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testcritic

Mixpanel vs PostHog

Feature checklists rarely decide anything. What decides it is the pricing metric, who has to write the tests, and which limitation you can live with.

Entry price

Free tier available

Free tier

Free tier available

Free tier

What drives the bill

The metric that actually scales your invoice.

Growth now starts at $0 and scales with event volume up to 20M events a month, with the first million free; annual billing saves around $480 a year. Enterprise is quote-based. Event-volume pricing stays generous for early products but climbs with a chatty event schema.

Usage-based pricing per product with a substantial free tier; most small teams stay free indefinitely.

Free tier

Free forever, up to 1M events a month.

Large monthly free allowance across every product, plus free self-hosting.

Open source

MIT (core) / proprietary enterprise modules

Self-hostable

No-code authoring

Languages

JavaScriptTypeScriptPythonJavaSwiftKotlinPHP
JavaScriptTypeScriptPythonJavaGoRubyPHPSwiftKotlin

Platforms

WebAPIiOSAndroid
WebAPIiOSAndroid

Fits teams

StartupScale-up / mid-marketEnterprise
Solo / side projectStartupScale-up / mid-marketEnterprise

Adoption

Category standard

Mixpanel · since 2009

Widely used

PostHog · since 2020

Strengths

  • Genuinely self-serve — product managers build their own reports without help.
  • Large free tier that carries an early-stage product a long way.
  • Fast query performance on large event volumes.
  • Replaces four or five separate subscriptions with one bill and one SDK.
  • Free tier is large enough for real production use at startup scale.
  • Open source with a credible self-hosting path.

Limitations

  • Requires disciplined event instrumentation and naming.
  • Weaker on user-level qualitative investigation than replay tools.
  • Costs scale with event volume, which grows faster than user count.
  • Individual modules are less deep than category specialists.
  • Self-hosting at scale is a serious infrastructure undertaking.
  • The product surface changes fast, which means occasional churn.

Best for

Product teams that want fast, self-serve behavioural reporting.

Startups and scale-ups consolidating analytics, replay and flags into one platform.

All of these integrate with: Segment, Snowflake, BigQuery, Slack.

Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.