alt.freeweights.olmo / Flex-math-2x7B-1T
From: allenai <huggingface.co/allenai>Newsgroups: alt.freeweights.olmoSubject:

Flex-math-2x7B-1T

Date: 2026-11-15Commit: 5145cc9Signed: 2DC28CC7B26A283B ✓

Text generation model with 11.6B parameters. Safetensors weights, 46.5 GB in all. Published by allenai under Apache-2.0.

11.6B params46.5GBFlex-math-2x7B-1Tsafetensorspermissive
FactsParams11.6BSize46.5 GBFormatssafetensorsTasktext generationLicenseApache-2.0From sourcepermissive
$ fw get allenai/Flex-math-2x7B-1T
# manifest sha256 155bdf1ef4d1… · 46.5 GB · 21 files
$ fw verify ./Flex-math-2x7B-1T allenai/Flex-math-2x7B-1T
From sourceHosted (signed)allenai/Flex-math-2x7B-1TLast check: 2026-11-15 03:55 UTC

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

Works with

Overview

Size
46.5 GB
Weights
46.5 GB (safetensors)
Parameters
11.6B
Formats
safetensors
Task
text generation
License
Apache-2.0 (permissive)
Files
21, each with a sha256
Publisher
allenai
Added
2026-11-15
Section
alt.freeweights.olmo
Lineage

Original release from the publisher.

Where these bytes come from
Publisher at the pinned commit→You

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Sources
BadgeHostLast checkResult
From sourcehuggingface.co2026-11-15 03:55 UTCpassed

Model card

From the publisher at commit 5145cc9. Shown as plain text with links; images open at the publisher.

Image: FlexOlmo Logo. FlexOlmo is a new kind of LM that unlocks a new paradigm of data collaboration. With FlexOlmo, data owners can contribute to the development of open language models without giving up control of their data. There is no need to share raw data directly, and data contributors can decide when their data is active in the model, deactivate it at any time, and receive attributions whenever it's used for inference.

Model Summary#

FlexOlmo-7x7B-1T (without router training) is a Mixture-of-Experts with 33B total parameters, combining independently trained experts on public-mix, news, math, code, academic texts, creative writing, and Reddit data. The public-mix expert is trained on 1T tokens of public data while the other experts are branched from the public-mix expert and trained on 50B tokens of their respective data.

This information and more can also be found:

Use#

Install transformers with version 4.57.0 or newer and run:

from transformers import AutoModelForCausalLM, AutoTokenizer
import torch

DEVICE = "cuda" if torch.cuda.is_available() else "cpu"

MODEL_NAME = "allenai/Flex-math-2x7B-1T"
TOKENIZER_NAME = "allenai/dolma2-tokenizer"
model = AutoModelForCausalLM.from_pretrained(MODEL_NAME).to(DEVICE)
tokenizer = AutoTokenizer.from_pretrained(TOKENIZER_NAME)
inputs = tokenizer("Bitcoin is", return_tensors="pt")
inputs = {k: v.to(DEVICE) for k, v in inputs.items()}
out = model.generate(**inputs, max_length=64)
print(tokenizer.decode(out[0]))

Evaluation Snapshot#

ModelMC9Gen5MMLUMMLU ProAGIEvalBBHMath2NewsGPoemGSciRIFF5Code4Avg.
Prev. Public model68.758.855.926.239.935.78.276.047.848.11.142.4
Individual
Math62.544.350.624.142.045.653.142.628.050.715.841.8
Code40.539.429.514.527.438.16.045.128.248.021.030.7
News46.548.636.415.225.730.92.577.726.947.00.032.5
Creative Writing42.743.931.511.623.327.61.756.967.542.40.031.7
Academic41.045.233.814.824.132.46.551.823.052.00.029.5
Reddit64.736.556.125.535.519.72.554.18.632.71.730.7
Combined
BTM (top-2)68.757.759.428.343.244.323.173.654.446.324.047.6
FlexOlmo-7x7B-1T65.644.750.922.137.235.625.455.839.045.910.639.3
FlexOlmo-7x7B-1T-RT70.659.760.030.544.645.947.779.767.654.511.352.0
  • The evaluation of the individual model refers to the dense model, not the 2x7B MoE model.

Citation#

@misc{flexolmo,
      title={FlexOlmo: Open Language Models for Flexible Data Use}, 
      author={Weijia Shi and Akshita Bhagia and Kevin Farhat and Niklas Muennighoff and Pete Walsh and Jacob Morrison and Dustin Schwenk and Shayne Longpre and Jake Poznanski and Allyson Ettinger and Daogao Liu and Margaret Li and Mike Lewis and Wen-tau Yih and Dirk Groeneveld and Luca Soldaini and Kyle Lo and Noah A. Smith and Luke Zettlemoyer and Pang Wei Koh and Hannaneh Hajishirzi and Ali Farhadi and Sewon Min},
      year={2025},
      eprint={2507.00000},
      archivePrefix={arXiv},
      primaryClass={cs.CL},
      url={https://allenai.org/papers/flexolmo}, 
}

