From: nomic-ai <huggingface.co/nomic-ai> Newsgroups: alt.freeweights.embedSubject: modernbert-embed-base-unsupervised Date: 2026-11-15Commit: 69db317Signed: 2DC28CC7B26A283B ✓ Sentence similarity model with 149M parameters. Safetensors weights, 600 MB in all. Published by nomic-ai under Apache-2.0.
149M params 600 MB modernbert-embed-base-unsupervised safetensors permissive
Facts Params 149M Size 600 MB Formats safetensors Task sentence similarity License Apache-2.0 permissive
fw
$ fw get nomic-ai/modernbert-embed-base-unsupervised
# manifest sha256 61ec0d939a15… · 600 MB · 7 files
$ fw verify ./modernbert-embed-base-unsupervised nomic-ai/modernbert-embed-base-unsupervisedHosted (signed) nomic-ai/modernbert-embed-base-unsupervised Last check: 2026-11-15 03:47 UTC
Get help: custom fine-tune or private deploy. We review your setup before we quote.
Fine-tune of ModernBERT-base .
Works with
Runs with Ranked by fit to this model (safetensors), then by GitHub stars.
Overview
Size 600 MB
Weights 596 MB (safetensors)
Parameters 149M
Formats safetensors
Task sentence similarity
License Apache-2.0 (permissive)
Files 7, each with a sha256
Publisher nomic-ai
Added 2026-11-15
Section alt.freeweights.embed Lineage
Original release from the publisher.
Base model: answerdotai/ModernBERT-base
Where these bytes come from
Publisher at the pinned commit →You
Sources are tried in order. A file counts only when its size and sha256 match the manifest. Sources are checked when you ask for them, not on a timer.
Sources
Badge Host Last check Result huggingface.co 2026-11-15 03:47 UTC passed
Model card From the publisher at commit
69db317 . Shown as plain text with links; images open at the publisher.
ModernBERT-Embed-Unsupervised#
modernbert-embed-unsupervised is the unsupervised checkpoint trained with the contrastors library for 1 epoch over the 235M weakly-supervised contrastive pairs curated in Nomic Embed .
We suggest using moderbert-embed for embedding tasks.
The modernbert-unsupervised model performs similarly to the nomic-embed-text-v1_unsup model
Model Average (56) Classification (12) Clustering (11) Pair Classification (3) Reranking (4) Retrieval (15) STS (10) Overall nomic-embed-text-v1_unsup 59.9 71.2 42.5 83.7 55.0 48.0 80.8 30.7 modernbert-embed-unsupervised 60.03 72.11 44.34 82.78 55.0 47.05 80.33 31.2
Files 7 files · 600 MB Weights 596 MB (safetensors). Sizes and sha256 from the signed manifest.
Hide all 7 files with their sha256 File Size sha256 .gitattributes 1.52 KB 11ad7efa24975ee4b0c3c3a38ed18737f0658a5f75a0a96787b576a78a023361 README.md 435 KB 185a1ac12e1f3b82d5e2c1e99a271a52c0e41ac2d8aec61401c71f54f0ed38fb config.json 1.26 KB b52d559c28bf14a7f64001342fc4a3bf700400ac217e1387a6ba6c2423b2f510 model.safetensors 596 MB 6805f4b97bea9b4e9c31e38c7eb167b57df15cedee8dd64019b585ea2ac5320d special_tokens_map.json 694 B ea97ecdbcc73713039d8d64dbb05e3689495c96657fbd9a18f5bed381be81049 tokenizer.json 3.58 MB 6c8aaa9a542084f2457eab775d4eeb51f92a70c0fd9de28d5edb0ddec3c08d30 tokenizer_config.json 20.9 KB 9654072f7c873161814043cf08cb5ed72f71d0b935abcd4e267935cb34352c21
Versions Each time the pinned upstream commit or file list changed in this repo. Newest first.
Upstream commit Date Contents 69db3179cd pinned now 2026-11-15 03:47 UTC 7 files · 600 MB
Use it fw
$ fw get nomic-ai/modernbert-embed-base-unsupervised
# manifest sha256 61ec0d939a15… · 600 MB · 7 files
$ fw verify ./modernbert-embed-base-unsupervised nomic-ai/modernbert-embed-base-unsupervisedfw.py Checks the signature and every sha256, tries each source in order, resumes.
$ python3 fw.py get https://freeweights.allternit.com/manifests/nomic-ai/modernbert-embed-base-unsupervised.json --dir ./modernbert-embed-base-unsupervised
$ python3 fw.py verify ./modernbert-embed-base-unsupervised ./nomic-ai__modernbert-embed-base-unsupervised.jsonhf The Hugging Face CLI with one setting. Same repo id.
