From: allenai <huggingface.co/allenai>Newsgroups: alt.freeweights.olmoSubject:

OLMo-1B-hf

Date: 2026-11-14Commit: aee7752Signed: 2DC28CC7B26A283B ✓

Text generation model with 1.2B parameters. Safetensors weights, 4.71 GB in all. Published by allenai under Apache-2.0.

1.2B params4.71GBOLMo-1B-hfsafetensorspermissive
FactsParams1.2BSize4.71 GBFormatssafetensorsTasktext generationLicenseApache-2.0From sourcepermissive
$ fw get allenai/OLMo-1B-hf
# manifest sha256 1d02ae6d9d5e… · 4.71 GB · 8 files
$ fw verify ./OLMo-1B-hf allenai/OLMo-1B-hf
From sourceHosted (signed)allenai/OLMo-1B-hfLast check: 2026-11-14 21:13 UTC

Get help: custom fine-tune or private deploy. We review your setup before we quote.

Works with

Overview

Size
4.71 GB
Weights
4.71 GB (safetensors)
Parameters
1.2B
Formats
safetensors
Task
text generation
License
Apache-2.0 (permissive)
Files
8, each with a sha256
Publisher
allenai
Added
2026-11-14
Section
alt.freeweights.olmo
Lineage

Original release from the publisher.

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BadgeHostLast checkResult
From sourcehuggingface.co2026-11-14 21:13 UTCpassed

Model card

From the publisher at commit aee7752. Shown as plain text with links; images open at the publisher.

Image: OLMo Logo

Model Card for OLMo 1B#

OLMo is a series of Open Language Models designed to enable the science of language models. The OLMo models are trained on the Dolma dataset. We release all code, checkpoints, logs (coming soon), and details involved in training these models. This model has been converted from allenai/OLMo-1B for the Hugging Face Transformers format.

Model Details#

The core models released in this batch are the following:

SizeTraining TokensLayersHidden SizeAttention HeadsContext Length
OLMo 1B3 Trillion162048162048
OLMo 7B2.5 Trillion324096322048
OLMo 7B Twin 2T2 Trillion324096322048

We are releasing many checkpoints for these models, for every 1000 training steps. These have not yet been converted into Hugging Face Transformers format, but are available in allenai/OLMo-1B.

Model Description#
  • Developed by: Allen Institute for AI (AI2)
  • Supported by: Databricks, Kempner Institute for the Study of Natural and Artificial Intelligence at Harvard University, AMD, CSC (Lumi Supercomputer), UW
  • Model type: a Transformer style autoregressive language model.
  • Language(s) (NLP): English
  • License: The code and model are released under Apache 2.0.
  • Contact: Technical inquiries: olmo at allenai dot org. Press: press at allenai dot org
  • Date cutoff: Feb./March 2023 based on Dolma dataset version.
Model Sources#

Uses#

Inference#

Quickly get inference running with the following:

from transformers import AutoModelForCausalLM, AutoTokenizer
olmo = AutoModelForCausalLM.from_pretrained("allenai/OLMo-1B-hf")
tokenizer = AutoTokenizer.from_pretrained("allenai/OLMo-1B-hf")
message = ["Language modeling is"]
inputs = tokenizer(message, return_tensors='pt', return_token_type_ids=False)
# optional verifying cuda
# inputs = {k: v.to('cuda') for k,v in inputs.items()}
# olmo = olmo.to('cuda')
response = olmo.generate(**inputs, max_new_tokens=100, do_sample=True, top_k=50, top_p=0.95)
print(tokenizer.batch_decode(response, skip_special_tokens=True)[0])
>> 'Language modeling is the first step to build natural language generation...'

Alternatively, with the pipeline abstraction:

from transformers import pipeline
olmo_pipe = pipeline("text-generation", model="allenai/OLMo-1B-hf")
print(olmo_pipe("Language modeling is "))
>> 'Language modeling is a branch of natural language processing that aims to...'

Or, you can make this slightly faster by quantizing the model, e.g. AutoModelForCausalLM.from_pretrained("allenai/OLMo-1B-hf", torch_dtype=torch.float16, load_in_8bit=True) (requires bitsandbytes). The quantized model is more sensitive to typing / cuda, so it is recommended to pass the inputs as inputs.input_ids.to('cuda') to avoid potential issues.

