Billing with Tableflow in Confluent Cloud

Tableflow enables you to expose data from Apache Kafka® as an Apache Iceberg™ or Delta Lake table. Tableflow is billed on two dimensions: per topic-hour and Gigabytes (GB)-processed.

Tableflow billing is enabled at a per-topic level, which includes Iceberg and Delta Lake table formats. If you enable a topic for both formats, you’re only charged once for the overall topic, not per format.

Topic-hours

The per topic-hour charge is assessed for each topic and each hour that you have Tableflow enabled. This charge covers the active management of services for dataflow, monitoring, and securing connections to external query and catalog systems.

GB-processed

GB-processed is measured as the amount of data that is read by Tableflow. This includes the data processed to perform the initial materialization of your Kafka data, and the data processed to perform compaction.

When using the upsert write mode, you are also charged for index-related processing.

Important

Tableflow upsert support will have an additional charge starting in early 2026. Contact your Confluent account team to learn more about planned upsert pricing.

Confluent Managed Storage

Optionally, you may use Confluent Managed Storage to store your Tableflow managed tables. Confluent Managed Storage is billed on several factors including the amount of data stored, the number of requests made, and data transfer costs.

Storage

Storage costs are charged based on the amount of data stored in Confluent Managed Storage.

Data transfer

Data transfer from Confluent Managed Storage to destinations that are in the same region as your source Kafka cluster are free. Data transfer from Confluent Managed Storage to all other destinations will be charged in the near future.

Requests

Read (GET) requests to Confluent Managed Storage are charged per-request.

Write (POST, PUT) requests to Confluent Managed Storage are charged per-request.

Kafka storage

Kafka storage is billed on the amount of data stored in Kafka topics. When you enable Tableflow, you are not charged for Kafka storage replication, which can give you up to ~67% effective savings.