What does each Confluent Cloud invoice line_type actually bill for? Sanity-checking my mapping

Confluent Cloud
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I’ve been reconciling Confluent Cloud invoices line by line, mapping every line_type in the billing CSV to what it actually meters. I’d like to check my understanding before relying on it.

line_type I think it bills Unit
KAFKA_NUM_CKUS / KAFKA_NUM_ECKUS Whole-cluster capacity CKU-hour
KAFKA_STORAGE Retained bytes; replication already included GB-hour
KAFKA_NETWORK_READ / _WRITE Network egress / ingress GB
KAFKA_PARTITION Partitions beyond the free allowance (Basic/Standard only?) partition-hour
CONNECT_NUM_TASKS Connector tasks, whether moving data or not task-hour
CONNECT_THROUGHPUT Bytes processed by the connector GB
FLINK_NUM_CFU Flink compute CFU-hour
GOVERNANCE_BASE Schema Registry / Stream Governance hour

A few things I’m unsure about:

  1. Storage and replication: Is KAFKA_STORAGE measured as logical retained bytes, with RF3 already reflected in the price? My assumption is that replication-factor changes cannot reduce this cost in Confluent Cloud because RF is fixed at 3.
  2. Dedicated partitions: I don’t see KAFKA_PARTITION for Dedicated clusters. Does that mean partitions are covered by CKU capacity rather than billed separately?
  3. Connector tasks: Does CONNECT_NUM_TASKS bill for provisioned connector tasks regardless of whether the connector is actually moving bytes? In other words, would a paused—but not deleted—connector still incur task-hour charges?
  4. Negative lines / credits: Do credits or adjustments ever appear as negative lines in the CSV, or are they handled elsewhere?

If you’ve reconciled an invoice against these fields, I’d appreciate any confirmation or corrections.

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hey @mithrandirr

not sure if you already did but in case you didn’t :wink:

did you check

best,

michael

3

Michael — thank you. That was the page I needed, and I clearly hadn’t read it closely enough.

One thing I’m still unsure about: does the invoice CSV from Billing & Payment use the same vocabulary as the cost-allocation export? Cost allocation documents billing_metric in CamelCase (for example, KafkaNumCKUs) and product_type in lowercase hyphenated form (for example, stream-governance). I don’t know whether the invoice export uses those same strings or maintains its own set. If anyone has a recent invoice CSV and can paste just the header row—column names only, no values—that would settle it.