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Amplitude vs PostHog for Agencies (2026): Which Is Better?
By Red Kite Search Agency Created Updated 7 min read
Summary
Choose PostHog for open source, transparent usage pricing, and stated security evidence. Choose Amplitude for unlimited seats and a polished, experiment-ready platform. Prices and ratings were checked in October 2026.
Amplitude vs PostHog: which is better for agencies in 2026?
Amplitude and PostHog are the two product analytics platforms agencies compare most. Both have free tiers and session replay. Amplitude is a closed platform with unlimited seats. PostHog is open source with usage-based billing.
We compared price, features, and security.
| Tool | Editorial score | Review-site ratings | Pricing | Best for |
|---|---|---|---|---|
| Amplitude | 4.2 / 5 | G2 4.5 | Free plan with 2M events a month forever. Plus starts at $0 with the first 2M events free; Growth and Enterprise are custom. | Startups to enterprises |
| PostHog | 4.2 / 5 | G2 4.5 | Free tier on every product and a $0 platform fee on pay-as-you-go; you pay only for usage above the free allowances. | Startups to enterprises |
How do Amplitude and PostHog compare on price?
Amplitude has a free plan at $0 for 2M events a month, Plus starting at $0 with the first 2M events free, and custom Growth and Enterprise. PostHog has a free tier and a pay-as-you-go plan with a $0 platform fee.
| Tool | Plan | Price | What stands out |
|---|---|---|---|
| Amplitude | Free | $0 per month (monthly billing) | 2M events a month forever; no credit card; 10K monthly session replays |
| Amplitude | Plus | $0 per month (monthly billing) | Starts at $0 with the first 2M events a month free; up to 70M events; 20 behavioral cohorts, alerts, heatmaps, 2-year retention |
| Amplitude | Growth | Custom | Event-based pricing; SSO and project permissions; 20K monthly session replays |
| Amplitude | Enterprise | Custom | Event-based pricing; data access controls; 50K monthly session replays; RBAC |
| PostHog | Free | $0 per month (monthly billing) | Free allowances on every product; community support |
| PostHog | Pay-as-you-go | $0 per month (monthly billing) | No platform fee; usage-based pricing above the free allowances; email support |
Which is easier to price?
PostHog publishes per-unit rates and a zero platform fee, so you can model the bill. Amplitude publishes a free plan and a starting price for Plus but quotes Growth and Enterprise.
Both depend on event volume, so estimate your events before you compare.
Amplitude includes unlimited seats on every plan, which matters for agencies with many collaborators, while PostHog bills on usage rather than seats.
Which has more features included?
Both include analytics, session replay, experiments, and surveys. Amplitude lists guides, AI agents, and MCP on every plan. PostHog adds feature flags and web analytics and is open source with a self-hosted option.
Replay allowances differ: Amplitude lists 10,000 a month on Free, and PostHog lists 5,000 recordings on its free tier.
If replay is central to your work, check how each tool counts a recording and what happens when you pass the allowance, since overage rules change the bill faster than the headline price does.
Which has stronger security evidence?
PostHog states SOC 2 Type 2, GDPR compliance, a HIPAA BAA on request, and EU hosting. Amplitude lists SSO and project permissions on Growth and data access controls on Enterprise, but certifications were not stated on its pricing page.
Ask Amplitude for its security documents before recommending it to a regulated client.
Hosting and data control also differ. PostHog lets you choose US or EU cloud and offers self-hosting, which can settle a data-residency question, so confirm where Amplitude stores data for any client with regional requirements.
Finally, migrating later is work in either direction because event names and saved charts do not transfer, so pick the tool you can live with for a year.
How do Amplitude and PostHog compare on integrations, security, and support?
