From: amazon <huggingface.co/amazon>Newsgroups: alt.freeweights.textSubject:

LAR-9B

Date: 2026-11-15Commit: b06e5fcSigned: 2DC28CC7B26A283B ✓

Model with 9B parameters. Safetensors weights, 17.9 GB in all. Published by amazon under Apache-2.0.

9B params17.9GBLAR-9Bsafetensorspermissive
FactsParams9BSize17.9 GBFormatssafetensorsTasknot taggedLicenseApache-2.0From sourcepermissive
$ fw get amazon/LAR-9B
# manifest sha256 26dfe9d2d92c… · 17.9 GB · 20 files
$ fw verify ./LAR-9B amazon/LAR-9B
From sourceHosted (signed)amazon/LAR-9BLast check: 2026-11-15 04:04 UTC

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

Fine-tune of Qwen3.5-9B.

Works with

Runs with

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

Overview

Size
17.9 GB
Weights
17.9 GB (safetensors)
Parameters
9B
Formats
safetensors
Task
not tagged
License
Apache-2.0 (permissive)
Files
20, each with a sha256
Publisher
amazon
Added
2026-11-15
Section
alt.freeweights.text
Lineage

Original release from the publisher.

Base model: Qwen/Qwen3.5-9B

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

Sources are tried in order. A file counts only when its size and sha256 match the manifest. Sources are checked when you ask for them, not on a timer.

Sources
BadgeHostLast checkResult
From sourcehuggingface.co2026-11-15 04:04 UTCpassed

Model card

From the publisher at commit b06e5fc. Shown as plain text with links; images open at the publisher.

LAR-9B#

This is the official model repository for Agentic RL Model with Process Reward with Lean 4 (LAR).

Model performance#

Main Results#

Image: ResultPlot

ModelSizeSWE-Bench-VerifiedTB-2.0TB-2.1
LAR-9B9B64.2%32.8%29.5%
LAR-27B27B84.2%68.2%77.3%
1. Install dependencies#
1.1 Install environment#
# Install the corresponding environment
# (run from the repository root; needs python3.12 + venv, git, docker with compose v2 (user in the docker group), sudo,
#  an NVIDIA driver and CUDA toolkit for CUDA 13; MODEL = LAR-27B checkpoint, WORK = work dir on a fast local disk)
export MODEL=amazon/LAR-27B WORK=/path/to/local/disk/tb21
python3.12 -m venv ~/.venvs/lar-serve
~/.venvs/lar-serve/bin/pip install -r PSWF/EvaluationKit/TB-2.1/requirements/serve.txt ./PSWF/EvaluationKit/TB-2.1
python3.12 -m venv ~/.venvs/lar-eval
~/.venvs/lar-eval/bin/pip install -r PSWF/EvaluationKit/TB-2.1/requirements/eval.txt ./PSWF/Harness/Terminus-2 ./PSWF/EvaluationKit/TB-2.1
~/.venvs/lar-eval/bin/python -m pswf_harbor_patches --tokenizer-dir $MODEL
1.2 Init TB-2.1 containers#
# Initialize the TB-2.1 containers
~/.venvs/lar-eval/bin/python -m tb21_eval.prepare --work-dir $WORK
sudo ~/.venvs/lar-eval/bin/python -m tb21_eval.netguard up --work-dir $WORK
~/.venvs/lar-eval/bin/python -m tb21_eval.netguard probe --work-dir $WORK
2. Run TB-2.1 evaluation using PSWF with Terminus-2#
# Run the evaluation
~/.venvs/lar-serve/bin/python -m tb21_eval.serve up --model $MODEL --work-dir $WORK
~/.venvs/lar-eval/bin/python -m tb21_eval.make_job --model $MODEL --work-dir $WORK --run-dir $WORK/runs/x5 --n-attempts 5 --n-concurrent 40
setsid nohup ~/.venvs/lar-eval/bin/harbor run -c $WORK/runs/x5/job.json --env-file $WORK/runs/x5/harbor.env > $WORK/runs/x5/harbor.log 2>&1 &
# ~16 h in the background; score at any time (if harbor was interrupted: ~/.venvs/lar-eval/bin/python -m tb21_eval.resume --run-dir $WORK/runs/x5)
~/.venvs/lar-eval/bin/python -m tb21_eval.score $WORK/runs/x5