Fine-tuning#

This model does not directly support our fine-tuning processes. Model fine-tuning can be done from the final checkpoint or many intermediate checkpoints of allenai/OLMo-1B.

Evaluation#

Core model results for the 7B model are found below.

Llama 7BLlama 2 7BFalcon 7BMPT 7BOLMo 7B (ours)
arc_challenge44.539.847.546.548.5
arc_easy57.057.770.470.565.4
boolq73.173.574.674.273.4
copa85.087.086.085.090
hellaswag74.574.575.977.676.4
openbookqa49.848.453.048.650.2
piqa76.376.478.577.378.4
sciq89.590.893.993.793.8
winogrande68.267.368.969.967.9
Core tasks average68.768.472.171.571.6
truthfulQA (MC2)33.938.534.03336.0
MMLU (5 shot MC)31.545.024.030.828.3
GSM8k (mixed eval.)10.0 (8shot CoT)12.0 (8shot CoT)4.0 (5 shot)4.5 (5 shot)8.5 (8shot CoT)
Full average57.859.359.259.359.8

And for the 1B model:

taskrandomStableLM 2 1.6b\*Pythia 1BTinyLlama 1.1BOLMo 1B (ours)
arc_challenge2543.8133.1134.7834.45
arc_easy2563.6850.1853.1658.07
boolq5076.661.864.660.7
copa5084727879
hellaswag2568.244.758.762.5
openbookqa2545.837.843.646.4
piqa507469.171.173.7
sciq2594.78690.588.1
winogrande5064.953.358.958.9
Average36.1168.4156.4461.4862.42

\*Unlike OLMo, Pythia, and TinyLlama, StabilityAI has not disclosed yet the data StableLM was trained on, making comparisons with other efforts challenging.

Model Details#

Data#

For training data details, please see the Dolma documentation.

Architecture#

OLMo 7B architecture with peer models for comparison.

OLMo 7BLlama 2 7BOpenLM 7BFalcon 7BPaLM 8B
d_model40964096409645444096
num heads3232327116
num layers3232323232
MLP ratio~8/3~8/3~8/344
LayerNorm typenon-parametric LNRMSNormparametric LNparametric LNparametric LN
pos embeddingsRoPERoPERoPERoPERoPE
attention variantfullGQAfullMQAMQA
biasesnonenonein LN onlyin LN onlynone
block typesequentialsequentialsequentialparallelparallel
activationSwiGLUSwiGLUSwiGLUGeLUSwiGLU
sequence length20484096204820482048
batch size (instances)2160102420482304512
batch size (tokens)~4M~4M~4M~4M~1M
weight tyingnonononoyes
Hyperparameters#

AdamW optimizer parameters are shown below.

SizePeak LRBetasEpsilonWeight Decay
1B4.0E-4(0.9, 0.95)1.0E-50.1
7B3.0E-4(0.9, 0.99)1.0E-50.1

Optimizer settings comparison with peer models.

OLMo 7BLlama 2 7BOpenLM 7BFalcon 7B
warmup steps5000200020001000
peak LR3.0E-043.0E-043.0E-046.0E-04
minimum LR3.0E-053.0E-053.0E-051.2E-05
weight decay0.10.10.10.1
beta10.90.90.90.99
beta20.950.950.950.999
epsilon1.0E-051.0E-051.0E-051.0E-05
LR schedulelinearcosinecosinecosine
gradient clippingglobal 1.0global 1.0global 1.0global 1.0
gradient reduce dtypeFP32FP32FP32BF16
optimizer state dtypeFP32most likely FP32FP32FP32

Environmental Impact#

OLMo 7B variants were either trained on MI250X GPUs at the LUMI supercomputer, or A100-40GB GPUs provided by MosaicML. A summary of the environmental impact. Further details are available in the paper.

GPU TypePower Consumption From GPUsCarbon Intensity (kg CO₂e/KWh)Carbon Emissions (tCO₂eq)
OLMo 7B TwinMI250X (LUMI supercomputer)135 MWh0*0*
OLMo 7BA100-40GB (MosaicML)104 MWh0.65675.05

Bias, Risks, and Limitations#

Like any base language model or fine-tuned model without safety filtering, it is relatively easy for a user to prompt these models to generate harmful and generally sensitive content. Such content can also be produced unintentionally, especially in the case of bias, so we recommend users consider the risks of applications of this technology.

