Mixpanel vs PostHog: pricing, free tiers, and where PostHog vs Mixpanel actually differ

It depends on whether you are buying a tool or consolidating a stack. PostHog is better value and broader: analytics, session replay, feature flags, experiments, surveys and error tracking arrive on one platform with one bill, and several of those are things Mixpanel charges extra for or does not sell at all. For a team currently paying for Mixpanel plus LaunchDarkly plus Sentry, PostHog can genuinely replace three invoices with one.

Mixpanel is better at the specific job of letting a non-technical product manager answer a question quickly. Its reporting interface is more polished, funnels and retention are faster to build without help, and the single meter means finance gets one number instead of ten. PostHog is unmistakably built by engineers for engineers, and teams without an engineering champion tend to find it more work to get value from. The reviews reflect this split rather than a quality gap: Mixpanel sits around 4.6 out of 5 on G2 against PostHog's 4.4, which is close enough to be noise and mostly reflects who is doing the reviewing. Pick on who will use it daily.

Yes, and PostHog's free tier is the most generous in the category by a wide margin, because it applies separately to every product. Each month you get 1 million analytics events, 5,000 web session recordings, 2,500 mobile recordings, 1 million feature flag requests, 1,500 survey responses, 100,000 error tracking exceptions, 1 million data warehouse rows and 10 GB of logs, with no credit card required.

The limits that actually end the free plan are not the volume caps. A free PostHog account is restricted to one project and one year of data retention, and support is community only. Adding a payment method lifts that to six projects and seven years of retention with email support, which is why most teams upgrade for the retention rather than the throughput. Compare that to Mixpanel, where the free plan gives you 1 million events and unlimited seats but caps you at five saved reports per seat, a limit that bites within weeks once two or three people each want a funnel and a dashboard saved. Both free tiers are real products rather than trials, and both are genuinely enough to run a small product on.

Technically yes, practically no, and this is the single most misreported fact in every comparison of these two tools. PostHog is open source and publishes a Docker Compose deployment under an MIT license, so you can run it on your own infrastructure for free.

What almost nobody writing about PostHog mentions is what PostHog itself says about that option. Its documentation states plainly that self-hosted deployments are officially unsupported, that all paid-plan features are Cloud-only, and that new deployments of the paid open source product using Kubernetes are no longer supported. There are no tagged releases either: every change ships continuously from master, so you are expected to track the latest image. PostHog's own guidance is that Cloud is the best experience for the vast majority of users. So if you shortlisted PostHog specifically because a data residency or security requirement means events must stay in your infrastructure, get that verified early. The self-hosted build gives you free-tier functionality with no support and no paid features, which is a hobbyist and evaluation route rather than the enterprise escape hatch it is usually presented as. Mixpanel does not offer self-hosting at all, so on this axis PostHog still wins, just far less decisively than the internet suggests.

Mixpanel is a product analytics tool. PostHog is a platform that includes product analytics alongside about nine other products. That is the whole difference, and everything else follows from it.

Mixpanel does one job and charges one meter for it. You send events, you build funnels, retention curves, cohorts and user paths, and you get billed per event. Anything outside behavioral analysis, including feature flags, experiment reporting and data pipelines, is a paid add-on, and surveys and error tracking are not offered at all. PostHog sells analytics, session replay, feature flags, experiments, surveys, error tracking, a data warehouse, data pipelines, logs and AI observability as separate metered products on a single platform, each with a free allowance. The practical consequence is that Mixpanel is a purchase and PostHog is a consolidation. One replaces a spreadsheet; the other replaces a procurement list. Both are event-based and both require you to instrument your product, so neither can tell you why a number moved. That answer sits in support tickets, reviews and survey replies, not in the event stream.

These three come up as a set constantly, and they separate cleanly on one question: what are you optimizing for? Mixpanel optimizes for forecastability. It is the only one with a flat published per-unit rate you can hand to finance today. Amplitude optimizes for breadth on a single tier: every plan including the free one now includes session replay, experimentation and in-app guides and surveys, with 2 million free events a month, which is double Mixpanel's free allowance. PostHog optimizes for cost and consolidation, and wins on both if your team is technical enough to run it.

A shortlist that matches how teams actually buy: pick Mixpanel if a product manager needs to self-serve analysis and nobody wants a ten-line invoice. Pick Amplitude if you want the deepest analysis plus replay, experiments and guides arriving bundled rather than as add-ons. Pick PostHog if you have engineering appetite and you are consolidating three or four tools into one bill. The wider field, including Pendo and the guidance-first tools, is covered in our product analytics tools roundup, and the head-to-heads between each pair are worth reading before you commit budget.

You can, and some teams do during a migration, but it is a harder pairing to justify than most. The two overlap almost completely on the analytics job, so running both means paying two meters for the same funnels and maintaining two tracking implementations that will drift apart within a quarter.

The arrangement that does make sense is partial: PostHog for feature flags, error tracking and session replay, Mixpanel for the analysis a product manager runs daily. That gives you PostHog's genuinely strong bundled tooling without asking your PM to leave the interface they are fast in. Even then, price the alternative honestly, because PostHog's analytics are perfectly capable and the second bill is only worth it if someone will actually use the polish they are paying for. If you are running both purely because a migration stalled, finish the migration. The far more common and more useful pairing is a behavioral tool of either kind alongside something that reads the customer voice, because that is the gap neither of these two attempts to fill.