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Open-weight model · Robotics

Redox_200epi_subtask_pi052

by Leapshared leapshared/Redox_200epi_subtask_pi052

Redox_200epi_subtask_pi052 is an open-weight model for robotics from Leapshared, released under Gemma Terms of Use. It has 4.1B parameters. At 16-bit it needs about 9.9 GB of GPU memory, which fits on 1x MI300X from $1.85 an hour, at the lowest prices in the SAVRN Index.

OpenArm 양팔 로봇(biopenarmfollower, 카메라 3대, state·action 16차원)의 Redox 시연 200개로 체크포인트 하나가 "task 문장 → 서브태스크 문장 생성 → 그 문장을 조건으로 액션 청크(50스텝)"를 한다. task 문장 (학습에 쓴 것은 이것 하나다): 1. lift the metal plate out of the left beaker 2. move the plate over the blue solution 3.

Parameters4.1B
Context—
Weights82.9 GB
Licensegemma
AccessOpen weights
Monthly Downloads—

Runs On

What it takes to serve Redox_200epi_subtask_pi052 (4.1B parameters): the memory its weights need at each precision, and the cheapest way to rent enough data-center GPUs to hold them.

PrecisionWeightsMemory neededCheapest setupPer hourAlso fits
16-bit 8.3 GB 9.9 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 4.1 GB 5.0 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 2.1 GB 2.5 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00

Memory is the weights at that precision plus 20% for the runtime and a short context; a long context needs more. Prices are the lowest on-demand hourly rates in the SAVRN Index, read Oct 22, 2026.

Redox_200epi_subtask_pi052 on every accelerator the SAVRN Index prices, at every precision

Model Card

OpenArm 양팔 로봇(biopenarmfollower, 카메라 3대, state·action 16차원)의 Redox 시연 200개로 체크포인트 하나가 "task 문장 → 서브태스크 문장 생성 → 그 문장을 조건으로 액션 청크(50스텝)"를 한다. task 문장 (학습에 쓴 것은 이것 하나다): 1. lift the metal plate out of the left beaker 2. move the plate over the blue solution 3. point at the plate with the left hand 4. lower the plate into the blue solution 5. hold the plate still in the solution 6. raise the plate and point at it 7. put the plate into the left beaker 8. return to the home posture - lerobot PR #4184의 브랜치 codex/pi052-language-policy가 필요하다 (학습에 쓴 커밋 3298e15, lerobot 0.6.2). PyPI의 0.6.1에는 pi052 정책도 --interactive도 없다. - 그 커밋의 액션 추론은 그대로는 죽는다: TypeError: PI05Pytorch.embedprefix() takes 5 positional…

Excerpt from the card by Leapshared, licensed gemma.

Identity and Version

Repository
leapshared/Redox_200epi_subtask_pi052
Publisher
Leapshared
Task
Robotics
Modality
Control
Library
lerobot
Parameters
4.1B parameters
Languages
Not stated by the source
Revision
5c6d092dc8f070b8327a53d9233b6cef485b3b75
First published
2026-09-21
Last updated
2026-09-21

Files and Weights

60 files, 82.9 GB in total. The weights are 15 files totalling 82.9 GB in safetensors.