Files

21 files · 46.5 GBWeights 46.5 GB (safetensors). Sizes and sha256 from the signed manifest.
Show all 21 files with their sha256
FileSizesha256
.gitattributes1.52 KB11ad7efa24975ee4b0c3c3a38ed18737f0658a5f75a0a96787b576a78a023361
FlexOlmo_Logo.png17.8 KBb85598008029e8e40ef7cf85dae4f5ead047c05bbd4451b9996a09d0d11b2eb6
README.md4.94 KB14991725b60e132bd6d910d31d022eb26ea75c0447d24a2f9fae647804262a12
config.json796 B5747a66a3277d6b7c76bd0df7cab03c656640246d62aa846c5f39b024e1e48dd
generation_config.json74 Bb9acf52072249e0e1850541d51ca4c85a30b9d7e23c2f2093ec0fb4139059ac7
merges.txt917 KBb6fe424e334903f7fb84d3a106d9730455f4744b9fe3c21ee136d97a00e72502
model-00001-of-00010.safetensors4.97 GBe5cd19f8a4ed01d74128a5c76d4106615a9868d9ee18045fccc1dc9d61f86034
model-00002-of-00010.safetensors4.97 GB8d07b2e011dd434763f84a802019fcbf5ef3c9a1e92a5106ad049500cb67fd9c
model-00003-of-00010.safetensors4.84 GBbbebbdc37af91166e505d9e26d4bdc2e2d05313b568bfef8a1bc2c9b3d8e188d
model-00004-of-00010.safetensors4.86 GBfb172e0872cccfb9f7957c84c89c6c84d61f8e5126be2414d3a3287c4e53eb1f
model-00005-of-00010.safetensors4.95 GB1817d866dbb5510dac6de14978a3a224c4a9c1c5f2db7da42f82e4fa1f132e5b
model-00006-of-00010.safetensors4.86 GB8f1f69909dc1f3be2e76149e785bf8e47acff0f5f3eaff81a85064ade78da3e2
model-00007-of-00010.safetensors4.86 GB4878749f601281d2d40ca2b4bb3ce45b5a61fdd276e48368055accc403ae6fdf
model-00008-of-00010.safetensors4.95 GBd52875fe71266fbdd9d33030435d9cf62c713b7e6bd6312cc8667a74899e724b
model-00009-of-00010.safetensors4.86 GBe6fec0f0c0180e167464097ea5fba5272b2a7595eb0447c4df3ead6178b8b7b2
model-00010-of-00010.safetensors2.37 GB1393156163f0ffab6cca5c6d391ea230d30e3ecbe4252d65ec7768a6b7051197
model.safetensors.index.json41.5 KB007c07bc6342d9205d756573ef10b432d3bcb89c77b007fe5799d751bfb68187
special_tokens_map.json581 B78afb564e81264029b25f9caf24bda2521d5bdaeff5cd3fdbc01d3da2e8ce2f2
tokenizer.json4.24 MB969c214487b744f1457d8a4f2055fd4ad348edff5322d4f21f2906ceb158a636
tokenizer_config.json4.51 KBf820eb9a838bd1c87cb14ceee85a4d443efad3a380f666befd41ad18b0ac4f76
vocab.json1.61 MB9e14712c91b37c7aab74b1306baa46ac342d620637a4b44523cdc3aec7d24195
VersionsEach time the pinned upstream commit or file list changed in this repo. Newest first.
Upstream commitDateContents
5145cc9395 pinned now2026-11-15 03:55 UTC21 files · 46.5 GB

Use it

$ fw get allenai/Flex-math-2x7B-1T
# manifest sha256 155bdf1ef4d1… · 46.5 GB · 21 files
$ fw verify ./Flex-math-2x7B-1T allenai/Flex-math-2x7B-1T
fw.pyChecks the signature and every sha256, tries each source in order, resumes.
$ python3 fw.py get https://freeweights.allternit.com/manifests/allenai/Flex-math-2x7B-1T.json --dir ./Flex-math-2x7B-1T $ python3 fw.py verify ./Flex-math-2x7B-1T ./allenai__Flex-math-2x7B-1T.json
hfThe Hugging Face CLI with one setting. Same repo id.
$ HF_ENDPOINT=https://freeweights.allternit.com hf download allenai/Flex-math-2x7B-1T --revision 5145cc93954e82400d651fd4437c14ec5752802a --local-dir ./Flex-math-2x7B-1T
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/Flex-math-2x7B-1T", revision="5145cc93954e82400d651fd4437c14ec5752802a") model = AutoModelForCausalLM.from_pretrained("allenai/Flex-math-2x7B-1T", revision="5145cc93954e82400d651fd4437c14ec5752802a", device_map="auto")
vLLMServe an OpenAI-compatible API.
$ HF_ENDPOINT=https://freeweights.allternit.com vllm serve allenai/Flex-math-2x7B-1T --revision 5145cc93954e82400d651fd4437c14ec5752802a

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
14991725b60e132bd6d910d31d022eb26ea75c0447d24a2f9fae647804262a12
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: Flex-math-2x7B-1TDate: 2026-11-15Commit: 5145cc9Signed: 2DC28CC7B26A283B ✓
Upstream
allenai/Flex-math-2x7B-1T
Pinned commit
5145cc93954e82400d651fd4437c14ec5752802a
Manifest
Flex-math-2x7B-1T.json · .minisig
Manifest sha256
155bdf1ef4d1749aa1d4c286a9f86d8b133fe041f0fec0568a6a69753f80c0dc
Signature
minisign, Ed25519, key 2DC28CC7B26A283B
Created
2026-11-15 03:55 UTC
Generator
freeweights-manifest/0.1.0
Takedowns
None.

How to verify

$ curl -O https://freeweights.allternit.com/manifests/allenai/Flex-math-2x7B-1T.json $ curl -O https://freeweights.allternit.com/manifests/allenai/Flex-math-2x7B-1T.json.minisig $ minisign -Vm Flex-math-2x7B-1T.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

No related models in this catalog.Nothing here lists this model as its parent, and it names no parent.
Get it
Download
$ HF_ENDPOINT=https://freeweights.allternit.com hf download allenai/Flex-math-2x7B-1T
Open in Freeweights Studio

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

Signed manifest
minisign, key 2DC28CC7B26A283B. Flex-math-2x7B-1T.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