Google Cloud Pub/Sub

Google Cloud Pub/Sub is ranked #3 of 38 in message broker software on The Geeks Club. It runs on API, Web. There is a free plan. A free trial is offered. Paid plans start at $40/mo.

Google Cloud Pub/Sub plans and pricing

All plans

Free usage allowance Free 10 GiB throughput cloud.google.com · 20 Sept 2026

Pay-as-you-go throughput $40/mo After the first 10 GiB per calendar month Standard message delivery throughput cloud.google.com · 20 Sept 2026

Free monthly tier Free monthly First 10 GB of data per month cloud.google.com · 1 Oct 2026

Pay-as-you-go $40/mo usage-based monthly Beyond 10 GB: $40 per TB · storage $0.27 per GiB-month cloud.google.com · 1 Oct 2026

Compared on message broker software

Free plan: Yes
Deployment model: cloud
Delivery guarantees: configurable
Dead-letter queues: Yes
Maximum message size: 10 MB
Supported protocols: REST, gRPC

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Google Cloud Pub/Sub

Messaging service: Pub/Sub is an asynchronous and scalable messaging service that decouples services producing messages from services processing them.
Latency: Pub/Sub communication typically has latencies on the order of 100 milliseconds.
Use cases: Pub/Sub is used for streaming analytics, data integration pipelines, service integration middleware, and parallel task queues.
Delivery reliability: Synchronous cross-zone message replication and per-message receipt tracking provide at-least-once delivery at any scale.
Automatic scaling: Pub/Sub has no shards or partitions and uses automatic provisioning after you set your quota.
Exactly-once processing: Dataflow supports reliable exactly-once processing of Pub/Sub streams.
Integrations: Google Cloud integrations include Dataflow, BigQuery, Cloud Storage, Cloud Functions, Cloud Run, App Engine, Cloud Logging, Cloud Monitoring, Workflows, and Eventarc.
Third-party integrations: Listed third-party integrations include Splunk, Datadog, Informatica, Confluent Cloud, Apache Kafka, Elastic, Databricks, and ServiceNow.
Message controls: Pub/Sub supports seek and replay, dead letter topics, and attribute-based message filtering.
Security: Pub/Sub offers fine-grained access controls, end-to-end encryption, and HIPAA compliance.
APIs and libraries: Pub/Sub uses standard gRPC and REST APIs and provides client libraries for several languages, with the product page stating seven languages.
Authentication: Pub/Sub supports client libraries, the Google Cloud CLI, and REST, and does not support API keys as an authentication method.
Intended users: Pub/Sub is intended for service-to-service communication rather than direct communication with end-user or IoT clients.
Support resources: Google Cloud provides Pub/Sub documentation, community forums, support, release notes, and system status resources.
Price from: $40/mo

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Where it ranks on The Geeks Club

Best Message Broker Software in 2026#3 of 38
Best Message Queue (MQ) Software in 2026#4 of 27
Best Schema Registry Software in 2026#3 of 23

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Sources

docs.cloud.google.com/pubsub/docs/overview· checked 1 Oct 2026
cloud.google.com/pubsub· checked 1 Oct 2026
cloud.google.com/pubsub/integrations· checked 1 Oct 2026
docs.cloud.google.com/pubsub/docs/authentication· checked 1 Oct 2026
cloud.google.com/pubsub/pricing· checked 20 Sept 2026