Mixpanel vs PostHog: Which Analytics Tool Fits You?
Mixpanel and PostHog both start free and both track product usage, but they are built around different ideas of what an analytics tool should be. Mixpanel focuses on being the best dedicated event-analytics product, with polished funnels, retention and cohort reports. PostHog bundles analytics together with feature flags, session replay, surveys and error tracking on one free allowance, aiming to replace several separate tools at once.
Mixpanel and PostHog both offer genuinely usable free tiers and scale with usage rather than seats, but they solve different problems. Mixpanel is the sharper choice if you want a dedicated, polished analytics product and already have separate tools for flags and replay. PostHog is the better fit if you would rather run analytics, feature flags, session replay and error tracking from one platform and one bill.
Side-by-side
| Mixpanel | PostHog | |
|---|---|---|
| Category | Analytics | Analytics |
| Pricing model | Freemium | Freemium |
| Pricing model | Priced by monthly tracked users and event volume; unlimited seats on every plan | Pay-as-you-go per product (analytics, replay, flags each billed separately); unlimited seats |
| Free tier | Free forever: up to 1M events/month, 10K session replays/month, up to 10 active feature flags | Free forever: up to 1M analytics events/month, 5K session replays/month, 1M feature-flag requests/month |
| Products included | Analytics, session replay, feature flags, experiments | Analytics, session replay, feature flags, surveys, error tracking and a data warehouse, all in one platform |
| Open source | Closed source, hosted only | Open source, with a self-hosted option alongside the hosted cloud |
| Strongest at | Deep funnel, retention and cohort analysis with a mature, polished UI | Consolidating several product tools (analytics, flags, replay, errors) into one |
| Enterprise pricing | Custom, sales-assisted | Custom, sales-assisted at high volume |
Choose Mixpanel if…
- You want a dedicated, polished analytics tool and are comfortable paying by monthly tracked users as you scale
- Your team already uses separate tools for feature flags and session replay and just needs strong event analytics
Choose PostHog if…
- You want one platform for analytics, feature flags, session replay and error tracking instead of stitching several tools together
- You prefer transparent, self-serve pay-as-you-go pricing without a sales call as usage grows
Pricing
- Mixpanel: Free forever up to 1M events/month with unlimited seats; the Growth tier scales with usage beyond that; Enterprise is custom-priced. (mixpanel.com)
- PostHog: Free forever up to 1M analytics events/month (plus separate free allowances for replay, flags, surveys and error tracking); usage beyond the free tier is billed per product; no per-seat charge. (posthog.com)
Frequently asked questions
Is Mixpanel or PostHog better for a small startup?
Both have usable free tiers for early-stage products. Mixpanel gives a generous free allowance for analytics alone; PostHog gives a free allowance across analytics, replay, flags and error tracking together, which can go further if you would otherwise pay for several separate tools.
Does PostHog replace the need for a separate feature-flag tool?
Yes. Feature flags are part of PostHog's same free allowance and platform, so most teams do not need a dedicated flagging tool alongside it.
Can I switch from Mixpanel to PostHog later?
Both support standard event-tracking SDKs and APIs, so migrating event schemas is possible, though historical data does not transfer automatically between the two platforms.
Sources
- mixpanel.com https://mixpanel.com/pricing/
- posthog.com https://posthog.com/pricing
- posthog.com https://posthog.com/blog/posthog-vs-mixpanel