How much storage does each artifact version use? - Weights & Biases Documentation

Only files that change between two artifact versions incur storage costs.

Consider an image artifact named animals that contains two image files, cat.png and dog.png:

images
|-- cat.png (2MB) # Added in `v0`
|-- dog.png (1MB) # Added in `v0`

This artifact receives version v0. When you add a new image, rat.png, W&B creates a new artifact version, v1, with the following contents:

images
|-- cat.png (2MB) # Added in `v0`
|-- dog.png (1MB) # Added in `v0`
|-- rat.png (3MB) # Added in `v1`

Version v1 tracks a total of 6 MB, but occupies only 3 MB of space because it shares the remaining 3 MB with v0. If you delete v1, you reclaim the 3 MB of storage associated with rat.png. If you delete v0, the storage costs of cat.png and dog.png transfer to v1, which increases its storage size to 6 MB.

Artifacts Storage

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