answerdotai/ModernBERT-base
answerdotai/ModernBERT-base is a answerdotai record on this register. The Hugging Face model API lists the pipeline tag as fill-mask. The safetensors index gives an exact parameter count of 149,655,232. Architectural context length (max_position_embeddings) is 8,192. The listed licence is apache-2.0. The Hub repository was created on 11 Dec 2024, which is the release date this register uses.
Primary source: the Hugging Face model card for answerdotai/ModernBERT-base. Fields below come from that card, the Hub model API, and the repository’s own config.json when those files exist. A field we cannot source is omitted rather than guessed.
| Organisation | answerdotai |
|---|---|
| ReleasedRepo creation date on Hugging Face | 11 Dec 2024 |
| Last modified | 15 Jan 2025 |
| ParametersExact, from the safetensors index | 150M 149,655,232 |
| Context lengthmax_position_embeddings — architectural maximum, not necessarily served | 8K 8,192 |
| Licence | apache-2.0 |
| Pipeline / taskpipeline_tag on the Hugging Face model API | fill-mask |
| File formats | safetensors |
| Architecture | modernbert |
| Layers | 22 |
| Vocabulary | 50,368 |
| DownloadsAt last check | 4m |
| Likes | 1.1k |
| Gated | No |
How to run
Safetensors weights are on the Hugging Face repository. The parameter count on this page came from that index.
Load it from huggingface.co/answerdotai/ModernBERT-base. This page does not add install steps that the Hub files do not state.
Agent capabilities
This model publishes no chat template, so there is nothing to inspect. That is not evidence of missing support — many base models and some releases simply ship without one.
Questions this record can answer
- When was ModernBERT-base released?
- The Hugging Face repository was created on 11 Dec 2024, which is the date this register uses.
- How many parameters does ModernBERT-base have?
- The safetensors index gives 149,655,232 parameters, shown here as 150M. That figure is exact, not rounded.
- What is the context length of ModernBERT-base?
- 8,192 tokens. That is max_position_embeddings from the model's own config.json — the architectural maximum, not necessarily the context a provider serves.
- What licence is ModernBERT-base under?
- The Hub card lists apache-2.0.
- Is ModernBERT-base gated?
- No. The Hugging Face model API does not mark this repository as gated.
Where each field came from
- Hugging Face model API — releasedAt, lastModified, downloads, likes, task, license, gated, parameters. Checked 16 Oct 2026.
- config.json — contextLength, layers, vocabSize, architecture. Checked 16 Oct 2026.
First recorded 24 Sept 2026, last checked 16 Oct 2026. This record is compiled automatically from the sources above. Where a field is blank, we could not source it and have not guessed. Canonical repository: huggingface.co/answerdotai/ModernBERT-base.