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Open-weight model · Text generation

opt-125m

by AI at Meta facebook/opt-125m

OPT was first introduced in Open Pre-trained Transformer Language Models and first released in metaseq's repository on May 3rd 2022 by Meta AI. Disclaimer: The team releasing OPT wrote an official model card, which is available in Appendix D of the paper.

Parameters
Context2,048
Weights751.7 MB
Licenseother
AccessOpen weights
Monthly Downloads7.5M

SAVRN's Notes on opt-125m

We list opt-125m without a runs_on line, so sizing comes from the files: 752 MB of float16 weights in a 753 MB download of 12 files, which fits anywhere. AI at Meta first released this causal text-generation model in the metaseq repository on May 3, 2022, with a 2,048-token context, pretrained mostly on English plus some non-English text via CommonCrawl. Hardware is whatever you already have; the question is what you want from a 2022 generator that draws 7.5 million downloads a month.

The license field reads other, with no summary on this page, so we cannot say whether commercial use is permitted. Read the publisher's license text before this touches a product. Second check is age: last updated September 15, 2023, shipped in PyTorch, JAX and TensorFlow with no safetensors copy listed. The two papers behind it, arXiv:2205.01068 and arXiv:2005.14165, hold the training details the page does not.

Model Card

OPT was first introduced in Open Pre-trained Transformer Language Models and first released in metaseq's repository on May 3rd 2022 by Meta AI. Disclaimer: The team releasing OPT wrote an official model card, which is available in Appendix D of the paper. Content from this model card has been written by the Hugging Face team. To quote the first two paragraphs of the official paper OPT was predominantly pretrained with English text, but a small amount of non-English data is still present within the training corpus via CommonCrawl. The model was pretrained using a causal language modeling (CLM) objective. OPT belongs to the same family of decoder-only models like GPT-3. As such, it was…

Excerpt from the card by AI at Meta, licensed other.

Configuration

Architecture
OPTForCausalLM
Context length (tokens)
2,048
Layers
12
Hidden size
768
Attention heads
12
Vocabulary size
50,272
Stored precision
float16
Model type
opt

Identity and Version

Repository
facebook/opt-125m
Publisher
AI at Meta
Task
Text generation
Modality
Text
Library
transformers
Parameters
Not stated by the source
Languages
en
Revision
27dcfa74d334bc871f3234de431e71c6eeba5dd6
First published
2022-05-11
Last updated
2023-09-15

Files and Weights

12 files, 753.1 MB in total. The weights are 3 files totalling 751.7 MB in bin, h5, msgpack.

Weights3 files · 751.7 MB
Configuration3 files · 1.2 KB
Tokenizer3 files · 1.4 MB
Documentation2 files · 18.2 KB
Repository1 file · 1.2 KB
Every file
FileTypeSizeSHA-256
flax_model.msgpackWeights250.5 MB 61c60ec52ed4
pytorch_model.binWeights250.5 MB 2d74da661513
tf_model.h5Weights250.7 MB db7090b0c8b3
config.jsonConfiguration651 B
generation_config.jsonConfiguration137 B
special_tokens_map.jsonConfiguration441 B
LICENSE.mdDocumentation11.1 KB
README.mdDocumentation7.1 KB
.gitattributesRepository1.2 KB
merges.txtTokenizer456.3 KB
tokenizer_config.jsonTokenizer685 B
vocab.jsonTokenizer898.8 KB

License and Download

License
other
Access
Open weights, no gate
Download size
751.7 MB
Download from AI at Meta

Released by AI at Meta through its official repository on Hugging Face.

Built From

  • Described by arXiv:2005.14165
  • Described by arXiv:2205.01068

Memory Requirements

PrecisionWeights in memory
As published751.7 MB

Weights only, from the published parameter count; the key-value cache and runtime add to this.

Questions About opt-125m

What license is opt-125m released under?

other, as its publisher declares it. Read the license text before commercial use.

What is opt-125m's context length?

2,048 tokens, from the maximum position embeddings in its published configuration.

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