alt.freeweights.olmo / BAR-7B

From:

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

BAR-7B

Date: 2026-11-15Commit: bee49dbSigned: 2DC28CC7B26A283B ✓

Text generation model with 7.3B parameters. Safetensors weights, 14.6 GB in all. Published by allenai under Apache-2.0.

7.3B params

14.6GBBAR-7Bsafetensorspermissive

FactsParams7.3BSize14.6 GBFormatssafetensorsTasktext generationLicenseApache-2.0From sourcepermissive

$ fw get allenai/BAR-7B
# manifest sha256 efb9d4ccdd1e… · 14.6 GB · 14 files
$ fw verify ./BAR-7B allenai/BAR-7B

From sourceHosted (signed)allenai/BAR-7BLast check: 2026-11-15 03:27 UTC

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Works with

Run24 Fine-tune29 Convert15 Evaluate13 Scan13 Apps58

Runs with

Ranked by fit to this model (safetensors), then by GitHub stars.

vLLM exo Text Generation WebUI

SGLang MLC LLM KTransformers LMCache Xinference LMDeploy mistral.rs Mooncake FlashInfer

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AIBrix fastllm ExLlamaV3

Transformers LocalAI tinygrad gpu-unlock Triton Inference Server BentoML CTranslate2 ExLlamaV2 LitServe

Convert with

mergekit TensorRT Model Optimizer

LLM Compressor Neural Compressor AutoRound AQLM GPTQModel ONNX Core ML Tools ExecuTorch

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Evaluate with

Opik DeepEval Ragas lm-evaluation-harness OpenCompass SWE-bench

simple-evals TruLens HELM

LightEval

Evaluate Weave

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Autoevals

Scan with

promptfoo garak Guardrails NeMo Guardrails Giskard DeepTeam AI Fairness 360 Fairlearn Detoxify MCP Scanner AgentDojo ModelScan

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picklescan

Overview Model card Files Use it License Provenance Model tree

Overview

Size: 14.6 GB
Weights: 14.6 GB (safetensors)
Parameters: 7.3B
Formats: safetensors
Task: text generation
License: Apache-2.0 (permissive)
Files: 14, each with a sha256
Publisher: allenai
Added: 2026-11-15
Section: alt.freeweights.olmo

Lineage

Original release from the publisher.

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Sources

Badge	Host	Last check	Result
From source	huggingface.co	2026-11-15 03:27 UTC	passed

Model card

From the publisher at commit bee49db. Shown as plain text with links; images open at the publisher.

BAR#

BAR (Branch-Adapt-Route) is a modular post-training approach that extends a fully post-trained language model with new domain capabilities via independently trained Mixture-of-Experts. Rather than retraining a single model across all domains, BAR trains independent domain experts — each through its own mid-training, supervised finetuning (SFT), and reinforcement learning pipeline — and composes them into a unified model via an MoE architecture with lightweight router training.

All BAR models are built on top of Olmo 2 7B.

Models in the BAR suite#

BAR-7B — initial fully post-trained 7B dense model (the starting point)
BAR-2x7B-Base — 2-expert MoE (anchor + base pre-trained model)
BAR-2x7B-Math-SFT — math expert after mid-training and SFT
BAR-2x7B-Math — math expert after mid-training + SFT + RLVR
BAR-2x7B-Code-SFT — code expert after mid-training and SFT
BAR-2x7B-Code — code expert after mid-training + SFT + RLVR
BAR-2x7B-Tool-Use — tool use expert (SFT only)
BAR-2x7B-Safety — safety expert (SFT only)
BAR-5x7B — final 5-expert MoE combining all experts with a trained router

Results#

Model	Overall	Knowledge	Reasoning	Chat	Math	Code	Tool Use	Safety
BAR-7B	31.3	28.5	29.8	48.9	23.6	11.8	25.3	51.3
BAR-2x7B-Math-SFT	36.8	28.8	31.2	40.9	41.9	20.5	21.6	72.7
BAR-2x7B-Math	39.3	29.0	30.8	42.5	55.8	22.1	19.8	75.4
BAR-2x7B-Code-SFT	38.5	28.8	29.1	40.1	25.5	49.3	19.7	77.3
BAR-2x7B-Code	38.8	28.5	29.2	41.0	26.9	50.4	19.8	75.3
BAR-2x7B-Tool-Use	37.2	28.5	28.7	39.3	21.8	16.9	46.4	79.1
BAR-2x7B-Safety	35.6	28.7	28.8	38.1	22.4	15.7	21.1	94.6
BAR-5x7B	49.1	28.4	30.8	38.7	56.2	49.9	45.6	94.0

Scores are unweighted averages across benchmarks within each category. See the paper for per-benchmark results and full evaluation details.

License#

This model is licensed under Apache 2.0. It is intended for research and educational use in accordance with Ai2's Responsible Use Guidelines.

Files

14 files · 14.6 GBWeights 14.6 GB (safetensors). Sizes and sha256 from the signed manifest.

