Pricing

Momento Cache uses simple, capacity-based pricing: you pay for the size of your cluster and nothing else. There are no separate charges for connections, request traffic, or data transfer — including cross-AZ traffic, which is included in the capacity price.

Capacity

For Flex, Pool capacity is the configured Valkey maxmemory on each primary shard multiplied by the number of primary shards. Replicas do not add Pool capacity. Billable Flex usage includes the configured maxmemory on every deployed primary and replica.

For Cluster, usage is the type and count of every deployed instance, including replicas. See Provisioning and sizing for how the variants map to a Pool shape.

Variant	Billable usage	Price
Flex	Aggregate deployed Valkey maxmemory across primary and replica nodes	$30.00 per GiB-month
Cluster	Every deployed instance	AWS instance list price × 3.6

Memory utilization is separate from capacity and billable usage. It measures live used_memory relative to deployed maxmemory.

Examples

• Cluster example: one t4g.small primary with no replica costs $0.0168/hour × 3.6 = $0.06048/hour, or about $43.55 for an illustrative 720-hour month.
• Flex HA example: three 1-GiB primary shards with one replica per shard provide 3 GiB of Pool capacity and use 6 billable GiB, for $180/month.

These are compact pricing examples, not statements about the smallest possible deployment.

How this maps to your usage

• Flex replicas increase billable usage without increasing Pool capacity.
• Cluster shards and replicas add deployed instances and therefore increase Cluster usage.
• Flex usage and Cluster instance usage follow the deployed shape over time.