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Model register·facebook

facebook/opt-125m

facebook/opt-125m is a facebook record on this register. The Hugging Face model API lists the pipeline tag as text-generation. Architectural context length (max_position_embeddings) is 2,048. The listed licence is other. The Hub repository was created on 11 May 2022, which is the release date this register uses.

Primary source: the Hugging Face model card for facebook/opt-125m. 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.

Organisationfacebook
ReleasedRepo creation date on Hugging Face11 May 2022
Last modified15 Sept 2023
Context lengthmax_position_embeddings — architectural maximum, not necessarily served2K 2,048
Licenceother
Pipeline / taskpipeline_tag on the Hugging Face model APItext-generation
Librarylibrary_name on the Hugging Face model APItransformers
Architectureopt
Layers12
Vocabulary50,272
DownloadsAt last check5.8m
Likes330
GatedNo

No parameter count is shown because the safetensors index was not available when this record was last checked.

How to run

The Hugging Face model API lists the library as transformers.

Load it from huggingface.co/facebook/opt-125m. 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 opt-125m released?
The Hugging Face repository was created on 11 May 2022, which is the date this register uses.
What is the context length of opt-125m?
2,048 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 opt-125m under?
The Hub card lists other.
Is opt-125m 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, libraryName. Checked 18 Oct 2026.
  • config.json — contextLength, layers, vocabSize, architecture. Checked 18 Oct 2026.

First recorded 24 Sept 2026, last checked 18 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/facebook/opt-125m.