marinfold-exp166

open-athena/marinfold-exp166

marinfold-exp166 is a machine learning model from open-athena. Use it for the machine learning task on the model card, and read the license before you ship it in a product. It is set up for transformers.

Final checkpoints from the MarinFold contacts-v1 1.5B amino-acid augmentation experiment tracked in Open-Athena/MarinFold166. Loss is eval/tokenized/contacts-v1-val/loss.

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Updated Jul 31, 2026

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At a glance

Library: transformers
Access: Public
Created: Jul 31, 2026
Updated: Jul 31, 2026
SHA: 3909027e

Model card

From the Hugging Face model README

MarinFold exp166 checkpoints

Final checkpoints from the MarinFold contacts-v1 1.5B amino-acid augmentation experiment tracked in Open-Athena/MarinFold#166. Loss is eval/tokenized/contacts-v1-val/loss.

Both checkpoint formats are retained:

hf/ contains a Qwen3ForCausalLM Hugging Face safetensors export with the contacts-v1 tokenizer colocated with the weights.
checkpoints/ contains the original Levanter OCDBT checkpoint for training restart or re-export.

Checkpoint inventory

Epochs	Initialization	Selection	W&B run	Loss	Step	Repository paths	Full GCS sources
8	exp117 checkpoint	Final	`prot-exp166-cv1-aaaug-1_5b-e8-lr3p162e-3-wd0p1-bs128-exp117-init-us-east1`	2.664179	35,679	Levanter: `checkpoints/step-35679`<br>HF: `hf/step-35679`	Levanter: `gs://marin-us-east1/prot-exp166-cv1-aaaug-1_5b-e8-lr3p162e-3-wd0p1-bs128-exp117-init-us-east1/2026.07.27.1/checkpoints/step-35679/`<br>HF: `gs://marin-us-east1/prot-exp166-cv1-aaaug-1_5b-e8-lr3p162e-3-wd0p1-bs128-exp117-init-us-east1/2026.07.27.1/hf/step-35679/`

The training target was 35,680 steps; Levanter's zero-indexed final checkpoint is step-35679. The dated GCS layout component is intentionally omitted from repository paths.

Library: transformers
Created: Jul 31, 2026
Updated: Jul 31, 2026