Checkpoints and outputs

Every run writes checkpoints: intermediate ones at the configured interval and a final one when training completes. A cancelled run keeps its intermediate checkpoints and writes no final one.

Where they go

LoRA type	Location	Registered where
Character (video)	The video LoRA library under the models root, plus the run folder.	The bank of the character; the video LoRA list in scene settings.
Image	The run folder.	The model manager, so it appears in the Generate tab.

The LoRAs tab of the Models area lists every registered LoRA in one place; the All LoRAs link under the checkpoints opens it.

Each checkpoint row shows its step, loss, file size and hash. Copy path gives the file location for use outside Maystro; the files are standard .safetensors LoRAs.

Resuming an interrupted run

If Maystro stops during a run (a power cut, a crash or a restart), the run is marked Interrupted at step N the next time Maystro starts, and a new run can be started right away. An image (Krea 2 or FLUX.2 Klein) run that has already written a checkpoint shows Resume from step N: it continues from that checkpoint with the same data order, random state and optimizer state, as if it had never stopped. A cancelled run can be resumed the same way. Only the steps since the last checkpoint are lost; a shorter save interval loses less.

Character (video) runs train in the Vireo engine, which keeps training when only Maystro restarts: the next time Maystro starts, the run follows the engine again from the step it has reached, and a run that finished in the meantime is saved as usual, even when the engine has restarted since. If the engine stopped while the run was still training (a power cut), the run is marked Interrupted and has to be started again; these runs cannot be resumed from a checkpoint yet.

Comparing checkpoints

An intermediate checkpoint is sometimes better than the final one when the run overfits (the loss keeps falling but generations start copying dataset frames). For a character LoRA, render the same shoot with two checkpoints and compare a contact sheet of frames; keep the one whose face holds across the whole take, not the one that matches a single frame best.

Deleting

Delete a run to remove its checkpoints from disk. A LoRA already added to a character bank or fused into a character set is not affected until you remove it there.