# facebook/esm2_t33_650M_UR50D

Model from Hugging Face for fill mask: facebook/esm2_t33_650M_UR50D · transformers

## Facts

- Type: LLM
- Task: fill-mask
- Framework: transformers
- License: mit — Permissive open license: commercial use, modification, and redistribution are permitted. (https://spdx.org/licenses/MIT.html)
- Source: https://huggingface.co/facebook/esm2_t33_650M_UR50D
- Hosting: hosted (5 files)
- Files: 5 hosted of 5 listed
- File counts: "listed" is every file in the source repository; only hosted files download from Hugging Bay, and the download plan lists the files it selects for one download, so its count can differ.
- Hosted here: 5 files, 2.61 GB
- Full repo upstream: 7.82 GB
- Recommended file: 2.61 GB · model.safetensors
- Parameters: 650M
- Download: https://huggingbay.xyz/artifact/hf-model-facebook-esm2-t33-650m-ur50d/files (download plan: https://huggingbay.xyz/api/artifacts/hf-model-facebook-esm2-t33-650m-ur50d/download-plan)
- Per-file SHA-256: available for 5 of 5 hosted files via https://huggingbay.xyz/api/artifacts/hf-model-facebook-esm2-t33-650m-ur50d/files?limit=100
- Run-ready: no (Hugging Bay has not certified a run path for this model; hosted bytes are downloadable and hash-checkable only)
- Peer-assisted fallbacks: 0 verified, 0 pending review
- Downloads: 2303429
- Stars: 82
- Card completeness: 89%

## Description

External Hugging Face catalog record for facebook/esm2_t33_650M_UR50D. Task: fill mask. Library: transformers. Popularity signal at import: 1,269,438 downloads and 82 likes.

## Model Card Facts

- Declared license: mit
- Pipeline: fill-mask
- Library: transformers
- Task categories: fill-mask
- File hints: 9 upstream file samples

## File Hints

- .gitattributes (1.4 KB)
- README.md (1.7 KB)
- config.json (724 B)
- model.safetensors (2.4 GB) LFS
- pytorch_model.bin (2.4 GB) LFS
- special_tokens_map.json (125 B)
- tf_model.h5 (2.4 GB) LFS
- tokenizer_config.json (95 B)
- vocab.txt (93 B)

## Quality Checklist

- Summary: passed
- Description: passed
- Model card metadata: passed
- License: passed
- Provenance: passed
- File inventory: passed
- Hosted bytes: passed
- Scan result: passed
- Manifest signature: passed

## Safety Notes

- Mirrored 1 selected Hugging Face file by configured-admin; 0 medium-risk weight files used explicit admin review; hashes computed from downloaded bytes and manifest signed.
- Reviewed large mirror worker mirrored 1 Hugging Face file by codex-reviewed-weight-apply; 1 medium-risk weight file used explicit admin review.
- Reviewed large mirror worker mirrored 3 low-risk Hugging Face files by reviewed-large-mirror-worker; medium/high-risk binary pickle-style files remain external pending separate review.
- Mirrored 5 selected Hugging Face files by configured-admin; hashes computed from downloaded bytes and manifest signed.
- External catalog metadata imported from Hugging Face public API on 2026-07-04T18:18:13.350Z.
- Open license detected as mit.
- Not a run kit: hosted, hash-checked bytes only; run readiness is not certified for this model yet.

## Actions

- Web: https://huggingbay.xyz/artifact/hf-model-facebook-esm2-t33-650m-ur50d
- Files API: https://huggingbay.xyz/api/artifacts/hf-model-facebook-esm2-t33-650m-ur50d/files?limit=100
- Metadata: https://huggingbay.xyz/api/artifacts/hf-model-facebook-esm2-t33-650m-ur50d/metadata.json
- Distribution: https://huggingbay.xyz/api/artifacts/hf-model-facebook-esm2-t33-650m-ur50d/distribution
- Manifest: https://huggingbay.xyz/api/manifests/hf-model-facebook-esm2-t33-650m-ur50d
- Download plan (per-file SHA-256 + signed download URLs): https://huggingbay.xyz/api/artifacts/hf-model-facebook-esm2-t33-650m-ur50d/download-plan
- Hosted download rows: https://huggingbay.xyz/api/downloadable-files?artifactId=hf-model-facebook-esm2-t33-650m-ur50d&limit=100
- Request mirror: not applicable.
- Submit peer fallback for review: POST https://huggingbay.xyz/api/artifacts/hf-model-facebook-esm2-t33-650m-ur50d/decentralized-fallbacks