Otherwise, many facts from OLMo or any LLM will often not be true, so they should be checked.

Citation#

BibTeX:

@article{Groeneveld2023OLMo,
  title={OLMo: Accelerating the Science of Language Models},
  author={Groeneveld, Dirk and Beltagy, Iz and Walsh, Pete and Bhagia, Akshita and Kinney, Rodney and Tafjord, Oyvind and Jha, Ananya Harsh and Ivison, Hamish and Magnusson, Ian and Wang, Yizhong and Arora, Shane and Atkinson, David and Authur, Russell and Chandu, Khyathi and Cohan, Arman and Dumas, Jennifer and Elazar, Yanai and Gu, Yuling and Hessel, Jack and Khot, Tushar and Merrill, William and Morrison, Jacob and Muennighoff, Niklas and Naik, Aakanksha and Nam, Crystal and Peters, Matthew E. and Pyatkin, Valentina and Ravichander, Abhilasha and Schwenk, Dustin and Shah, Saurabh and Smith, Will and Strubell, Emma and Subramani, Nishant and Wortsman, Mitchell and Dasigi, Pradeep and Lambert, Nathan and Richardson, Kyle and Zettlemoyer, Luke and Dodge, Jesse and Lo, Kyle and Soldaini, Luca and Smith, Noah A. and Hajishirzi, Hannaneh},
  journal={Preprint},
  year={2024}
}

APA:

Groeneveld, D., Beltagy, I., Walsh, P., Bhagia, A., Kinney, R., Tafjord, O., Jha, A., Ivison, H., Magnusson, I., Wang, Y., Arora, S., Atkinson, D., Authur, R., Chandu, K., Cohan, A., Dumas, J., Elazar, Y., Gu, Y., Hessel, J., Khot, T., Merrill, W., Morrison, J., Muennighoff, N., Naik, A., Nam, C., Peters, M., Pyatkin, V., Ravichander, A., Schwenk, D., Shah, S., Smith, W., Strubell, E., Subramani, N., Wortsman, M., Dasigi, P., Lambert, N., Richardson, K., Dodge, J., Zettlemoyer, L., Lo, K., Soldaini, L., Smith, N., & Hajishirzi, H. (2024). OLMo: Accelerating the Science of Language Models. Preprint.

Model Card Contact#

For errors in this model card, contact Nathan, Akshita or Shane, {nathanl, akshitab, shanea} at allenai dot org.

Files

8 files · 4.71 GBWeights 4.71 GB (safetensors). Sizes and sha256 from the signed manifest.
Hide all 8 files with their sha256
FileSizesha256
.gitattributes1.52 KB11ad7efa24975ee4b0c3c3a38ed18737f0658a5f75a0a96787b576a78a023361
README.md15.7 KB2662a3950c8c93ce2b5fe313967939b76f13c52ac56e45486b62422a35e119c5
config.json632 B6f7e503641d4064e95ab9f84a5ef39da92d232f4a364985f9df7dade8f3d3e65
generation_config.json116 B6cf1d8a9e7f1fff5f1c957c4471e95216e0789962ea553345e113b7588582dea
model.safetensors4.71 GBe9ba1a06a5619b3cc65c8efe8f295e5e275ea2d6ca6aba6aa75a8c32349b70c3
special_tokens_map.json65 Bb77491e270c6fcc5b2ecf22370f7318a6a18d3cabea09ba7bab92e9bf12656c2
tokenizer.json2.12 MBf6be7e4f0ee192755599bb2756cc57a44bd0456fe8c2aac7caab42628ca786d5
tokenizer_config.json5.37 KB78a839c7851f14f9fb30e664c2b46166dc0628f2900679e5ec160656f702edff
VersionsEach time the pinned upstream commit or file list changed in this repo. Newest first.
Upstream commitDateContents
aee7752d9c pinned now manifest updated, same commit2026-11-14 21:13 UTC8 files · 4.71 GB
aee7752d9c2026-11-14 21:13 UTC8 files · 4.71 GB

