AI Potluck
Back to Gap Map Model components / Embeddings & retrieval models

ModernVBERT

ModernVBERT
open source / Overall score: 3.0

ModernVBERT is a 250M-parameter vision-language encoder built for document retrieval rather than repurposed from a generative decoder. The paper walks the whole training pipeline - attention masking, image resolution, modality-alignment data regime, late-interaction contrastive objective - and the resulting ColModernVBERT checkpoint matches visual-document retrievers ten times its size while running query encoding on CPU. The suite also ships a bi-encoder variant, the aligned base model and the intermediate checkpoints.

From the same authors as ColPali - Teiletche, Mace, Conti, Loison, Viaud, Colombo and Faysse - and released under its own ModernVBERT Hub org rather than under vidore. The colpali-engine branch that loads it was not merged at the time of writing, which the card says outright.

Openness

5 high confidence
5.0
weights
open(ungated MIT checkpoints on the ModernVBERT org - colmodernvbert, bimodernvbert, modernvbert-embed and the base model)
data
open(the paper states models, code and data are released, and the org publishes the NatCap modality-alignment corpus alongside the public document-retrieval sets it trains on)
code
open(the card releases the training codebase under MIT, and the paper releases intermediate checkpoints with it)
checkpoints
open(ModernVBERT/ablation_checkpoints, the intermediate and ablation runs behind the paper)
license
MIT(OSI)

MIT covers the architecture, weights and training codebase, the data is published in the same org, and the intermediate checkpoints are kept rather than discarded. The training corpus is a mixture of public sets plus the released NatCap corpus rather than one named dataset, but nothing here is withheld.

Adoption

3 high confidence
3.0

Adoption is measured as Hugging Face downloads for ColModernVBERT, which accounts for effectively the whole family since the bi-encoder, base and ablation repos draw only single digits.

Capability

3 high confidence
3.0

ModernVBERT's published numbers are credible and it leads every other sub-1B model on the same table, but the read here is about narrow scope, not dated evidence: it is English-only at 250M parameters and trails ColPali by roughly a tier on the same benchmark.

  • https://arxiv.org/abs/2510.01149 recorded 2026-09-11

    'a compact 250M-parameter vision-language encoder that outperforms recent models up to 10 times larger when fine-tuned on document retrieval tasks'.

  • https://arxiv.org/html/2510.01149v1 recorded 2026-09-11

    Table 3, ViDoRe Leaderboard, nDCG@5: ColModernVBERT (ours) 0.25B 81.2 / 56.0 / 68.6 at .032s CPU query latency; ColPali 2.92B 81.6 / 56.8 / 69.2; ColQwen2.5 3.75B 89.5 / 61.5 / 75.5; ColFlor 0.17B 68.8 / 43.0 / 55.9.

Verified 2026-09-11, except some scores, still awaiting re-confirmation