alt.freeweights.olmo / OLMo-2-0425-1B-early-training
From: allenai <huggingface.co/allenai>Newsgroups: alt.freeweights.olmoSubject:

OLMo-2-0425-1B-early-training

Date: 2026-11-15Commit: c70db05Signed: 2DC28CC7B26A283B ✓

Text generation model with 1.5B parameters. Safetensors weights, 5.95 GB in all. Published by allenai under Apache-2.0.

1.5B params5.95GBOLMo-2-0425-1B-early-trainingsafetensorspermissive
FactsParams1.5BSize5.95 GBFormatssafetensorsTasktext generationLicenseApache-2.0From sourcepermissive
$ fw get allenai/OLMo-2-0425-1B-early-training
# manifest sha256 25c5b17662b0… · 5.95 GB · 12 files
$ fw verify ./OLMo-2-0425-1B-early-training allenai/OLMo-2-0425-1B-early-training
From sourceHosted (signed)allenai/OLMo-2-0425-1B-early-trainingLast check: 2026-11-15 03:29 UTC

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

Works with

Overview

Size
5.95 GB
Weights
5.94 GB (safetensors)
Parameters
1.5B
Formats
safetensors
Task
text generation
License
Apache-2.0 (permissive)
Files
12, each with a sha256
Publisher
allenai
Added
2026-11-15
Section
alt.freeweights.olmo
Lineage

Original release from the publisher.

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From sourcehuggingface.co2026-11-15 03:29 UTCpassed

Model card

From the publisher at commit c70db05. Shown as plain text with links; images open at the publisher.

Model Details#

Image: OLMo Logo


Model Card for OLMo 2 1B Early Training Checkpoints#

We introduce OLMo 2 1B Early Training checkpoints, a collection of frequent checkpoints early in the training process of a 1B model. We release these checkpoints as a resource for anyone interested in studying early training dynamics. To view our official OLMo 2 1B model, please see OLMo-2-0425-1B. Or, view the entire collection of OLMo 2 models here.

We generated these checkpoints after the original training of our OLMo 2 1B model. Checkpoints were saved every 1,000 steps for 37,000 steps, starting at step0 of our OLMo-2-1B model.

A Note on these Checkpoints#

These checkpoints use the same architecture and starting checkpoint as the official OLMo 2 1B, but they aren’t identical to the original run due to the non-deterministic nature of LLM training environments. Performance may differ slightly. If you're interested in comparing these checkpoints to our original OLMo 2 1B, you can compare the checkpoints that are present in both repositories:

  • stage1-step0-tokens0B -- This official OLMo 2 1B checkpoint is loaded in as the starting point for these checkpoints
  • stage1-step10000-tokens21B
  • stage1-step20000-tokens42B
  • stage1-step30000-tokens63B

Inference#

You can access these checkpoints using the standard Hugging Face Transformers library:

from transformers import AutoModelForCausalLM, AutoTokenizer
olmo_early_training = AutoModelForCausalLM.from_pretrained("allenai/OLMo-2-0425-1B-early-training")
tokenizer = AutoTokenizer.from_pretrained("allenai/OLMo-2-0425-1B-early-training")
message = ["The capital of the United States is "]
inputs = tokenizer(message, return_tensors='pt', return_token_type_ids=False)

response = olmo_early_training.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])

To access a specific checkpoint, you can specify the revision:

olmo_early_training = AutoModelForCausalLM.from_pretrained("allenai/OLMo-2-0425-1B-early-training", revision="stage1-step20000-tokens42B")

Model Description#

  • Developed by: Allen Institute for AI (Ai2)
  • Model type: a Transformer style autoregressive language model.
  • Language(s) (NLP): English
  • License: The models and checkpoints are licensed under Apache 2.0. They are intended for research and educational use in accordance with Ai2's Responsible Use Guidelines.
  • Contact: Technical inquiries: olmo@allenai.org. Press: press@allenai.org

Bias, Risks, and Limitations#

Like any base or fine-tuned language model, AI can be prompted by users to generate harmful and sensitive content. Such content may also be produced unintentionally, especially in cases involving bias, so we recommend that users consider the risks when applying this technology. Additionally, many statements from OLMo or any LLM are often inaccurate, so facts should be verified.