Use it

$ fw get allenai/OLMo-1B-hf
# manifest sha256 1d02ae6d9d5e… · 4.71 GB · 8 files
$ fw verify ./OLMo-1B-hf allenai/OLMo-1B-hf
fw.pyChecks the signature and every sha256, tries each source in order, resumes.
$ python3 fw.py get https://freeweights.allternit.com/manifests/allenai/OLMo-1B-hf.json --dir ./OLMo-1B-hf $ python3 fw.py verify ./OLMo-1B-hf ./allenai__OLMo-1B-hf.json
hfThe Hugging Face CLI with one setting. Same repo id.
$ HF_ENDPOINT=https://freeweights.allternit.com hf download allenai/OLMo-1B-hf --revision aee7752d9c08ee4775e9b0091426d8410e8f6a89 --local-dir ./OLMo-1B-hf
transformersLoad the weights in Python.
import os os.environ["HF_ENDPOINT"] = "https://freeweights.allternit.com" from transformers import AutoModelForCausalLM, AutoTokenizer tok = AutoTokenizer.from_pretrained("allenai/OLMo-1B-hf", revision="aee7752d9c08ee4775e9b0091426d8410e8f6a89") model = AutoModelForCausalLM.from_pretrained("allenai/OLMo-1B-hf", revision="aee7752d9c08ee4775e9b0091426d8410e8f6a89", device_map="auto")
vLLMServe an OpenAI-compatible API.
$ HF_ENDPOINT=https://freeweights.allternit.com vllm serve allenai/OLMo-1B-hf --revision aee7752d9c08ee4775e9b0091426d8410e8f6a89

License

Name
Apache License 2.0
Id
Apache-2.0
Class
Permissive
Redistribution
yes
Listing
Hosted (signed)
Decided
License as declared by the publisher. No person read it. 2026-11-14
Text in
README.md
Text sha256
2662a3950c8c93ce2b5fe313967939b76f13c52ac56e45486b62422a35e119c5
Terms gate
No extra terms beyond the license.

Read the license text

Licenses are checked against the license table. A custom license passes only after a person reads it.

Provenance

From: allenai <huggingface.co/allenai>Newsgroups: alt.freeweights.olmoSubject: OLMo-1B-hfDate: 2026-11-14Commit: aee7752Signed: 2DC28CC7B26A283B ✓
Upstream
allenai/OLMo-1B-hf
Pinned commit
aee7752d9c08ee4775e9b0091426d8410e8f6a89
Manifest
OLMo-1B-hf.json · .minisig
Manifest sha256
1d02ae6d9d5ed1eb5b31c483c5126e493e782fdc4df398a829c02e76507ffbd7
Signature
minisign, Ed25519, key 2DC28CC7B26A283B
Created
2026-11-14 21:13 UTC
Generator
freeweights-manifest/0.1.0
Takedowns
None.

How to verify

$ curl -O https://freeweights.allternit.com/manifests/allenai/OLMo-1B-hf.json $ curl -O https://freeweights.allternit.com/manifests/allenai/OLMo-1B-hf.json.minisig $ minisign -Vm OLMo-1B-hf.json -P RWQ7KGqyx4zCLXtUFOqvfv8L3g+8fpKJ1FsuxPyOYMF+4KufbUxKq1Oq $ shasum -a 256 <file> # compare with the Files tab

A manifest whose signature fails must be rejected. A file whose size or sha256 does not match must be discarded. Verify a download

Model tree

1 model in the catalog name this one as their parent.

Quantizations
1
Quantizations 1
Get it
Download
$ HF_ENDPOINT=https://freeweights.allternit.com hf download allenai/OLMo-1B-hf
Open in Freeweights Studio

Pull, verify and run it in the Allternit app on Desktop, web or phone.

Signed manifest
minisign, key 2DC28CC7B26A283B. OLMo-1B-hf.json. Provenance. Takedown history: none.

Variants

1 quantized or adapter build of OLMo-1B-hf. Each has its own license check and page.

From: bartowski <huggingface.co/bartowski>Subject: allenai_Olmo-3-7B-Instruct-GGUF
From: bartowski <huggingface.co/bartowski>Subject: allenai_Olmo-3-7B-Think-GGUF
From: bartowski <huggingface.co/bartowski>Subject: allenai_Olmo-3.1-32B-Instruct-GGUF
From: bartowski <huggingface.co/bartowski>Subject: allenai_Olmo-3.1-32B-Think-GGUF
From: bartowski <huggingface.co/bartowski>Subject: allenai_olmOCR-2-7B-1025-GGUF
From: bartowski <huggingface.co/bartowski>Subject: allenai_olmOCR-7B-0225-preview-GGUF