GA4 vs Mixpanel vs Amplitude: Which Stack for a Lean Team
GA4 is free and covers acquisition. Mixpanel and Amplitude answer what happens next — and their free tiers, not their features, usually decide it.
For a lean marketing team, this is rarely a three-way choice. GA4 (Google Analytics 4) is free, already installed, and handles acquisition reporting — where traffic came from and what it cost. Mixpanel or Amplitude sits alongside it to answer the question GA4 struggles with: what specific people do after they arrive, and whether they come back.
So the real decision is which of those two you add — and for most small teams that comes down to the free tier. Mixpanel meters you on events; Amplitude meters you on monthly tracked users. The same website can sit comfortably inside one free plan and blow straight past the other.
The free tiers, side by side
Two acronyms first. An event is a single tracked action — a page view, an add-to-cart, a signup. An MTU (monthly tracked user) is one identified person seen at least once in a calendar month, no matter how many events they fire.
| GA4 (standard) | Mixpanel (free) | Amplitude (Starter, free) | |
|---|---|---|---|
| Built for | Web + app acquisition, channels, campaigns | Product and funnel analytics | Product and behavioural analytics |
| Billed on | Nothing — free tier | Events per month | Monthly tracked users |
| Free allowance | No published monthly event charge; soft limits instead | Roughly 1 million events/month (cut from 20 million in 2024) | Roughly 50,000 MTUs |
| Hard limits that bite | 500 distinct event names, 50 event-scoped custom dimensions, sampling in Explorations on large queries | Event ceiling; advanced modelling gated to paid | MTU ceiling; limited seats and saved charts |
| Raw data export | BigQuery export, free up to roughly 1 million events/day | Export available on paid tiers | Export available on paid tiers |
| Data retention | User- and event-level data: 2 or 14 months | Retained on plan terms | Retained on plan terms |
| First paid step | GA4 360, commonly reported to start near $50,000/year | From roughly $20/month | From roughly $49/month |
Treat those numbers as a starting point, not gospel. All three vendors have changed their free tiers more than once. Check Mixpanel’s pricing page, Amplitude’s pricing page and Google’s own GA4 limits documentation before you commit — especially the Mixpanel figure, which dropped sharply in 2024 and caught a lot of small teams mid-quarter.
Product analytics vs web analytics: the actual difference
Web analytics is session-shaped. It answers: how many sessions, from which channel, landing on which page, at what cost. GA4 is the dominant free tool here and it integrates with Google Ads, Search Console and BigQuery without you writing code.
Product analytics is person-shaped. It answers: of the people who signed up in March, how many were still active in June, and which first-week action predicted that. Mixpanel and Amplitude are built around this — cohorts, retention curves, funnels you can re-slice after the fact without re-tagging.
The practical split: GA4 tells you which ad to turn off. Product analytics tells you which onboarding step to rebuild. A lean team usually needs both answers, which is why “GA4 vs Mixpanel” is the wrong framing — it is GA4 plus one of them.
Do the volume maths before you pick
This takes ten minutes and saves a lot of regret. Estimate monthly events like this:
- Monthly visitors or active users
- × sessions per user per month
- × tracked actions per session
Example — a D2C store. 60,000 monthly visitors, 1.3 sessions each, 12 tracked actions per session (page view, product view, variant select, add to cart, checkout steps). That’s about 936,000 events a month — just inside a 1 million free event allowance, with no headroom for a festive-season spike. But it’s 60,000 MTUs, which is already over a 50,000 MTU free plan. For this shop, the event-metered tool is the cheaper free ride, and barely.
Example — a B2B SaaS product. 8,000 monthly active users, 40 events each = 320,000 events, and 8,000 MTUs. Comfortably free on either meter. Here you should pick on features and team preference, not price.
The pattern: high-traffic, low-engagement sites favour the MTU meter badly and the event meter moderately. Low-traffic, high-engagement products favour the MTU meter. A SaaS tool where each user fires 300 events a month will burn an event allowance long before it troubles an MTU cap.
Mixpanel vs Amplitude: how they differ in practice
Feature lists have converged. Both do funnels, retention, cohorts, session replay add-ons and warehouse connections. The differences that matter to a small team are these:
- Learning curve. Mixpanel is generally faster for a marketer to self-serve on. Amplitude has more analytical depth and correspondingly more surface area.
