Mixpanel and Amplitude share the product analytics market so completely that most SaaS companies evaluate both simultaneously. Both use event-based tracking, both provide funnel and retention analysis, and both have AI features for surfacing insights. The differences are meaningful at scale.
Mixpanel's retroactive analysis is its defining advantage: because it stores raw event data, you can define new metrics and funnels retroactively without re-instrumentation. Amplitude's Compass feature — which identifies the actions that correlate with long-term retention — is the most valuable single analytical tool for product managers who want evidence-based feature prioritisation rather than intuition. Mixpanel's free tier (20M events/month, unlimited seats) is the most generous in the category, making it the default for seed-stage startups. Amplitude wins at Series B+ where account-level analytics and experiment integration become priorities.