---
library_name: transformers
tags:
  - biology
  - protein-language-model
  - marinfold
---

# MarinFold exp75 checkpoints

Final checkpoints from the MarinFold contacts-v1 1.5B tuning sweep tracked in
[Open-Athena/MarinFold#75](https://github.com/Open-Athena/MarinFold/issues/75).

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

| Run ID | Final step | Format | Repository path | GCS source |
|---|---:|---|---|---|
| `prot-exp75-cv1-1_5b-e8-lr1e-3-wd0p2-v1-bc3084` | 35679 | Hugging Face | [`hf/step-35679`](./prot-exp75-cv1-1_5b-e8-lr1e-3-wd0p2-v1-bc3084/hf/step-35679) | `gs://marin-us-east5/checkpoints/prot-exp75-cv1-1_5b-e8-lr1e-3-wd0p2-v1-bc3084/hf/step-35679/` |
| `prot-exp75-cv1-1_5b-e8-lr1e-3-wd0p2-v1-bc3084` | 35679 | Levanter | [`checkpoints/step-35679`](./prot-exp75-cv1-1_5b-e8-lr1e-3-wd0p2-v1-bc3084/checkpoints/step-35679) | `gs://marin-us-east5/checkpoints/prot-exp75-cv1-1_5b-e8-lr1e-3-wd0p2-v1-bc3084/checkpoints/step-35679/` |

W&B recorded this run as finished at step 35,679. The GCS run contains exactly
one permanent Levanter checkpoint, also at step 35,679.