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Open-weight model · Reinforcement learning

sonic

by Sonic for A3 sonic-for-a3/sonic

sonic is an open-weight model for reinforcement learning from Sonic for A3, released under Apache License 2.0. Its published files total 1.3 GB.

This repository hosts the 035 / 200k weights and a separate Rockchip build sysroot. Built on GR00T-WholeBodyControl / SONIC. Thanks to the GEAR team for their amazing and solid work, comprehensive open-source release and thorough documentation.

Parameters—
Context—
Weights593.8 MB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads—

Model Card

By Sonic for A3, published under apache-2.0, revision 9bbddf873038.

This repository hosts the 035 / 200k weights and a separate Rockchip build sysroot. Built on GR00T-WholeBodyControl / SONIC. Thanks to the GEAR team for their amazing and solid work, comprehensive open-source release and thorough documentation. The 035 step-200,000 weights (PT, ONNX and RKNN) and accompanying release configurations are licensed under the Apache License 2.0. Third-party software in the sysroot retains its own license terms. Real-robot motions can fail or cause falls. Validate in MuJoCo first, retain a safety harness / gantry on hardware, and protect all people nearby. Use the source repository downloader to select PT, ONNX or RKNN artifacts. It also fetches the root…

Read Sonic for A3's full model card

SONIC for A3

This repository hosts the 035 / 200k weights and a separate Rockchip build sysroot.

Built on GR00T-WholeBodyControl / SONIC. Thanks to the GEAR team for their amazing and solid work, comprehensive open-source release and thorough documentation.

The 035 step-200,000 weights (PT, ONNX and RKNN) and accompanying release configurations are licensed under the Apache License 2.0. Third-party software in the sysroot retains its own license terms.

Real-robot motions can fail or cause falls. Validate in MuJoCo first, retain a safety harness / gantry on hardware, and protect all people nearby.

Downloads

Use the source repository downloader to select PT, ONNX or RKNN artifacts. It also fetches the root config.json release metadata, which Hugging Face uses for its native download statistics. Sysroot-only downloads do not fetch this model metadata.

The Hub counter measures requests to recognized configuration files, not unique users or completed weight transfers. Direct binary-only downloads and fully cached local runs may not be counted. Statistics update on Hugging Face's schedule; this change does not reconstruct previously untracked downloads.

Identity and Version

Repository
sonic-for-a3/sonic
Publisher
Sonic for A3
Task
Reinforcement learning
Modality
Control
Library
Not stated by the source
Parameters
Not stated by the source
Languages
Not stated by the source
Revision
9bbddf8730389c2a1980e69c8b410a8dbcc3e28e
First published
2026-09-24
Last updated
2026-10-09

Files and Weights

22 files, 1.3 GB in total. The weights are 5 files totalling 593.8 MB in onnx, pt.

Weights5 files · 593.8 MB
Configuration6 files · 48.7 KB
Documentation5 files · 25.9 KB
Other5 files · 739.2 MB
Repository1 file · 1.7 KB
Every file
FileTypeSizeSHA-256
035_step200000/model_step_200000.ptWeights402.1 MB 9cf33be2f4e6
035_step200000/onnx/model_step_200000_a3_fast.onnxWeights58.1 MB 66f967af0ebf
035_step200000/onnx/model_step_200000_decoder.onnxWeights40.9 MB b6ccaa9ed31c
035_step200000/onnx/model_step_200000_encoder.onnxWeights34.5 MB b4c81c5dce8a
035_step200000/onnx/model_step_200000_g1.onnxWeights58.1 MB e6bb536099e8
035_step200000/config.yamlConfiguration37.2 KB —
035_step200000/meta.yamlConfiguration40 B —
035_step200000/model_config.yamlConfiguration9.5 KB —
035_step200000/rknn/model_step_200000_a3_fast.rknn.jsonConfiguration646 B —
035_step200000/rknn/model_step_200000_g1.rknn.jsonConfiguration631 B —
config.jsonConfiguration609 B —
035_step200000/LICENSEDocumentation11.4 KB —
035_step200000/README.mdDocumentation1.1 KB —
LICENSEDocumentation11.4 KB —
README.mdDocumentation1.4 KB —
rockchip_sysroot/README.mdDocumentation607 B —
035_step200000/SHA256SUMSOther1.3 KB —
035_step200000/rknn/model_step_200000_a3_fast.rknnOther31.1 MB 3ca6da15f81d
035_step200000/rknn/model_step_200000_g1.rknnOther31.1 MB 82ef1d7cc541
rockchip_sysroot/SHA256SUMSOther178 B —
rockchip_sysroot/rockchip-1.0-aarch64-sysroot.tar.gzOther677.0 MB af1d7d230b48
.gitattributesRepository1.7 KB —

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
593.8 MB
Download from Sonic for A3

Released by Sonic for A3 through its official repository on Hugging Face. Read the license.

Memory Requirements

PrecisionWeights in memory
As published593.8 MB

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

Questions About sonic

Can I use sonic commercially?

Yes. sonic 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.

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