Training Data and Methodology#

The released checkpoint is post-trained from Qwen/Qwen3.5-9B (licensed under Apache License 2.0) using Lean4AgenticRL process reward methods. This version was trained only on a filtered subset of SWE-Rebench containing software-engineering task examples from public code repositories. The underlying repository licenses were verified at the pinned base commits, and only examples meeting the license-filtering criteria were retained.

Responsible AI Considerations#

At Amazon, we are committed to developing AI responsibly and take a people-centric approach that prioritizes education, science, and our customers, to integrate responsible AI across the end-to-end AI lifecycle. We believe the use of AI must respect the rule of law and human rights, and we encourage the safe and responsible development of AI. When downloaded or used in accordance with AWS Responsible AI Policy, developers should work with their internal model team to ensure this model meets requirements for the relevant industry and use case and addresses unforeseen product misuse.

Please report model quality, risk, security vulnerabilities or Amazon AI Concerns here.

Reference#

If you find our work useful, please cite it using the BibTeX entry below. This entry currently links to the PDF hosted on GitHub and will be updated once the arXiv version is available.

@misc{wang2026lean4agenticrl,
      title={Lean4AgenticRL: Advancing Agentic RL with Verifiable Multi-level Process Rewards}, 
      author={Ruida Wang and Gerald Friedland and Tong Zhang and Chris Kong},
      year={2026},
      eprint={2610.22448},
      archivePrefix={arXiv},
      primaryClass={cs.LG},
      url={https://arxiv.org/abs/2610.22448}, 
}

Files

20 files · 17.9 GBWeights 17.9 GB (safetensors). Sizes and sha256 from the signed manifest.
Hide all 20 files with their sha256
FileSizesha256
.eval_results/swe_bench_verified.yaml180 Bcc0a7e59c1cb2a5819e533d46132284e7d9d73ce1a2c8e02b1e990374adb1bcc
.eval_results/terminal_bench_2_0.yaml181 B804264f3a5c428e526ba606211bba4c17244fb5f49d9992a37f3b2ddf0714eed
.eval_results/terminal_bench_2_1.yaml183 Bd9f994385cb4baf58637a7d810064cd279c482d6c7e02092136c3aa8807c50cf
.gitattributes1.57 KB34448b82c17d60fec9b65b1f093c115ddbaadc04beb1b0140b6bfed2e012a930
LICENSE11.5 KBbbedc3fda3305820b977265f01b8619d87570a6739de3a5582c3464840f1e57a
README.md4.20 KBc237e7f65516315dc66cb0cbd090a345d60c8dc176324b13ff52ad7c7d3cfa12
assets/ResultPlot.png627 KBc8e749678f845091fb73dbf53930be14d5f87133beb94e03e7640b146ec1fa2f
chat_template.jinja7.76 KBa4aee8afcf2e0711942cf848899be66016f8d14a889ff9ede07bca099c28f715
config.json3.13 KBd0883072e01861ed0b2d47be3c16c36a8e81c224c7ffaa310c6558fb3f932b05
merges.txt3.35 MBa9d356d7bdf1ef4949e3e748e95b8e10ad9d4e2e838eddc38a0a7b6b94d1db8d
model-00000-of-00004.safetensors4.21 GB49ecd1d28ab35c5e30e63fd66d7afaa1e9d9f3b1ddd19d792d4dd4da2e90af36
model-00001-of-00004.safetensors5.35 GB27f0d55531be96ec390e384e7578de3673946e28afb5eeab65b7b430e89ef69c
model-00002-of-00004.safetensors5.31 GB992f7cbabc0a413df161ddce8ccd90f35ec4b1d6d0d196f7cb5921923201958a
model-00003-of-00004.safetensors3.04 GBff43ac57d17d818939cefd411c3d61e3935ca680032b6877ed19e84148843769
model.safetensors.index.json42.0 KBf422adfaa4d228b292715f6a193f655571f6e357c45ba2ec139eae687e688add
preprocessor_config.json390 B27225450ac9c6529872ee1924fcb0962ff5634834f817040f444118116f4e516
tokenizer.json12.8 MB5f9e4d4901a92b997e463c1f46055088b6cca5ca61a6522d1b9f64c4bb81cb42
tokenizer_config.json16.7 KB316230d6a809701f4db5ea8f8fc862bc3a6f3229c937c174e674ff3ca0a64ac8
video_preprocessor_config.json385 B7768af27c1fafa9cc9011c1dc20067e03f8915e03b63504550e11d5066986d13
vocab.json6.72 MBce99b4cb2983d118806ce0a8b777a35b093e2000a503ebde25853284c9dfa003
VersionsEach time the pinned upstream commit or file list changed in this repo. Newest first.
Upstream commitDateContents
b06e5fc205 pinned now2026-11-15 04:04 UTC20 files · 17.9 GB