Hide all 14 files with their sha256

File	Size	sha256
.gitattributes	1.52 KB	11ad7efa24975ee4b0c3c3a38ed18737f0658a5f75a0a96787b576a78a023361
README.md	2.37 KB	4f81343f9be924e0a3506f53cebbc8b35094f4f857d0f89c681a4a7e3377c4d7
chat_template.jinja	1.65 KB	1fd2eac6d6f73da1f9e30d9b0511f91a70cc8455ffffe48d20f48e77357f5029
config.json	628 B	f24aa8066b70f75a4d5d521b5fb27c38f6d535bd48594d8ac0943d94390cf0c8
generation_config.json	117 B	496161edfb3e55e5879516705fa2f0ec0b89d99a5131124020e9b54d936840f8
merges.txt	917 KB	b6fe424e334903f7fb84d3a106d9730455f4744b9fe3c21ee136d97a00e72502
model-00001-of-00003.safetensors	4.97 GB	9a39d4366426f29ea811184e41597c107839a0612a3719ecc1688f7f12ffbe68
model-00002-of-00003.safetensors	4.98 GB	a26aec3db3aa4e754ca70c681822fda34614920aa08244c631a66b4588805f0d
model-00003-of-00003.safetensors	4.64 GB	174a99f77f0f3361096fec82c20a2c55b717e10b244f103b422010851f5920a7
model.safetensors.index.json	29.6 KB	047363d2ecf3010aaa966e136379e661c0efb2612aa948a007550a49518cf4e8
special_tokens_map.json	581 B	78afb564e81264029b25f9caf24bda2521d5bdaeff5cd3fdbc01d3da2e8ce2f2
tokenizer.json	7.14 MB	73fd5254624f39a88e3faac6a8e11300fc3c735ed37880d4f4f08db898eaecca
tokenizer_config.json	4.34 KB	91c69c665697785ace4ec7dbd159e1839bc9bb5033ab05a56bb0547521dc9ab0
vocab.json	1.61 MB	9e14712c91b37c7aab74b1306baa46ac342d620637a4b44523cdc3aec7d24195

VersionsEach time the pinned upstream commit or file list changed in this repo. Newest first.

Upstream commit	Date	Contents
bee49db022 pinned now	2026-11-15 03:27 UTC	14 files · 14.6 GB

Use it

$ fw get allenai/BAR-7B
# manifest sha256 efb9d4ccdd1e… · 14.6 GB · 14 files
$ fw verify ./BAR-7B allenai/BAR-7B

fw.pyChecks the signature and every sha256, tries each source in order, resumes.

$ python3 fw.py get https://freeweights.allternit.com/manifests/allenai/BAR-7B.json --dir ./BAR-7B
$ python3 fw.py verify ./BAR-7B ./allenai__BAR-7B.json

hfThe Hugging Face CLI with one setting. Same repo id.

$ HF_ENDPOINT=https://freeweights.allternit.com hf download allenai/BAR-7B --revision bee49db02284e88308e85c352e8d9a01b2b48ff5 --local-dir ./BAR-7B

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/BAR-7B", revision="bee49db02284e88308e85c352e8d9a01b2b48ff5")
model = AutoModelForCausalLM.from_pretrained("allenai/BAR-7B", revision="bee49db02284e88308e85c352e8d9a01b2b48ff5", device_map="auto")

vLLMServe an OpenAI-compatible API.

$ HF_ENDPOINT=https://freeweights.allternit.com vllm serve allenai/BAR-7B --revision bee49db02284e88308e85c352e8d9a01b2b48ff5

Run at home

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: 4f81343f9be924e0a3506f53cebbc8b35094f4f857d0f89c681a4a7e3377c4d7
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: BAR-7BDate: 2026-11-15Commit: bee49dbSigned: 2DC28CC7B26A283B ✓

Upstream: allenai/BAR-7B
Pinned commit: bee49db02284e88308e85c352e8d9a01b2b48ff5
Manifest: BAR-7B.json · .minisig
Manifest sha256: efb9d4ccdd1e910eed9ea4f07a16bc53e0a88c873a4da06b97fa55a2a35d36b1
Signature: minisign, Ed25519, key 2DC28CC7B26A283B
Created: 2026-11-15 03:27 UTC
Generator: freeweights-manifest/0.1.0
Takedowns: None.

How to verify

$ curl -O https://freeweights.allternit.com/manifests/allenai/BAR-7B.json
$ curl -O https://freeweights.allternit.com/manifests/allenai/BAR-7B.json.minisig
$ minisign -Vm BAR-7B.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/BAR-7B

Open in Freeweights Studio

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

Signed manifest

minisign, key 2DC28CC7B26A283B. BAR-7B.json. Provenance. Takedown history: none.

Source

huggingface.co/allenai/BAR-7B

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BAR-7B

Works with

Runs with

Fine-tune with

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Evaluate with

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Works with

Overview

Model card

BAR#

Models in the BAR suite#

Results#

License#

Files

Use it

License

Provenance

How to verify

Model tree

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