Weights15 files · 82.9 GB
Configuration26 files · 128.3 KB
Tokenizer15 files · 3.7 MB
Documentation1 file · 11.5 KB
Other2 files · 1.4 KB
Repository1 file · 1.5 KB
Every file
FileTypeSizeSHA-256
checkpoints/015000/pretrained_model/model.safetensorsWeights16.6 GB 7c3c266abd88
checkpoints/015000/pretrained_model/policy_postprocessor_step_0_unnormalizer_processor.safetensorsWeights9.6 KB fdb692be9b72
checkpoints/015000/pretrained_model/policy_preprocessor_step_3_normalizer_processor.safetensorsWeights9.5 KB 4aca0450a0f2
checkpoints/020000/pretrained_model/model.safetensorsWeights16.6 GB 4a26775f2bf5
checkpoints/020000/pretrained_model/policy_postprocessor_step_0_unnormalizer_processor.safetensorsWeights9.6 KB fdb692be9b72
checkpoints/020000/pretrained_model/policy_preprocessor_step_3_normalizer_processor.safetensorsWeights9.5 KB 4aca0450a0f2
checkpoints/025000/pretrained_model/model.safetensorsWeights16.6 GB f350a7bd6348
checkpoints/025000/pretrained_model/policy_postprocessor_step_0_unnormalizer_processor.safetensorsWeights9.6 KB fdb692be9b72
checkpoints/025000/pretrained_model/policy_preprocessor_step_3_normalizer_processor.safetensorsWeights9.5 KB 4aca0450a0f2
checkpoints/030000/pretrained_model/model.safetensorsWeights16.6 GB 15d3c9e15fc2
checkpoints/030000/pretrained_model/policy_postprocessor_step_0_unnormalizer_processor.safetensorsWeights9.6 KB fdb692be9b72
checkpoints/030000/pretrained_model/policy_preprocessor_step_3_normalizer_processor.safetensorsWeights9.5 KB 4aca0450a0f2
model.safetensorsWeights16.6 GB 15d3c9e15fc2
policy_postprocessor_step_0_unnormalizer_processor.safetensorsWeights9.6 KB fdb692be9b72
policy_preprocessor_step_3_normalizer_processor.safetensorsWeights9.5 KB 4aca0450a0f2
action_tokenizer/processor_config.jsonConfiguration253 B —
checkpoints/015000/pretrained_model/action_tokenizer/processor_config.jsonConfiguration253 B —
checkpoints/015000/pretrained_model/config.jsonConfiguration5.4 KB —
checkpoints/015000/pretrained_model/policy_postprocessor.jsonConfiguration780 B —
checkpoints/015000/pretrained_model/policy_preprocessor.jsonConfiguration6.1 KB —
checkpoints/015000/pretrained_model/train_config.jsonConfiguration12.0 KB —
checkpoints/020000/pretrained_model/action_tokenizer/processor_config.jsonConfiguration253 B —
checkpoints/020000/pretrained_model/config.jsonConfiguration5.4 KB —
checkpoints/020000/pretrained_model/policy_postprocessor.jsonConfiguration780 B —
checkpoints/020000/pretrained_model/policy_preprocessor.jsonConfiguration6.1 KB —
checkpoints/020000/pretrained_model/train_config.jsonConfiguration12.0 KB —
checkpoints/025000/pretrained_model/action_tokenizer/processor_config.jsonConfiguration253 B —
checkpoints/025000/pretrained_model/config.jsonConfiguration5.4 KB —
checkpoints/025000/pretrained_model/policy_postprocessor.jsonConfiguration780 B —
checkpoints/025000/pretrained_model/policy_preprocessor.jsonConfiguration6.1 KB —
checkpoints/025000/pretrained_model/train_config.jsonConfiguration12.0 KB —
checkpoints/030000/pretrained_model/action_tokenizer/processor_config.jsonConfiguration253 B —
checkpoints/030000/pretrained_model/config.jsonConfiguration5.4 KB —
checkpoints/030000/pretrained_model/policy_postprocessor.jsonConfiguration780 B —
checkpoints/030000/pretrained_model/policy_preprocessor.jsonConfiguration6.1 KB —
checkpoints/030000/pretrained_model/train_config.jsonConfiguration12.0 KB —
config.jsonConfiguration5.4 KB —
policy_postprocessor.jsonConfiguration780 B —
policy_preprocessor.jsonConfiguration6.1 KB —
rollout_pi052.pyConfiguration5.4 KB —
train_config.jsonConfiguration12.0 KB —
README.mdDocumentation11.5 KB —
pi052_embed_prefix.patchOther977 B —
redox_subtasks.txtOther400 B —
.gitattributesRepository1.5 KB —
action_tokenizer/bpe_tokenizer/tokenizer.jsonTokenizer738.9 KB —
action_tokenizer/bpe_tokenizer/tokenizer_config.jsonTokenizer333 B —
action_tokenizer/processing_action_tokenizer.pyTokenizer6.1 KB —
checkpoints/015000/pretrained_model/action_tokenizer/bpe_tokenizer/tokenizer.jsonTokenizer738.9 KB —
checkpoints/015000/pretrained_model/action_tokenizer/bpe_tokenizer/tokenizer_config.jsonTokenizer333 B —
checkpoints/015000/pretrained_model/action_tokenizer/processing_action_tokenizer.pyTokenizer6.1 KB —
checkpoints/020000/pretrained_model/action_tokenizer/bpe_tokenizer/tokenizer.jsonTokenizer738.9 KB —
checkpoints/020000/pretrained_model/action_tokenizer/bpe_tokenizer/tokenizer_config.jsonTokenizer333 B —
checkpoints/020000/pretrained_model/action_tokenizer/processing_action_tokenizer.pyTokenizer6.1 KB —
checkpoints/025000/pretrained_model/action_tokenizer/bpe_tokenizer/tokenizer.jsonTokenizer738.9 KB —
checkpoints/025000/pretrained_model/action_tokenizer/bpe_tokenizer/tokenizer_config.jsonTokenizer333 B —
checkpoints/025000/pretrained_model/action_tokenizer/processing_action_tokenizer.pyTokenizer6.1 KB —
checkpoints/030000/pretrained_model/action_tokenizer/bpe_tokenizer/tokenizer.jsonTokenizer738.9 KB —
checkpoints/030000/pretrained_model/action_tokenizer/bpe_tokenizer/tokenizer_config.jsonTokenizer333 B —
checkpoints/030000/pretrained_model/action_tokenizer/processing_action_tokenizer.pyTokenizer6.1 KB —

License and Download

License
gemma
Access
Open weights, no gate
Download size
82.9 GB
Download from Leapshared

Released by Leapshared through its official repository on Hugging Face.

Built From

  • Derived from lerobot/pi052_base

Memory Requirements

PrecisionWeights in memory
As published82.9 GB
16-bit8.3 GB
8-bit4.1 GB
4-bit2.1 GB

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

Questions About Redox_200epi_subtask_pi052

How much GPU memory does Redox_200epi_subtask_pi052 need?

About 9.9 GB at 16-bit and 2.5 GB at 4-bit: the weights (4.1B parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run Redox_200epi_subtask_pi052 on?

At 16-bit, 1x MI300X from $1.85 an hour; at 4-bit, 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.

Can I use Redox_200epi_subtask_pi052 commercially?

Yes, with conditions. Redox_200epi_subtask_pi052 is released under Gemma Terms of Use. Gemma models are released under Google's Gemma Terms of Use, which permit commercial use and redistribution subject to the Gemma Prohibited Use Policy, whose restrictions must be passed on to anyone the model is distributed to.

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