# tinker.types.CheckpointBillingEvent

## *class* [**tinker.types.CheckpointBillingEvent**](https://github.com/thinking-machines-lab/tinker/blob/main/src/tinker/types/billing_usage_response.py#L53)(*[StrictBase](https://github.com/thinking-machines-lab/tinker/blob/main/src/tinker/_models.py#L76)*)

Checkpoint operations (billed per checkpoint).

**Fields:**

- [**type**](https://github.com/thinking-machines-lab/tinker/blob/main/src/tinker/types/billing_usage_response.py#L56) (*Literal['checkpoint']*)
- [**count**](https://github.com/thinking-machines-lab/tinker/blob/main/src/tinker/types/billing_usage_response.py#L58) (*int*) – Number of checkpoints in the bucket