Project AURIONAI Use-Cases Research & Innovation
language encoder

mmBERT small

mmBERT small, a checkpoint of the mmBERT family. Modern multilingual encoder trained on text in over 1,800 languages, a ModernBERT-style successor to XLM-R for classification and retrieval.

Johns Hopkins University (CLSP)
Levelvariant
Classlanguage encoder
Parametersnot in the notes
Contextnot in the notes
Released21 Aug 2025
Opennessopen weights permissive
Runs onnot in the notes
Statusactive

R&D Topics

Identity

Developer
Johns Hopkins University (CLSP)
Family
mmBERT
Released
21 Aug 2025 sourcesregistry date
Weights published
–
Record checked
12 Oct 2026
Where this comes from
Developer and dates from the research notes. Release date is the vendor's public announcement; weights date is when open weights were published.

Architecture and Size

Architecture
dense transformer
Total parameters
– sources
Active parameters
–
Checkpoint parameters
–
Context length
not in the notes
Input
text
Output
text
Where this comes from
Parameter counts as the developer states them. Where the checkpoint holds a different total, both are shown (register A16).

Openness and Access

Openness
open weights permissive
Licence
MIT License sources
Access routes
open weights download
Where this comes from
The licence file governs over registry tags and aggregator labels.

Deployment

Runs on
not in the notes
Footprint
not in the notes
Runtimes
not in the notes
Where this comes from
Deployment tiers and runtimes as named in the notes. Footprint is the notes' figure, not a measurement by AURION.

Indonesia

Indonesian support
listed by developer
Regional languages
Acehnese, Balinese, Banjar, Buginese, Javanese, Madurese, Minangkabau, Sundanese, Malay
Jakarta hosting
unknown
Languages
Model card lists 1811 languages, including Indonesian
Where this comes from
Indonesia fields are carried on every model; unknown is an allowed value.

Benchmark Results

The notes record no benchmark result for this model.

Lineage

The notes record no lineage for this model.

Industry Use Cases

No industry use case links this model.

Sources

  1. huggingface.co/jhu-clsp/mmBERT-small https://huggingface.co/jhu-clsp/mmBERT-small
  2. huggingface.co/api/models?pipeline_tag=fill-mask&sort=likes&... https://huggingface.co/api/models?pipeline_tag=fill-mask&sort=likes&limit=50

To cite this page: Project AURION, AI Use-Cases Research & Innovation, "mmBERT Small", https://aurion.semai.id/models/jhu-clsp-mmbert-small/, records of October 2026.