Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · Message Broker Software

Google Cloud Pub/Sub vs Apache Kafka

  • Updated Oct 2026
  • Both researched from official sources
  • 2 checks side by side
Higher score Google Cloud Pub/Sub #3 in Message Broker Software 9.1/10 Free plan Free plan✓ 1 of 1 features Visit Google Cloud
Apache Kafka #4 in Message Broker Software 9.0/10 Open source ✓ 0 of 1 features Visit Apache Kafka

Google Cloud Pub/Sub leads on 0 checks, Apache Kafka on 0, and 2 are even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreGoogle Cloud Pub/Sub · 9.1/10
  • Free planonly Google Cloud Pub/Sub
  • Most featuresGoogle Cloud Pub/Sub · 1 of 1

Google Cloud Pub/Sub scores higher on our rubric for message broker software: 9.1 against 9.0 out of 10; our editors rank them #3 and #4.

Google Cloud Pub/Sub is the better fit for managed cloud pub/sub. Apache Kafka is the better fit for event streaming and stream processing.

  • Google Cloud Pub/Sub fits best

    Managed cloud pub/sub

  • Apache Kafka fits best

    Event streaming and stream processing

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Google Cloud Pub/Sub 9.1/10 Visit ↗ Apache Kafka 9.0/10 Visit ↗
At a glance
Editor score 9.1 9.0
Ranking #3 in Message Broker Software #4 in Message Broker Software
Best for Managed cloud pub/sub Event streaming and stream processing
Pricing model Free plan + paid Free
Starting price — Open source
Free plan ✓ (best) Not checked yet
Free trial — —
Deployment Cloud Self-hosted
Support Tickets, Community, Docs · 24/7 Community, Docs
Integrations 9 integrations 6 integrations
Built for Small business, Mid-market, Enterprise Mid-market, Enterprise
Features Google Cloud Pub/Sub 1/1 · Apache Kafka 0/1
Dead-letter queues ✓ (best) Not checked yet
Specs
Deployment model Cloud Not checked yet
Delivery guarantees Configurable Not checked yet
Ordering guarantees Not checked yet Not checked yet
Maximum message size 10 MB Not checked yet
Supported protocols REST, gRPC Not checked yet
Our review
Pros
  • Exactly-once delivery, ordering keys, replay, and dead-letter topics
  • Pull and push subscriptions with message filtering
  • Integrations with BigQuery, Cloud Storage, Dataflow, and more
  • Replicated event storage with configurable retention and log compaction
  • Stream processing supports joins, aggregations, filters, and transformations
  • Kafka Connect links systems including Postgres, Elasticsearch, and AWS S3
Cons
  • Paid standard throughput starts at $40 per TiB monthly
  • Storage, transfer, import, export, and transformation charges can also apply
  • Cloud deployment may not suit teams seeking a self-managed broker
  • Self-hosted deployment places cluster operations on the deploying organization
  • Its broad API surface can require more architecture than a narrow broker
  • Kafka Connect integrations depend on source and sink connector setup
Our verdict

Google Cloud Pub/Sub is a fully managed real-time messaging service for exchanging messages between independent applications. It fits teams building event-driven applications, streaming pipelines, and distributed systems that need publish…

Read the review →

Apache Kafka is an open-source distributed event streaming platform for data pipelines, streaming analytics, data integration systems, and mission-critical applications. It organizes events into topics and supports publishing, consuming,…

Read the review →
  1. Google Cloud Pub/SubMessage Broker Software 9.1Free plan
  2. Apache KafkaMessage Broker Software 9.0Open source

Strengths and trade-offs

  • Google Cloud Pub/Sub — where it wins

    • Exactly-once delivery, ordering keys, replay, and dead-letter topics
    • Pull and push subscriptions with message filtering
    • Integrations with BigQuery, Cloud Storage, Dataflow, and more

    Where it doesn't

    • Paid standard throughput starts at $40 per TiB monthly
    • Storage, transfer, import, export, and transformation charges can also apply
    • Cloud deployment may not suit teams seeking a self-managed broker

  • Apache Kafka — where it wins

    • Replicated event storage with configurable retention and log compaction
    • Stream processing supports joins, aggregations, filters, and transformations
    • Kafka Connect links systems including Postgres, Elasticsearch, and AWS S3

    Where it doesn't

    • Self-hosted deployment places cluster operations on the deploying organization
    • Its broad API surface can require more architecture than a narrow broker
    • Kafka Connect integrations depend on source and sink connector setup

More comparisons

All message broker software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update