alt.freeweights.vision / siglip2-giant-opt-patch16-256
From: google <huggingface.co/google>Newsgroups: alt.freeweights.visionSubject:

siglip2-giant-opt-patch16-256

Date: 2026-11-14Commit: 46d7129Signed: 2DC28CC7B26A283B ✓

Zero shot image classification model with 1.9B parameters. Safetensors weights, 7.52 GB in all. Published by google under Apache-2.0.

1.9B params7.52GBsiglip2-giant-opt-patch16-256safetensorspermissive
FactsParams1.9BSize7.52 GBFormatssafetensorsTaskzero shot image classificationLicenseApache-2.0From sourcepermissive
$ fw get google/siglip2-giant-opt-patch16-256
# manifest sha256 1017d031b2cd… · 7.52 GB · 11 files
$ fw verify ./siglip2-giant-opt-patch16-256 google/siglip2-giant-opt-patch16-256
From sourceHosted (signed)google/siglip2-giant-opt-patch16-256Last check: 2026-11-14 21:37 UTC

Get help: custom fine-tune or private deploy. We review your setup before we quote.

Works with

Runs with

Ranked by fit to this model (safetensors), then by GitHub stars.

Overview

Size
7.52 GB
Weights
7.49 GB (safetensors)
Parameters
1.9B
Formats
safetensors
Task
zero shot image classification
License
Apache-2.0 (permissive)
Files
11, each with a sha256
Publisher
google
Added
2026-11-14
Section
alt.freeweights.vision
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From sourcehuggingface.co2026-11-14 21:37 UTCpassed

Model card

From the publisher at commit 46d7129. Shown as plain text with links; images open at the publisher.

SigLIP 2 Giant#

SigLIP 2 extends the pretraining objective of SigLIP with prior, independently developed techniques into a unified recipe, for improved semantic understanding, localization, and dense features.

Intended uses#

You can use the raw model for tasks like zero-shot image classification and image-text retrieval, or as a vision encoder for VLMs (and other vision tasks).

Here is how to use this model to perform zero-shot image classification:

from transformers import pipeline

# load pipeline
ckpt = "google/siglip2-giant-opt-patch16-256"
image_classifier = pipeline(model=ckpt, task="zero-shot-image-classification")

# load image and candidate labels
url = "http://images.cocodataset.org/val2017/000000039769.jpg"
candidate_labels = ["2 cats", "a plane", "a remote"]

# run inference
outputs = image_classifier(image, candidate_labels)
print(outputs)

You can encode an image using the Vision Tower like so:

import torch
from transformers import AutoModel, AutoProcessor
from transformers.image_utils import load_image

# load the model and processor
ckpt = "google/siglip2-giant-opt-patch16-256"
model = AutoModel.from_pretrained(ckpt, device_map="auto").eval()
processor = AutoProcessor.from_pretrained(ckpt)

# load the image
image = load_image("https://huggingface.co/datasets/merve/coco/resolve/main/val2017/000000000285.jpg")
inputs = processor(images=[image], return_tensors="pt").to(model.device)

# run infernece
with torch.no_grad():
    image_embeddings = model.get_image_features(**inputs)    

print(image_embeddings.shape)

For more code examples, we refer to the siglip documentation.

Training procedure#

SigLIP 2 adds some clever training objectives on top of SigLIP:

  1. Decoder loss
  2. Global-local and masked prediction loss
  3. Aspect ratio and resolution adaptibility
Training data#

SigLIP 2 is pre-trained on the WebLI dataset (Chen et al., 2023).

Compute#

The model was trained on up to 2048 TPU-v5e chips.

Evaluation results#

Evaluation of SigLIP 2 is shown below (taken from the paper).

Image: Evaluation Table

BibTeX entry and citation info#
@misc{tschannen2025siglip2multilingualvisionlanguage,
      title={SigLIP 2: Multilingual Vision-Language Encoders with Improved Semantic Understanding, Localization, and Dense Features}, 
      author={Michael Tschannen and Alexey Gritsenko and Xiao Wang and Muhammad Ferjad Naeem and Ibrahim Alabdulmohsin and Nikhil Parthasarathy and Talfan Evans and Lucas Beyer and Ye Xia and Basil Mustafa and Olivier Hénaff and Jeremiah Harmsen and Andreas Steiner and Xiaohua Zhai},
      year={2025},
      eprint={2502.14786},
      archivePrefix={arXiv},
      primaryClass={cs.CV},
      url={https://arxiv.org/abs/2502.14786}, 
}