Use it

$ fw get amazon/LAR-9B
# manifest sha256 26dfe9d2d92c… · 17.9 GB · 20 files
$ fw verify ./LAR-9B amazon/LAR-9B
fw.pyChecks the signature and every sha256, tries each source in order, resumes.
$ python3 fw.py get https://freeweights.allternit.com/manifests/amazon/LAR-9B.json --dir ./LAR-9B $ python3 fw.py verify ./LAR-9B ./amazon__LAR-9B.json
hfThe Hugging Face CLI with one setting. Same repo id.
$ HF_ENDPOINT=https://freeweights.allternit.com hf download amazon/LAR-9B --revision b06e5fc205da92ad9a88e06e7e6c0d3600c8da8b --local-dir ./LAR-9B

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
LICENSE
Text sha256
bbedc3fda3305820b977265f01b8619d87570a6739de3a5582c3464840f1e57a
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: amazon <huggingface.co/amazon>Newsgroups: alt.freeweights.textSubject: LAR-9BDate: 2026-11-15Commit: b06e5fcSigned: 2DC28CC7B26A283B ✓
Upstream
amazon/LAR-9B
Pinned commit
b06e5fc205da92ad9a88e06e7e6c0d3600c8da8b
Manifest
LAR-9B.json · .minisig
Manifest sha256
26dfe9d2d92c99f4edb17bd8228d08db95f2fcc95aea63e0ce7544b606f98670
Signature
minisign, Ed25519, key 2DC28CC7B26A283B
Created
2026-11-15 04:04 UTC
Generator
freeweights-manifest/0.1.0
Takedowns
None.

How to verify

$ curl -O https://freeweights.allternit.com/manifests/amazon/LAR-9B.json $ curl -O https://freeweights.allternit.com/manifests/amazon/LAR-9B.json.minisig $ minisign -Vm LAR-9B.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

Parent

Qwen/Qwen3.5-9B · this model is a finetune of it

No model in the catalog names this one as its parent.

Get it
Download
$ HF_ENDPOINT=https://freeweights.allternit.com hf download amazon/LAR-9B
Open in Freeweights Studio

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

Signed manifest
minisign, key 2DC28CC7B26A283B. LAR-9B.json. Provenance. Takedown history: none.
From: laion <huggingface.co/laion>Subject: a2-rl-e2egit_large-50-32B
From: laion <huggingface.co/laion>Subject: a3-rl-DCAgent_exp_rpt_e2egit-large-15-8B
From: laion <huggingface.co/laion>Subject: a3-rl-DCAgent_exp_rpt_e2egit-v2-10-8B
From: laion <huggingface.co/laion>Subject: a3-rl-DCAgent_exp_rpt_pymethods2test-large-80-8B
From: laion <huggingface.co/laion>Subject: a3-rl-DCAgent_exp_rpt_unitsyn-python-large-10-8B
From: laion <huggingface.co/laion>Subject: a3-rl-DCAgent_mix_h2_language_proportional-65-8B