Google Analytics 4 (GA4) vs Amplitude: Which to Pick in 2026
Independent 2026 comparison from Empire325 Marketing — the agency that implements both Google Analytics 4 (GA4) and Amplitude for enterprise clients. We open with the verdict so you can decide in 30 seconds, then expand with the detail.
Side by side
Google Analytics 4 (GA4)
Google's free event-based web and app analytics.
Best for
Marketing teams needing channel attribution, acquisition reporting, and SEO measurement at no cost.
Amplitude
Product analytics platform for digital products.
Best for
Product and growth teams needing retention curves, funnel analysis, and behavioral cohorts.
Google Analytics 4 (GA4) vs Amplitude: side-by-side comparison
Buyer dimensions with sourced, dated facts. Pricing and product specifics are volatile — every figure is stated as a point-in-time value (“as of 2026, per <source>”), not a permanent price. Verify against the linked source before quoting.
| Dimension | Google Analytics 4 (GA4) | Amplitude | Source (as of 2026) |
|---|---|---|---|
| Primary purpose | Marketing & web/app analytics: acquisition, channel attribution, conversions | Product analytics: in-product user behavior, feature adoption, growth | Vendor positioning, 2026 |
| Entry cost | $0 — standard GA4 is free | Free "Starter" tier; paid "Plus" publicly listed around $49/mo (annual) | GA4 is free (Google, 2026); Amplitude Plus ~$49/mo per Amplitude pricing page & 2026 pricing guides (Userpilot, Vendr), checked Jul 2026 — point-in-time, re-verify |
| Free-tier caps | Effectively unlimited standard collection; native BigQuery export ~1M events/day on standard | Free Starter capped ~10,000 MTUs / 2M events per month; includes 1,000 session replays/mo + unlimited feature flags | GA4 docs, 2026; Amplitude pricing page + 2026 pricing guides (Userpilot, Vendr), checked Jul 2026 — re-verify current terms |
| Enterprise / top tier | Google Analytics 360 — no public price; third-party reporting commonly cites contracts starting ~$50k/yr | Growth/Enterprise quoted on MTU volume; third-party aggregators cite ~$30k–$150k+ ACV | Not official — industry/aggregator estimates (Analytify, Vendr, Userpilot), 2026; Google does not publish 360 pricing |
| Pricing model | Flat: free standard vs negotiated GA360 | Usage-based on Monthly Tracked Users (MTUs); cost scales with tracked users/events | Vendor pricing pages, 2026 |
| Product-analytics depth | Basic funnels/retention; deeper behavioral questions hit limits and push you to BigQuery/SQL | First-class, self-serve funnels, retention curves, behavioral cohorts, path analysis | GA4-vs-Amplitude analyses, 2026 |
| Data sampling | Explorations apply sampling above ~10M events per query on standard properties; BigQuery export is unsampled raw data | Analyses run on event-level data, not GA4-style report sampling | GA4 limits references (Google support docs), 2026 |
| Data retention | Standard: up to 14 months (Explorations); GA360: up to 50 months. Standard aggregate reports kept longer | Varies by plan/contract; free Starter listed around 12 months in 2026 guides (verify) | Google Analytics retention docs, 2026; Amplitude 2026 pricing guides (verify) |
| Raw data / warehouse | Free native BigQuery export of unsampled raw events (available to all standard properties since 2023) | Warehouse import/export + CDP on higher tiers; can ingest GA4's BigQuery export | Google, 2023 rollout; Amplitude platform docs, 2026 |
| Session replay & experimentation | None natively — analytics only | Session Replay, Experiment (feature flags / A-B), CDP, and Guides & Surveys (from Command AI) in the platform | Amplitude product pages; Guides & Surveys launched Feb 2025 (Command AI) |
| Event-name limits | ~500 distinct event names per property (standard) | No comparable hard event-name cap; taxonomy-driven | GA4 limits references, 2026 |
| Company / position | Google's analytics standard; dominant install base | Public company (NASDAQ: AMPL); product-analytics category leader | Amplitude investor materials, 2026 |
Sources
- Amplitude pricing (official)
- Amplitude Pricing in 2026: What You'll Pay at Each Tier — Userpilot
- Amplitude Software Pricing & Plans 2026 — Vendr
- GA4 vs Amplitude Analytics Comparison Guide — McGaw
- GA4 BigQuery export: unsampled events, free for standard properties (2023 rollout) — Google Analytics Help
- GA4 limits: ~500 event names per property, 10M-event exploration sampling threshold — Consultant Analytics
- GA4 data retention (14 months standard / 50 months GA360) — Whatagraph
- Google Analytics pricing: Free vs 360 (industry estimate, ~$50k+/yr) — Analytify
- Amplitude Session Replay & platform (Analytics, Session Replay, CDP, Experiment) — Amplitude
- Amplitude launches Guides and Surveys (Command AI), Feb 11 2025 — BusinessWire
How we compared
How we compared: We evaluated GA4 and Amplitude on the dimensions that drive a real buying decision — primary purpose, entry cost, free-tier caps, enterprise pricing model, product-analytics depth, sampling, data retention, raw-data/warehouse access, and platform breadth. Pricing and tier limits are point-in-time (checked Jul 2026) and cite each vendor's public pricing page plus 2026 third-party pricing guides; enterprise figures for GA360 and Amplitude Growth/Enterprise are aggregator estimates, not official, and are labeled as such. Volatile facts are dated; buyers should model their own MTU/event volume and re-verify current terms. Reviewed by the Empire325 Analytics & Data team.
