Mixpanel vs PostHog

Mixpanel

Event analytics that answers how people use your product

Mixpanel is an event-based product analytics platform: it records what users do inside a product as discrete events, then answers questions about funnels, retention, cohorts, and user flows on top of that event stream. The distinction that matters is event analytics versus page analytics. A tool like Google Analytics is built around pageviews and sessions, which answers marketing questions well and product questions badly. Mixpanel is built around a user doing a thing - signed_up, created_project, invited_teammate - so a product team can ask where in a five-step onboarding people drop out, whether the users who invite a teammate in week one retain better, and which cohort a feature actually moved. Pricing as of 2026: the Free plan is free forever with up to 1 million events per month, 10,000 session replays per month, and core funnel and retention analysis, with no credit card required. The Growth plan starts at $0 and scales with volume, covering up to 20 million events and 500,000 session replays per month, and adds behavioural cohorts, unlimited saved metrics, and multi-touch attribution. Enterprise is quote-based, scales to 1 trillion events per month, and adds anomaly detection, feature flags, experimentation, and security controls. Mixpanel reports more than 29,000 companies on the platform. The 1 million free events per month is the number that decides most early-stage evaluations. It is genuinely enough to run a pre-product-market-fit startup on indefinitely, which is why Mixpanel is common in seed-stage stacks. Who it is for: product managers and growth teams who need to answer behavioural questions rather than traffic questions, at companies past the point where reading the database directly is fast enough. The main implementation caveat is that event analytics is only as good as the tracking plan. Mixpanel gives you nothing useful until someone decides what the events are and instruments them consistently, and a sloppy taxonomy is expensive to fix later. Budget the design work, not just the tool. How it compares: Amplitude is the closest peer and the usual head-to-head, generally stronger on advanced behavioural analysis and enterprise governance. PostHog bundles analytics with session replay, feature flags, and experimentation in one open-source platform and is the more popular choice among engineering-led teams. Heap auto-captures every interaction, which removes the tracking-plan burden but produces noisier data. Google Analytics 4 is free and unavoidable for marketing attribution but is not a product analytics tool. Pick Mixpanel when the questions are about behaviour inside the product and someone owns the tracking plan.

PostHog

Open-source product analytics, session replay, and feature flags

PostHog is an open-source product platform that bundles product analytics, session replay, feature flags, experimentation, surveys, error tracking, and a data warehouse into one tool, available as cloud or self-hosted. The problem it targets is stack sprawl. A typical product team wires up Mixpanel or Amplitude for analytics, LaunchDarkly for feature flags, FullStory or Hotjar for session replay, Sentry for errors, and Typeform for surveys - five contracts, five SDKs, five sets of user identities that do not join up. PostHog's bet is that these are all the same data, so they belong in one product where you can watch the session replay of the user who dropped out of the funnel, behind the feature flag you shipped last week. Pricing is usage-based with a large free tier, and PostHog states that more than 90% of its customers use it for free. The monthly free tier resets every month and applies on every plan, including paid ones: 1 million analytics events, 5,000 session recordings, 1 million feature flag requests, 100,000 error tracking exceptions, 1,500 survey responses, 1 million data warehouse rows, 10,000 pipeline events, 100,000 AI observability events, and 10 GB of ingested logs. No credit card is required, and the free plan includes 1 project, 1-year data retention, unlimited team members, and a choice of US (Virginia) or EU (Frankfurt) hosting. Past the free tier, pricing is per unit and the rate falls with scale. Product analytics starts at $0.00005 per event for the first 1-2 million events beyond the free tier, dropping through $0.0000343 (2-15 million), $0.0000295 (15-50 million), $0.0000218 (50-100 million), $0.0000150 (100-250 million), to $0.0000090 per event above 250 million. Adding a card also raises the account to 6 projects, 7-year data retention, and email support. Per-product billing limits can be set so a traffic spike cannot produce a surprise invoice. Who it is for: engineering-led product teams, especially at startups, who would rather instrument once and get five tools than integrate five vendors. Self-hosting suits teams with data residency constraints, though PostHog's EU cloud region covers most of that need without the operational burden. How it compares: Mixpanel and Amplitude are more refined as pure analytics products and are the better choice if analytics is all you need. LaunchDarkly is a stronger standalone feature-flag platform with more governance. Sentry is a better error tracker. PostHog rarely wins any single category head-to-head - it wins on consolidation, price at low volume, and the fact that the tools share one user identity. Evaluate it when you are about to buy your third point solution.