- Who else will use it. Amplitude is more often the incumbent in product and data teams. If your product manager already has it, adding marketing events there beats standing up a second tool.
- The meter, again. Events vs MTUs will decide your bill more than any feature will.
- Seats. Check how many people can log in on the free plan. A tool only two people can open stops being the team’s source of truth within a quarter.
If neither free tier fits and the budget is genuinely zero, look at PostHog, which offers a generous monthly free allowance and can be self-hosted — at the cost of engineering time you may not have.
The India angle
Mixpanel and Amplitude bill in US dollars, so your rupee cost moves with the exchange rate and typically attracts GST on top. At roughly ₹88 to the dollar, a $20/month plan is about ₹1,750 a month, and $49/month is about ₹4,300 — real money for a bootstrapped team, but trivially cheaper than the enterprise tier of GA4, which at commonly reported pricing lands near ₹44 lakh a year.
Indian teams also have a third path. CleverTap, MoEngage and WebEngage bundle behavioural analytics with campaign execution — push, WhatsApp, email. If your main gap is “we can see the drop-off but can’t message the people who dropped off,” one of those may replace both a product analytics tool and a separate messaging stack. If you only need analysis, they’re heavier than you need.
One more India-specific note: a large share of Indian D2C traffic is app-and-web mixed, often on low-end Android devices with flaky connections. Test that your event collection survives poor networks before you trust the funnel numbers — dropped events look identical to genuine drop-off in every tool on this list.
Common mistakes lean teams make
- Tracking everything on day one. Every extra click event eats the free allowance and moves you toward GA4’s 500-event-name ceiling. Start with 15-25 events that map to real decisions.
- Naming events on the fly.
Add to Cart,add_to_cartandAddToCartbecome three unrelated events. Write a one-page tracking plan before you instrument anything. - Not turning on the GA4 BigQuery export. GA4’s standard tier keeps user- and event-level data for a maximum of 14 months. Enable the export now and you’ll have history later; enable it in year two and the first year is gone.
- Expecting GA4 to do retention analysis. It can approximate it. It will not give you the cohort view a product analytics tool gives you, and forcing it wastes days.
- Paying before you have a decision waiting on the data. If nobody has asked a question the free tier can’t answer, the upgrade is procurement theatre.
- Ignoring consent and cookie loss. Blocked cookies and consent banners mean all three tools undercount. Compare trends, not absolutes, and never reconcile analytics against your payment gateway to the last order.
What this means for you
- Keep GA4 regardless. It’s free, it’s the common language with agencies and ad platforms, and there’s no upside to removing it.
- Do the volume maths first. Visitors × sessions × events per session, and separately your monthly user count. Those two numbers pick your tool faster than any feature comparison.
- Over roughly 50,000 monthly users with light engagement? The event-metered option is usually the cheaper free tier. Under 10,000 highly engaged users? Either works — pick on usability.
- Write the tracking plan before the first line of code. Twenty well-named events beat 200 accidental ones, in every tool.
- Switch the GA4 BigQuery export on this week. It costs nothing at small volumes and protects your history.
- Re-check pricing pages every six months. Free tiers have moved in both directions, and a 20x cut has happened before.
Frequently asked questions
Is GA4 enough on its own for a small marketing team?
For acquisition reporting, usually yes. GA4 covers channels, campaigns, landing pages and conversions at no cost. It becomes insufficient when you start asking person-level questions — which cohort retained, which first action predicts a repeat purchase — because GA4 is built around sessions rather than individual user journeys over time.
What is the difference between product analytics and web analytics?
Web analytics measures sessions and traffic sources: how many people came, from where, and what it cost. Product analytics measures individual behaviour over time: retention, cohorts, and funnels you can re-slice after collection. GA4 is web analytics; Mixpanel and Amplitude are product analytics. Most teams need both.
Mixpanel or Amplitude for a five-person marketing team?
Check the meter before the features. Mixpanel charges by events, Amplitude by monthly tracked users. High-traffic, low-engagement sites usually stay free longer on Mixpanel; low-traffic, high-engagement products usually stay free longer on Amplitude. If your product team already runs one of them, use that one.
Do Mixpanel or Amplitude replace GA4?
No. Neither connects to Google Ads and Search Console the way GA4 does, and neither is free at the scale GA4 is. The standard lean-team setup is GA4 for acquisition and one product analytics tool for behaviour, sharing a single agreed event naming convention across both.
