ACT (Action Chunking Transformer)
actAction Chunking with Transformers, the imitation-learning policy from the ALOHA project, in the LeRobot implementation. It is trained from scratch on your own LeRobot dataset (no pretrained base model), predicts chunks of future joint actions from camera images and robot state, and trains quickly on a single GPU. Railwail offers it for fine-tuning only, not for hosted inference.
- Status
- Unavailable
- Input → output
- Text + Image → Robot actions
- Developer
- Other
- Updated
- September 24, 2026
ACT (Action Chunking Transformer) is currently unavailable
Currently unavailable: this model has been deactivated.
You can still read the details on this page. Pick one of the available alternatives below to run a comparable model right away.
Playground
ACT (Action Chunking Transformer)
Research model
ACT (Action Chunking Transformer) is a robotics model (vision-language-action) and cannot be run through the railwail API.
About ACT (Action Chunking Transformer)
ACT (Action Chunking Transformer) is a model by Other in the Robotics / VLA category. ACT (Action Chunking Transformer) is currently not available on Railwail.
Pricing
Currently unavailable: this model has been deactivated. There is no price for this model at the moment, so it cannot be run.
API
Not available via the API
Robotics models run on robot hardware, not through the railwail API.
Specifications
- Model ID
act- Developer
- Other
- Category
- Robotics / VLA
- Input
- Text, Image
- Output
- Robot actions
- Lifecycle
- Current version
- Catalog entry updated
- September 24, 2026
Tags
- act
- aloha
- robotics
- imitation-learning
- lerobot
- fine-tunable
Use cases
Frequently asked questions
What is ACT (Action Chunking Transformer)?
ACT (Action Chunking Transformer) is a model by Other in the Robotics / VLA category. It is listed on Railwail but cannot be run at the moment.
How much does ACT (Action Chunking Transformer) cost on Railwail?
ACT (Action Chunking Transformer) cannot be run on Railwail at the moment, so there is no current price. Available alternatives with prices are listed further down this page.
How fast is ACT (Action Chunking Transformer)?
There are not enough measured runs of ACT (Action Chunking Transformer) on Railwail yet to state a run time. It depends on the input, the settings and the load at the provider.
When should I use ACT (Action Chunking Transformer)?
ACT (Action Chunking Transformer) belongs to the Robotics / VLA category. The category page lists the other models of this kind with their prices.
All models in Robotics / VLACan ACT (Action Chunking Transformer) process images?
Yes. ACT (Action Chunking Transformer) accepts images as input in addition to text.
Can I use ACT (Action Chunking Transformer) right now?
Currently unavailable: this model has been deactivated. The page stays online; available alternatives from the same category are listed further down.
All models through one API
One API key for every model on Railwail. Usage is charged from prepaid credits, 1 credit = $0.01.