Model reference · open weights

vit_base_patch16_siglip_gap_512.v2_webli

Available as managed deployment Embeddings timm Image embed 1 variants 755 dl/mo

vit_base_patch16_siglip_gap_512.v2_webli is an open-weight embedding model from timm. AxForge deploys and operates it for you on dedicated EU-owned hardware — with the licence handled where one is required.

Available as managed deployment — configured and operated for you on dedicated EU hardware, quoted per deployment.

What it is

Released bytimm
TypeEmbedding models
TaskImage embed
Parameters (lead)86M
Runs withtimm
Released2025-02-21
Popularity755 downloads / month
LicenceOpen weights

About

What vit_base_patch16_siglip_gap_512.v2_webli is

A SigLIP 2 ViT (image encoder only) for timm. Equivalent to image tower from https://huggingface.co/timm/ViT-B-16-SigLIP2-512. This gap variant uses global average pooling and has the attention pooling head removed.

Read the full model card

Model Details

  • Dataset: webli
  • Papers:
    • SigLIP 2: Multilingual Vision-Language Encoders with Improved Semantic Understanding, Localization, and Dense Features: https://arxiv.org/abs/2502.14786
    • Sigmoid Loss for Language Image Pre-Training: https://arxiv.org/abs/2303.15343

Citation

@article{tschannen2025siglip,
          title={SigLIP 2: Multilingual Vision-Language Encoders with Improved Semantic Understanding, Localization, and Dense Features},
          author={Tschannen, Michael and Gritsenko, Alexey and Wang, Xiao and Naeem, Muhammad Ferjad and Alabdulmohsin, Ibrahim and Parthasarathy, Nikhil and Evans, Talfan and Beyer, Lucas and Xia, Ye and Mustafa, Basil and H'enaff, Olivier and Harmsen, Jeremiah and Steiner, Andreas and Zhai, Xiaohua},
          year={2025},
          journal={arXiv preprint arXiv:2502.14786}
        }

@inproceedings{zhai2023sigmoid,
          title={Sigmoid loss for language image pre-training},
          author={Zhai, Xiaohua and Mustafa, Basil and Kolesnikov, Alexander and Beyer, Lucas},
          booktitle={Proceedings of the IEEE/CVF International Conference on Computer Vision},
          pages={11975--11986},
          year={2023}
        }

From the published model card. Full card on the HuggingFace links in the sidebar.

How it works

How embedding models work

Your textsentence / documentEncodermaps meaningVectorlist of numbersAn embedding model turns text into a vector, so similar meanings sit close together — the basis of search and RAG.

Using it via the API

Call it like any OpenAI endpoint

Once AxForge deploys vit-base-patch16-siglip-gap-512-v2-webli for you, it answers on the OpenAI-compatible API — the same base URL and keys as every other model. (vit-base-patch16-siglip-gap-512-v2-webli below is illustrative; you get the exact model name on deployment.)

$ curl -sS https://api.axforge.ai/v1/embeddings \
  -H "Authorization: Bearer $AXFORGE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"vit-base-patch16-siglip-gap-512-v2-webli","input":"text to embed"}'

Create an account — your API key is available in the console. 3M free tokens every 30 days with every new account.

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