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Open-weight model · Robotics

LAW-VLM-FastWAM

by KAI KAITANG2003/LAW-VLM-FastWAM

LAW-VLM-FastWAM is an open-weight model for robotics from KAI, released under Apache License 2.0. It has 262,144-token context. Its published files total 5.4 GB.

Complete Qwen3-VL-2B VLM for LAW + FastWAM: Q1 planning, Q2 completion/failure assessment, and Q3 action-conditioned value estimation.

Parameters—
Context262,144
Weights5.3 GB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads—

Model Card

By KAI, published under apache-2.0, revision 3449f20f4a25.

Complete Qwen3-VL-2B VLM for LAW + FastWAM: Q1 planning, Q2 completion/failure assessment, and Q3 action-conditioned value estimation. Includes the frozen backbone, Q1/Q2 adapters, query embeddings and tokenizer at the repository root, plus the matching value checkpoint under q3/. Use this VLM with LAW-FastWAM. Matching training, inference, resource download and verification code: hey-cjj/LAW. Files are copied from the previously verified checkpoints without changing tensor bytes. Q2 and Q3 are the selected step-50,000 checkpoints. This packaging change does not retrain the model. The release previously passed six bounded 32-GPU two-optimizer-step training save/load checks and two bounded…

Read KAI's full model card

Complete Qwen3-VL-2B VLM for LAW + FastWAM: Q1 planning, Q2 completion/failure assessment, and Q3 action-conditioned value estimation.

Includes the frozen backbone, Q1/Q2 adapters, query embeddings and tokenizer at the repository root, plus the matching value checkpoint under q3/. Use this VLM with LAW-FastWAM.

Matching training, inference, resource download and verification code: hey-cjj/LAW.

Files are copied from the previously verified checkpoints without changing tensor bytes. Q2 and Q3 are the selected step-50,000 checkpoints. This packaging change does not retrain the model. The release previously passed six bounded 32-GPU two-optimizer-step training save/load checks and two bounded real RoboTwin policy episodes. Those checks do not constitute a new full benchmark reproduction; see release audit.

LAW-authored trained weights/adapters are Apache-2.0. Upstream materials retain their original terms; see LICENSE_WEIGHTS.txt and LICENSE_SCOPE.md. This model is publicly available.

Configuration

Architecture
Qwen3VLForConditionalGeneration
Context length (tokens)
262,144
Layers
28
Hidden size
2,048
Feed-forward size
6,144
Attention heads
16
Key/value heads
8
Head dimension
128
Vocabulary size
151,672
RoPE base
5,000,000
Model type
qwen3_vl

Identity and Version

Repository
KAITANG2003/LAW-VLM-FastWAM
Publisher
KAI
Task
Robotics
Modality
Control
Library
Not stated by the source
Parameters
Not stated by the source
Languages
Not stated by the source
Revision
3449f20f4a250d99c95552feaad0d2f2c6b4ac28
First published
2026-10-13
Last updated
2026-10-13

Files and Weights

20 files, 5.4 GB in total. The weights are 5 files totalling 5.3 GB in bin, pt, safetensors.

Weights5 files · 5.3 GB
Configuration6 files · 8.4 MB
Tokenizer4 files · 15.9 MB
Documentation3 files · 13.9 KB
Other1 file · 5.3 KB
Repository1 file · 1.6 KB
Every file
FileTypeSizeSHA-256
pytorch_model.binWeights5.0 GB 79aa4bddb9c8
q1/adapter_model.safetensorsWeights51.4 MB 2fd6bd3c6957
q2/adapter_model.safetensorsWeights51.4 MB 88f3051692ab
q3/q3_state.ptWeights241.3 MB ab134834d4cd
robotwin_query_embeddings.binWeights10.1 KB 4d133d5f0cde
config.jsonConfiguration1.6 KB —
q1/adapter_config.jsonConfiguration912 B —
q2/adapter_config.jsonConfiguration912 B —
q3/q3_config.jsonConfiguration1.4 KB —
q3/source_checkpoint.jsonConfiguration416 B —
trainer_state.jsonConfiguration8.4 MB —
LICENSE_SCOPE.mdDocumentation1.3 KB —
LICENSE_WEIGHTS.txtDocumentation11.4 KB —
README.mdDocumentation1.2 KB —
chat_template.jinjaOther5.3 KB —
.gitattributesRepository1.6 KB —
merges.txtTokenizer1.7 MB —
tokenizer.jsonTokenizer11.4 MB 7f1210e04882
tokenizer_config.jsonTokenizer5.8 KB —
vocab.jsonTokenizer2.8 MB —

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
5.3 GB
Download from KAI

Released by KAI through its official repository on Hugging Face. Read the license.

Memory Requirements

PrecisionWeights in memory
As published5.3 GB

Weights only, from the published parameter count; the key-value cache and runtime add to this.

Questions About LAW-VLM-FastWAM

Can I use LAW-VLM-FastWAM commercially?

Yes. LAW-VLM-FastWAM is released under Apache License 2.0. The Apache License 2.0 is a permissive open-source license. It permits commercial use, modification and redistribution. It requires keeping the license and copyright notices and any NOTICE file, stating significant changes, and it includes an express patent grant from contributors.

What is LAW-VLM-FastWAM's context length?

262,144 tokens, from the maximum position embeddings in its published configuration.

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