Founder & CEO, Empire325 Marketing
Published April 28, 2026 · Updated July 2026
Last reviewed: July 2026
Which should you choose? A use-case matrix
Match your situation to the recommended pick — genuine buyer guidance, not a feature checklist.
| Your situation | Pick | Why |
|---|---|---|
| Marketing / acquisition / SEO / ad ROI, on a budget | GA4 | Free, with native Google Ads integration for attribution and audience building. |
| Product analytics — retention, funnels, behavioral cohorts, feature adoption for a product-led team | Amplitude | First-class, self-serve behavioral analytics GA4 handles weakly. |
| Both marketing and deep product questions (most SaaS) | Both | GA4 for top-of-funnel and attribution, Amplitude for in-product behavior; feed GA4's free BigQuery export into Amplitude to cut duplicate instrumentation. |
| Enterprise scale needing unsampled data + SLAs | GA360 or Amplitude Growth/Enterprise | GA360 (negotiated) or Amplitude's MTU-based enterprise tier, priced on volume. |
Bottom line: Bottom line: These tools answer different questions with little practical overlap — GA4 owns marketing measurement, Amplitude owns product analytics. Most product-led teams run both, and GA4's free BigQuery export can feed Amplitude to reduce duplicate instrumentation.
Who should choose Google Analytics 4 (GA4)?
Google Analytics 4 (GA4) is the right choice when ga4 for marketing measurement: seo, paid channels, conversion tracking, audience building for google ads. it's free and deeply integrated with google's ad ecosystem.
Google Analytics 4 (GA4) is positioned for: Marketing teams needing channel attribution, acquisition reporting, and SEO measurement at no cost.
Who should choose Amplitude?
Amplitude is the right choice when amplitude for product analytics: feature adoption, user retention, funnel drop-off, cohort segmentation. ga4's product analytics capabilities are materially weaker.
Amplitude is positioned for: Product and growth teams needing retention curves, funnel analysis, and behavioral cohorts.
Not sure which fits your stack?
Empire325 has implemented both for enterprise clients. 15 minutes, no sales pitch.
Empire325's take
Run both. GA4 is non-negotiable for marketing measurement; Amplitude (or Mixpanel) is non-negotiable for product analytics. They answer different questions and do not overlap in practice.
See our performance analytics practice →Frequently Asked Questions
Is GA4 or Amplitude better for product analytics?
Amplitude, clearly. It makes funnels, retention curves, behavioral cohorts, and path analysis first-class and self-serve, so product managers can answer behavioral questions without a data engineer. GA4 was built for marketing and web analytics, so deeper behavioral questions often hit sampling or structural limits and push you into BigQuery and SQL (per 2026 GA4-vs-Amplitude analyses). For marketing measurement, the verdict flips to GA4.
Do I need both GA4 and Amplitude?
Usually yes. They answer different questions with little practical overlap: GA4 handles acquisition, channel attribution, SEO, and Google Ads audiences; Amplitude handles in-product retention, funnels, and feature adoption. Most product-led teams run GA4 for marketing measurement and Amplitude (or Mixpanel) for product analytics. GA4's free BigQuery export can even feed event data into Amplitude, reducing duplicate instrumentation.
How much does Amplitude cost compared to GA4?
Standard GA4 is free; its enterprise tier, Google Analytics 360, is individually quoted with no public price (third-party reporting commonly cites contracts starting around $50k/yr — not official). Amplitude is priced on Monthly Tracked Users: a free Starter tier, a Plus plan publicly listed around $49/mo on annual billing, then custom-quoted Growth/Enterprise plans (third-party aggregators cite roughly $30k–$150k+ ACV). All figures are as of 2026 per each vendor's pricing page and 2026 pricing guides — model your real MTU/event volume before deciding, and re-verify current terms.
Can Amplitude replace Google Analytics for marketing and SEO measurement?
Not really. Amplitude is a product-analytics platform, not an ad-attribution or SEO tool. GA4 is free and natively integrated with Google's ad ecosystem for channel attribution, conversion tracking, and building Google Ads audiences — capabilities Amplitude doesn't replicate. Keep GA4 for marketing measurement and use Amplitude for what happens after the user is inside your product.
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Need help choosing or implementing?
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