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Open-weight model · Robotics

chronos-policy

by Changhao Wang changhaowang/chronos-policy

chronos-policy is an open-weight model for robotics from Changhao Wang. Its published files total 26.9 GB.

These are the 48 original simulation checkpoints used by the paper: Chronos and the timestamp-blind diffusion-transformer (DT) baseline, three training seeds, and eight tasks. Each checkpoint is approximately 560 MB.

Parameters—
Context—
Weights26.9 GB
License—
AccessOpen weights
Monthly Downloads—

Model Card

These are the 48 original simulation checkpoints used by the paper: Chronos and the timestamp-blind diffusion-transformer (DT) baseline, three training seeds, and eight tasks. Each checkpoint is approximately 560 MB. This repository is a public release candidate while dataset publication is completed. The Conveyor/Pivoting training and evaluation campaign is finished. It contains the original selected weights, not retrained replacements. manifest.json records their exact sizes and SHA-256 hashes, fixed evaluation seeds, selected scene batches, and paper reference counts. All 48 remote checkpoint hashes have been verified against the paper manifest. The compact release model also matches the…

Excerpt from the card by Changhao Wang.

Identity and Version

Repository
changhaowang/chronos-policy
Publisher
Changhao Wang
Task
Robotics
Modality
Control
Library
pytorch
Parameters
Not stated by the source
Languages
Not stated by the source
Revision
03ffa95a05ebc9fa5dff374d3c79bf794cd0e845
First published
2026-10-09
Last updated
2026-10-10

Files and Weights

56 files, 26.9 GB in total. The weights are 48 files totalling 26.9 GB in ckpt.

Weights48 files · 26.9 GB
Configuration3 files · 511.8 KB
Documentation2 files · 10.0 KB
Other2 files · 122.6 KB
Repository1 file · 1.5 KB
Every file
FileTypeSizeSHA-256
assembly/chronos/seed0.ckptWeights559.8 MB 30d731c97ad0
assembly/chronos/seed1.ckptWeights559.8 MB b411faa5fb3f
assembly/chronos/seed2.ckptWeights559.8 MB b0718e986ac4
assembly/dt/seed0.ckptWeights562.4 MB bcd96835c9de
assembly/dt/seed1.ckptWeights562.4 MB 29ba79d29474
assembly/dt/seed2.ckptWeights562.4 MB 28a3f697fe8d
coffee/chronos/seed0.ckptWeights559.9 MB f77e785bb937
coffee/chronos/seed1.ckptWeights559.9 MB 302edc1c7498
coffee/chronos/seed2.ckptWeights559.9 MB 2a16da12f05a
coffee/dt/seed0.ckptWeights562.5 MB 99f5073387f0
coffee/dt/seed1.ckptWeights562.5 MB 8db4095e39a2
coffee/dt/seed2.ckptWeights562.5 MB 82b5077b13a9
conveyor/chronos/seed0.ckptWeights559.7 MB b5bd767e1b86
conveyor/chronos/seed1.ckptWeights559.7 MB 3e2a26b13007
conveyor/chronos/seed2.ckptWeights559.7 MB ac3a6e8be4ea
conveyor/dt/seed0.ckptWeights560.3 MB ad3ace636b62
conveyor/dt/seed1.ckptWeights560.3 MB 715bfea5c90a
conveyor/dt/seed2.ckptWeights560.3 MB 9476087cabd1
drawer_cleanup/chronos/seed0.ckptWeights559.9 MB 93b0544c61ef
drawer_cleanup/chronos/seed1.ckptWeights559.9 MB 48439c8c3389
drawer_cleanup/chronos/seed2.ckptWeights559.9 MB 9ce9c6e95c77
drawer_cleanup/dt/seed0.ckptWeights562.5 MB 7cc37fa64b2b
drawer_cleanup/dt/seed1.ckptWeights562.5 MB 5e0fb3f2e4fb
drawer_cleanup/dt/seed2.ckptWeights562.5 MB 0ea1b8057eec
flipup/chronos/seed0.ckptWeights559.8 MB 2e60daf8ca13
flipup/chronos/seed1.ckptWeights559.8 MB 27ac5d59a857
flipup/chronos/seed2.ckptWeights559.8 MB 52bdaede8555
flipup/dt/seed0.ckptWeights560.4 MB 0a1e86d65223
flipup/dt/seed1.ckptWeights560.4 MB 09cbff008b32
flipup/dt/seed2.ckptWeights560.4 MB eb249dc19b92
pouring/chronos/seed0.ckptWeights559.9 MB b8f41acd4b3a
pouring/chronos/seed1.ckptWeights559.9 MB 8b0ddc515b45
pouring/chronos/seed2.ckptWeights559.9 MB 7e5720475c8a
pouring/dt/seed0.ckptWeights562.5 MB 847ca60fcecb
pouring/dt/seed1.ckptWeights562.5 MB b50d4b37f22e
pouring/dt/seed2.ckptWeights562.5 MB 81b70dc0603b
threading/chronos/seed0.ckptWeights559.8 MB a6d25a16c05a
threading/chronos/seed1.ckptWeights559.8 MB 4ffd677c98a6
threading/chronos/seed2.ckptWeights559.8 MB 8b4f0f1073b8
threading/dt/seed0.ckptWeights562.4 MB a3ad689d2d20
threading/dt/seed1.ckptWeights562.4 MB 990d2998d021
threading/dt/seed2.ckptWeights562.4 MB 1bde01bb6bf5
transport/chronos/seed0.ckptWeights559.8 MB e381a6a44696
transport/chronos/seed1.ckptWeights559.8 MB 81ae920a7922
transport/chronos/seed2.ckptWeights559.8 MB bb1efd82f816
transport/dt/seed0.ckptWeights564.5 MB 1123ef284167
transport/dt/seed1.ckptWeights564.5 MB 8feeac494b15
transport/dt/seed2.ckptWeights564.5 MB 5119a423a04a
manifest.jsonConfiguration500.1 KB —
verification/manifest.jsonConfiguration886 B —
verification/selected-checkpoints.jsonConfiguration10.8 KB —
README.mdDocumentation2.8 KB —
verification/report.mdDocumentation7.2 KB —
verification/cohorts.csvOther118.8 KB —
verification/comparison.csvOther3.9 KB —
.gitattributesRepository1.5 KB —

License and Download

License
Not stated by the source
Access
Open weights, no gate
Download size
26.9 GB
Download from Changhao Wang

Released by Changhao Wang through its official repository on Hugging Face.

Memory Requirements

PrecisionWeights in memory
As published26.9 GB

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

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