters and is trained on OpenGenome, a prokaryotic whole-genome dataset containing ~300 billion tokens.

Evo 1.5 is a version of Evo built off of the Evo 1 model pretrained at 8k context with training extended by 50% more training data, totaling 450 billion tokens.

Checkpoint Name	Description
`evo-1.5-8k-base`	A model pretrained with 8,192 context obtained by extending the pretraining of `evo-1-8k-base` to process 50% more training data.
`evo-1-8k-base`	A model pretrained with 8,192 context. We use this model as the base model for molecular-scale finetuning tasks.
`evo-1-131k-base`	A model pretrained with 131,072 context using `evo-1-8k-base` as the initialization. We use this model to reason about and generate sequences at the genome scale.
`evo-1-8k-crispr`	A model fine-tuned on `evo-1-8k-base` specifically on CRISPR-Cas systems. We use this model to generate Cas9/12/13 systems.
`evo-1-8k-transposon`	A model fine-tuned on `evo-1-8k-base` specifically on transposons. We use this to generate IS200/IS605.

How to use Evo

Example usage is provided in the standalone repo.

Cite

The Evo 1.5 citation is:

@article {merchant2024semantic,
    author = {Merchant, Aditi T and King, Samuel H and Nguyen, Eric and Hie, Brian L},
    title = {Semantic mining of functional de novo genes from a genomic language model},
    year = {2024},
    doi = {10.1101/2024.12.17.628962},
    publisher = {Cold Spring Harbor Laboratory},
    URL = {https://www.biorxiv.org/content/early/2024/12/18/2024.12.17.628962},
    journal = {bioRxiv}
}

The Evo 1 citation is:

@article{nguyen2024sequence,
   author = {Eric Nguyen and Michael Poli and Matthew G. Durrant and Brian Kang and Dhruva Katrekar and David B. Li and Liam J. Bartie and Armin W. Thomas and Samuel H. King and Garyk Brixi and Jeremy Sullivan and Madelena Y. Ng and Ashley Lewis and Aaron Lou and Stefano Ermon and Stephen A. Baccus and Tina Hernandez-Boussard and Christopher Ré and Patrick D. Hsu and Brian L. Hie },
   title = {Sequence modeling and design from molecular to genome scale with Evo},
   journal = {Science},
   volume = {386},
   number = {6723},
   pages = {eado9336},
   year = {2024},
   doi = {10.1126/science.ado9336},
   URL = {https://www.science.org/doi/abs/10.1126/science.ado9336},
}

Type: stripedhyena
License: apache-2.0
Created: Dec 7, 2024
Updated: Jul 12, 2025