Is PostHog or Redpanda better?

Neither clearly leads. PostHog starts at Free and Redpanda at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, PostHog or Redpanda?

PostHog starts at Free and Redpanda at Free.

Does PostHog or Redpanda run on more platforms?

PostHog runs on Web, Ios, Android, Api. Redpanda runs on Linux, Docker, Kubernetes, Self-hosted.

Can I use PostHog for free?

Both have a free tier, so you can try either at no cost before committing.

What is PostHog best used for?

PostHog is most often used for product analytics, feature experimentation, user behavior tracking, a/b testing. Of those, product analytics and feature experimentation are not what Redpanda is typically brought in for.

What can PostHog do that Redpanda cannot?

PostHog covers Product analytics, Session recording, Feature flags, A/B testing. Redpanda covers Kafka API compatible, No JVM or ZooKeeper, Thread-per-core, Built-in HTTP proxy and schema registry.

Technology · head to head

PostHog vs Redpanda

PostHog

Technology

The single platform to analyze, test, observe, and deploy new features

From: Free
Rated: -

Full review Website

Redpanda

Databases

Kafka-compatible streaming platform with no ZooKeeper or JVM

From: Free
Rated: -

Full review Website

The short version

Each has a real cost: PostHog the free tier covers 1M events, 5K web session recordings and 2.5K mobile recordings per month before usage-based billing starts; Redpanda the community edition is source-available rather than OSI open source, which matters for some procurement
They diverge on capability: PostHog covers Product analytics, Redpanda covers Kafka API compatible.
Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which PostHog and Redpanda actually diverge.

Attributes where PostHog and Redpanda differ
Attribute	PostHog	Redpanda
Pricing model	usage-based	Source-available community edition with paid enterprise and cloud tiers
Platforms	Web, Ios, Android, Api	Linux, Docker, Kubernetes, Self-hosted
Category	Technology	Databases
Founded	2020	Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in PostHog

Product analytics
Session recording
Feature flags
A/B testing
Heatmaps
SQL access
Data warehouse
Apps platform

Only in Redpanda

Kafka API compatible
No JVM or ZooKeeper
Thread-per-core
Built-in HTTP proxy and schema registry

What people use each for

The jobs each tool is most often brought in to do.

PostHog

Product analyticsnot Redpanda
Feature experimentationnot Redpanda
User behavior trackingnot Redpanda
A/B testingnot Redpanda
Debug production issuesnot Redpanda

Redpanda

Kafka workloads where the operational cost of running Kafka is the blockernot PostHog
Latency-sensitive streaming where tail latency mattersnot PostHog
Smaller teams wanting streaming without a dedicated platform groupnot PostHog

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

PostHog

The free tier covers 1M events, 5K web session recordings and 2.5K mobile recordings per month before usage-based billing starts
Accounts without a card on file are limited to 1 project; adding one raises it to 6
Data retention is 1 year until a card is added, which extends it to 7 years
Support is community-only until the account is on a paid plan
Error tracking is capped at 100K exceptions and surveys at 1500 responses per month on the free tier

Redpanda

The community edition is source-available rather than OSI open source, which matters for some procurement
Kafka API compatibility is high but not total, and deep ecosystem tools can hit gaps
Smaller community than Kafka, so fewer people have solved your problem before
Some operational and tiered-storage features are enterprise-only

Pricing, plan by plan

PostHog

Free

FreeFree
- 1M events/month
- 5K sessions/month
- Unlimited users
Paid$undefined/month
- $0.00031/event
- $0.005/session
- Advanced permissions
Enterprise$undefined/month
- SAML SSO
- Advanced security
- Dedicated support

Redpanda

Free

CommunityFree
- Kafka-compatible broker
- Single binary
- Community support

Which should you pick?

Choose PostHog if

You need product analytics.
You want to start without paying.
You work on Web, Ios, Android, Api.
You also want session recording.

PostHog review

Choose Redpanda if

You need kafka api compatible.
You want to start without paying.
You work on Linux, Docker, Kubernetes, Self-hosted.
You also want no jvm or zookeeper.

Redpanda review

Questions people ask

Is PostHog or Redpanda better?: Neither clearly leads. PostHog starts at Free and Redpanda at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, PostHog or Redpanda?: PostHog starts at Free and Redpanda at Free.
Does PostHog or Redpanda run on more platforms?: PostHog runs on Web, Ios, Android, Api. Redpanda runs on Linux, Docker, Kubernetes, Self-hosted.
Can I use PostHog for free?: Both have a free tier, so you can try either at no cost before committing.
What is PostHog best used for?: PostHog is most often used for product analytics, feature experimentation, user behavior tracking, a/b testing. Of those, product analytics and feature experimentation are not what Redpanda is typically brought in for.
What can PostHog do that Redpanda cannot?: PostHog covers Product analytics, Session recording, Feature flags, A/B testing. Redpanda covers Kafka API compatible, No JVM or ZooKeeper, Thread-per-core, Built-in HTTP proxy and schema registry.

Answered from the vendors’ own pages

PostHog: What does PostHog's free tier include per month?

PostHog free tier includes: 1M analytics events, 5K session replays, 1M feature flag requests, 100K error tracking exceptions, 1,500 survey responses, 1M data warehouse rows, 10K data pipeline events, 100K AI observability events, 500 PostHog AI credits, 10K workflow messages, and 10GB log ingestion. Source: https://posthog.com/pricing

Source

Redpanda: Is Redpanda free?

A community edition is free and source-available. Enterprise features and Redpanda Cloud are paid, and the licence is not OSI open source.

PostHog: How much data retention does PostHog provide on paid plans?

PostHog free tier provides 1-year data retention. Pay-as-you-go plans offer 7-year data retention across all projects, enabling longer historical analysis. Source: https://posthog.com/pricing

Source

Redpanda: Can I use my Kafka clients?

Yes. Redpanda implements the Kafka API, so existing clients and most tooling connect without changes.

PostHog: What percentage of PostHog users stay on the free tier?

PostHog states that 97% of companies use PostHog for free, indicating extensive free tier adoption. However, specific per-unit pricing rates for overages on paid plans are not published. Source: https://posthog.com/pricing

Source

Redpanda: Why remove ZooKeeper and the JVM?

Both are significant sources of Kafka’s operational burden — tuning, coordination and failure modes. Removing them is the core of Redpanda’s pitch.

PostHog: When does PostHog provide priority support on paid plans?

PostHog provides email or Slack support for accounts exceeding $2,000/month on pay-as-you-go plans. Specific response times and support SLAs are not detailed on their pricing page. Source: https://posthog.com/pricing

Source

PostHog vs Redpanda

PostHog

Redpanda

The short version

Where they differ

What each one covers

Only in PostHog

Only in Redpanda

What people use each for

PostHog

Redpanda

Where each one falls short

PostHog

Redpanda

Pricing, plan by plan

PostHog

Redpanda

Which should you pick?

Choose PostHog if

Choose Redpanda if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on PostHog

More on Redpanda

Keep looking

Other head to heads