Files

11 files · 7.52 GBWeights 7.49 GB (safetensors). Sizes and sha256 from the signed manifest.
Hide all 11 files with their sha256
FileSizesha256
.gitattributes1.57 KB34448b82c17d60fec9b65b1f093c115ddbaadc04beb1b0140b6bfed2e012a930
README.md3.39 KBac43752c5bb71827d52835028e092938595cfa3c0145301cb231c4fb0d7ba1ce
config.json537 B68a043bad6cef6a36d3b43be565664cb2f8bc9181162b559e97aef65014ab265
model-00001-of-00002.safetensors4.99 GB0ca3ce5816388bb53458bac34e31c42a2a0f8b9a44ee17bdaf586d929727a825
model-00002-of-00002.safetensors2.49 GBdbbb979ee49f8b907e789379f2e3878cbbcf1a96d32928fe1b9057bcc98c9c1f
model.safetensors.index.json101 KB6bdb327dcc23d635ac79e2a1d7c5bf949e94dc390092b7ceaa43f920e20d9a34
preprocessor_config.json394 Bd14ba2ee3fd816f3de8abaddc31953565128eaf37c73ad4bed32101a98465aff
special_tokens_map.json636 Bbaec30ea10906f16adb8c18af7a34023002c1746542612b8b41c9f09e1351351
tokenizer.json34.4 MBcb9140fae3ac5122c972d37adf83e1248471a38147ad76f8215c8872c6fd8322
tokenizer.model4.24 MB61a7b147390c64585d6c3543dd6fc636906c9af3865a5548f27f31aee1d4c8e2
tokenizer_config.json47.2 KB14afe629fe4959b9e0d51e1852b8d9f7ad074f90a1a7125a4fcdd17f06e78fc8
VersionsEach time the pinned upstream commit or file list changed in this repo. Newest first.
Upstream commitDateContents
46d7129e1a pinned now manifest updated, same commit2026-11-14 21:37 UTC11 files · 7.52 GB
46d7129e1a2026-11-14 21:37 UTC11 files · 7.52 GB

Use it

$ fw get google/siglip2-giant-opt-patch16-256
# manifest sha256 1017d031b2cd… · 7.52 GB · 11 files
$ fw verify ./siglip2-giant-opt-patch16-256 google/siglip2-giant-opt-patch16-256
fw.pyChecks the signature and every sha256, tries each source in order, resumes.
$ python3 fw.py get https://freeweights.allternit.com/manifests/google/siglip2-giant-opt-patch16-256.json --dir ./siglip2-giant-opt-patch16-256 $ python3 fw.py verify ./siglip2-giant-opt-patch16-256 ./google__siglip2-giant-opt-patch16-256.json
hfThe Hugging Face CLI with one setting. Same repo id.
$ HF_ENDPOINT=https://freeweights.allternit.com hf download google/siglip2-giant-opt-patch16-256 --revision 46d7129e1aa1527cc5a44d86fb35250df3abf0aa --local-dir ./siglip2-giant-opt-patch16-256

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. 2026-11-14
Text in
README.md
Text sha256
ac43752c5bb71827d52835028e092938595cfa3c0145301cb231c4fb0d7ba1ce
Terms gate
No extra terms beyond the license.

Read the license text

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Provenance

From: google <huggingface.co/google>Newsgroups: alt.freeweights.visionSubject: siglip2-giant-opt-patch16-256Date: 2026-11-14Commit: 46d7129Signed: 2DC28CC7B26A283B ✓
Upstream
google/siglip2-giant-opt-patch16-256
Pinned commit
46d7129e1aa1527cc5a44d86fb35250df3abf0aa
Manifest
siglip2-giant-opt-patch16-256.json · .minisig
Manifest sha256
1017d031b2cd8730e9c6d39f5da177ed4b8723db59c411705780333d473ed689
Signature
minisign, Ed25519, key 2DC28CC7B26A283B
Created
2026-11-14 21:37 UTC
Generator
freeweights-manifest/0.1.0
Takedowns
None.

How to verify

$ curl -O https://freeweights.allternit.com/manifests/google/siglip2-giant-opt-patch16-256.json $ curl -O https://freeweights.allternit.com/manifests/google/siglip2-giant-opt-patch16-256.json.minisig $ minisign -Vm siglip2-giant-opt-patch16-256.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

1 model in the catalog name this one as their parent.

Quantizations
1
Get it
Download
$ HF_ENDPOINT=https://freeweights.allternit.com hf download google/siglip2-giant-opt-patch16-256
Open in Freeweights Studio

Pull, verify and run it in the Allternit app on Desktop, web or phone.

Signed manifest
minisign, key 2DC28CC7B26A283B. siglip2-giant-opt-patch16-256.json. Provenance. Takedown history: none.

Variants

1 quantized or adapter build of siglip2-giant-opt-patch16-256. Each has its own license check and page.

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