GA4 is organised around acquisition and marketing channels and plugs into the Google ecosystem; Mixpanel is organised around user behavior inside the product and has no such ecosystem. Many teams run both, which is also why the two sets of numbers disagree.

What drives Mixpanel's cost?

The number of events sent, not the number of users. That means the design of the tracking plan drives the bill more than audience growth does.

Mixpanel

Beginner

Updated Jul 11, 2026 Shahin editorial 2 min read

PronunciationEN/ˈmɪkspænəl/

Mixpanel is a product analytics platform built on events and user profiles, used mainly for funnel, retention and segmentation reporting on in-product behavior.

The data structure has three layers: an event with event properties, a user profile with profile properties, and super properties that the SDK attaches to every event automatically. A session is not a primitive here; it is derived from an inactivity window you configure, so a Mixpanel session count and a web analytics session count describe different things. Pricing is based on the volume of events sent, which is the usual reason a broad autocapture setup becomes expensive. Profile properties hold only their current value, so breaking last year's purchases down by plan shows today's plan unless the value was also written onto the event.

FAQ

Sources:Mixpanel — Documentation