$ HF_ENDPOINT =https://freeweights.allternit.com hf download nomic-ai/modernbert-embed-base-unsupervised --revision 69db3179cdf0b6107bcf0996bca1fde565409636 --local-dir ./modernbert-embed-base-unsupervisedtransformers Load the weights in Python.
import os
os.environ["HF_ENDPOINT" ] = "https://freeweights.allternit.com"
from transformers import AutoModel, AutoTokenizer
tok = AutoTokenizer.from_pretrained("nomic-ai/modernbert-embed-base-unsupervised", revision="69db3179cdf0b6107bcf0996bca1fde565409636")
model = AutoModel.from_pretrained("nomic-ai/modernbert-embed-base-unsupervised", revision="69db3179cdf0b6107bcf0996bca1fde565409636", device_map="auto")License Name Apache License 2.0 Id Apache-2.0 Class Permissive Redistribution yes Listing Hosted (signed) Decided License as declared by the publisher. No person read it. 2026-11-15 Text in README.md Text sha256 185a1ac12e1f3b82d5e2c1e99a271a52c0e41ac2d8aec61401c71f54f0ed38fb Terms gate No extra terms beyond the license. Read the license text
Licenses are checked against the license table . A custom license passes only after a person reads it.
Provenance From: nomic-ai <huggingface.co/nomic-ai> Newsgroups: alt.freeweights.embedSubject: modernbert-embed-base-unsupervised Date: 2026-11-15Commit: 69db317Signed: 2DC28CC7B26A283B ✓
How to verify
$ curl -O https://freeweights.allternit.com/manifests/nomic-ai/modernbert-embed-base-unsupervised.json
$ curl -O https://freeweights.allternit.com/manifests/nomic-ai/modernbert-embed-base-unsupervised.json.minisig
$ minisign -Vm modernbert-embed-base-unsupervised.json -P RWQ7KGqyx4zCLXtUFOqvfv8L3g+8fpKJ1FsuxPyOYMF+4KufbUxKq1Oq
$ shasum -a 256 <file> # compare with the Files tab A manifest whose signature fails must be rejected. A file whose size or sha256 does not match must be discarded. Verify a download
Model tree No model in the catalog names this one as its parent.
Get it
$ HF_ENDPOINT =https://freeweights.allternit.com hf download nomic-ai/modernbert-embed-base-unsupervisedOpen in Freeweights Studio Pull, verify and run it in the Allternit app on Desktop, web or phone.
23M params 795 MB all-MiniLM-L6-v1 onnx openvino safetensors permissive Facts Params 23M Size 795 MB Formats onnx, openvino, safetensors Task sentence similarity License Apache-2.0 permissive flip From: sentence-transformers <huggingface.co/sentence-transformers> Subject: all-MiniLM-L6-v1 23M params 977 MB all-MiniLM-L6-v2 onnx openvino safetensors permissive Facts Params 23M Size 977 MB Formats onnx, openvino, safetensors Task sentence similarity License Apache-2.0 permissive flip From: <huggingface.co/unsloth> Subject: all-MiniLM-L6-v2 23M params 13.9 MB all-MiniLM-L6-v2-4bit safetensors permissive Facts Params 23M Size 13.9 MB Formats safetensors Task sentence similarity License Apache-2.0 permissive flip From: <huggingface.co/mlx-community> Subject: all-MiniLM-L6-v2-4bit 109M params 3.82 GB all-mpnet-base-v1 onnx openvino safetensors permissive Facts Params 109M Size 3.82 GB Formats onnx, openvino, safetensors Task sentence similarity License Apache-2.0 permissive flip From: sentence-transformers <huggingface.co/sentence-transformers> Subject: all-mpnet-base-v1 110M params 4.28 GB allenai-specter onnx openvino safetensors permissive Facts Params 110M Size 4.28 GB Formats onnx, openvino, safetensors Task sentence similarity License Apache-2.0 permissive flip From: sentence-transformers <huggingface.co/sentence-transformers> Subject: allenai-specter 109M params 4.70 GB bert-base-nli-max-tokens onnx openvino safetensors permissive Facts Params 109M Size 4.70 GB Formats onnx, openvino, safetensors Task sentence similarity License Apache-2.0 permissive flip From: sentence-transformers <huggingface.co/sentence-transformers> Subject: bert-base-nli-max-tokens
unsloth 
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