Files

12 files · 5.95 GBWeights 5.94 GB (safetensors). Sizes and sha256 from the signed manifest.
Hide all 12 files with their sha256
FileSizesha256
.gitattributes1.52 KB11ad7efa24975ee4b0c3c3a38ed18737f0658a5f75a0a96787b576a78a023361
README.md3.39 KB401ba58620d97e9f38522c600dc1e5986380b05c2bfa98fd29a6ab1dfcaa83c9
config.json623 B14ab1cc5df780e1f2094f2ec21852ea4600e9fcf8c80cf730d680e1d207dc8e1
generation_config.json121 B20f96b18d7afbc8f660a63c0634002fa867e67e24cf8e4b69c1b02ba76c820ec
merges.txt917 KBb6fe424e334903f7fb84d3a106d9730455f4744b9fe3c21ee136d97a00e72502
model-00001-of-00002.safetensors4.98 GB68e6f76229b9838048837273342ed3cee19e23c9bcf10a09a0074851aeced765
model-00002-of-00002.safetensors956 MB0deb99769d043f9780b0d080a0bdb4ba70e06a6f512a2010854edafb92db1efc
model.safetensors.index.json14.9 KBcd8d63ba052fdc25e5309d04c0d9d0bca3bf3c56be8ff88c4b796e08c6c4f304
special_tokens_map.json125 B3c6bf7c09d5473c303cee8575a22bb51e5153c17d177a721b43cd4785c6d09ae
tokenizer.json7.14 MB73fd5254624f39a88e3faac6a8e11300fc3c735ed37880d4f4f08db898eaecca
tokenizer_config.json4.34 KB91c69c665697785ace4ec7dbd159e1839bc9bb5033ab05a56bb0547521dc9ab0
vocab.json1.61 MB9e14712c91b37c7aab74b1306baa46ac342d620637a4b44523cdc3aec7d24195
VersionsEach time the pinned upstream commit or file list changed in this repo. Newest first.
Upstream commitDateContents
c70db05bba pinned now2026-11-15 03:29 UTC12 files · 5.95 GB

Use it

$ fw get allenai/OLMo-2-0425-1B-early-training
# manifest sha256 25c5b17662b0… · 5.95 GB · 12 files
$ fw verify ./OLMo-2-0425-1B-early-training allenai/OLMo-2-0425-1B-early-training
fw.pyChecks the signature and every sha256, tries each source in order, resumes.
$ python3 fw.py get https://freeweights.allternit.com/manifests/allenai/OLMo-2-0425-1B-early-training.json --dir ./OLMo-2-0425-1B-early-training $ python3 fw.py verify ./OLMo-2-0425-1B-early-training ./allenai__OLMo-2-0425-1B-early-training.json
hfThe Hugging Face CLI with one setting. Same repo id.
$ HF_ENDPOINT=https://freeweights.allternit.com hf download allenai/OLMo-2-0425-1B-early-training --revision c70db05bba504a3bc7e9878db0e76b4b2de48013 --local-dir ./OLMo-2-0425-1B-early-training
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-2-0425-1B-early-training", revision="c70db05bba504a3bc7e9878db0e76b4b2de48013") model = AutoModelForCausalLM.from_pretrained("allenai/OLMo-2-0425-1B-early-training", revision="c70db05bba504a3bc7e9878db0e76b4b2de48013", device_map="auto")
vLLMServe an OpenAI-compatible API.
$ HF_ENDPOINT=https://freeweights.allternit.com vllm serve allenai/OLMo-2-0425-1B-early-training --revision c70db05bba504a3bc7e9878db0e76b4b2de48013

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. 2026-11-15
Text in
README.md
Text sha256
401ba58620d97e9f38522c600dc1e5986380b05c2bfa98fd29a6ab1dfcaa83c9
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-2-0425-1B-early-trainingDate: 2026-11-15Commit: c70db05Signed: 2DC28CC7B26A283B ✓
Upstream
allenai/OLMo-2-0425-1B-early-training
Pinned commit
c70db05bba504a3bc7e9878db0e76b4b2de48013
Manifest
OLMo-2-0425-1B-early-training.json · .minisig
Manifest sha256
25c5b17662b09e03b56e0aa93cf9106b956d141d5f296abdd022b5565b901c24
Signature
minisign, Ed25519, key 2DC28CC7B26A283B
Created
2026-11-15 03:29 UTC
Generator
freeweights-manifest/0.1.0
Takedowns
None.

How to verify

$ curl -O https://freeweights.allternit.com/manifests/allenai/OLMo-2-0425-1B-early-training.json $ curl -O https://freeweights.allternit.com/manifests/allenai/OLMo-2-0425-1B-early-training.json.minisig $ minisign -Vm OLMo-2-0425-1B-early-training.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

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Get it
Download
$ HF_ENDPOINT=https://freeweights.allternit.com hf download allenai/OLMo-2-0425-1B-early-training
Open in Freeweights Studio

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

Signed manifest
minisign, key 2DC28CC7B26A283B. OLMo-2-0425-1B-early-training.json. Provenance. Takedown history: none.
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