Beyond price, agencies ask about connections to their other tools, what to tell clients about security, and how quickly they can get help. This is what each vendor states publicly, as checked in October 2026.
| Area | Amplitude | PostHog |
|---|---|---|
| Integrations | Collaboration and integrations are included on every plan; a connector count was not stated | An integration count was not stated; data warehouse sources include 1M rows a month free |
| Security | SSO and project permissions on Growth; data access controls and advanced user management on Enterprise; Certifications were not stated on the pricing page | SOC 2 Type 2 and GDPR compliant; a BAA can be provided for HIPAA; US or EU (Frankfurt) cloud hosting; SSO, audit logs and custom roles in paid platform packages |
| Support | Support options were not stated on the pricing page | Free: community support; pay-as-you-go: email support, Slack above $2,000 a month |
| Apps | No mobile app stated | No mobile app stated |
What are the pros and cons of Amplitude and PostHog?
Here is where each tool helps agencies and where it can get in the way, based on plan details and public feedback.
Amplitude pros
- Free plan includes 2M events a month with unlimited seats.
- Every plan includes analytics, session replay, experimentation, guides and surveys.
- AI agents and MCP are included on all plans.
- Startups with under $10M in funding and fewer than 20 employees can receive a free year of the Growth plan.
Amplitude cons
- Growth and Enterprise pricing is custom and event-based.
- Plus requires a credit card and its bill depends on event volume.
- Free has limited experiments and guides and surveys.
- It is aimed at product teams, not marketing reports.
PostHog pros
- A free tier covers 1M events, 5K session recordings, 1M feature flag requests and 1,500 survey responses a month.
- No monthly platform fee on the pay-as-you-go plan.
- SOC 2 Type 2, GDPR compliance, a BAA for HIPAA and EU hosting in Frankfurt.
- Open source under the MIT license with a self-hosted option.
PostHog cons
- Usage-based pricing is harder to forecast than a flat fee.
- It is built for product teams, not marketing-client reporting.
- SSO and custom roles sit in paid platform packages.
- Slack support starts above $2,000 a month; lower plans get community or email support.
What do reviewers say about Amplitude and PostHog?
G2 shows Amplitude at 4.5 from 3,006 reviews and PostHog at 4.5 from 1,053 reviews. Both score the same, and Amplitude has the larger base.
| Tool | Source | Rating | Number of reviews |
|---|---|---|---|
| Amplitude | G2 | 4.5 / 5 | 3,006 |
| PostHog | G2 | 4.5 / 5 | 1,053 |
Reviewer themes for Amplitude
- G2 shows Amplitude at 4.5 from 3,006 reviews.
- Reviewers value real-time insights and time-saving dashboards.
- Some reviewers say the number of events can be hard to navigate.
Reviewer themes for PostHog
- G2 shows PostHog at 4.5 from 1,053 reviews.
- G2 reviewers praise ease of use and the breadth of features for product analytics and user insights.
- Reviewers like connecting experiments, sessions and feature releases in one platform.
How does setup differ between Amplitude and PostHog?
Getting value from either tool depends on how you set it up, and the first steps differ. Here is the practical starting point for each.
Amplitude: Start on the free plan with one product and instrument a handful of core events.
PostHog: Add PostHog to one client product on the free tier and track a few core events.
What should agencies check before choosing between Amplitude and PostHog?
Small details in plans and limits decide whether a tool works in practice. Check these points for each tool during a trial on a real client account.
Before you buy Amplitude
- Estimate monthly events with the bill estimator.
- Check whether a client qualifies for the startup offer.
- Ask for certifications.
- Start on the free plan.
Before you buy PostHog
- Estimate monthly events and replays.
- Decide on US or EU hosting.
- Check which roles and SSO you need.
- Start on the free tier with one product.
How should you test Amplitude and PostHog before deciding?
The fairest test is to run both tools on the same real client account for two weeks, with the same people, and compare the results rather than first impressions.
What to measure
- How long it takes a new team member to be productive in Amplitude versus PostHog.
- How often people open each tool without being reminded.
- Whether the plan you need includes the features you tested, not just the entry price.
- How a client reacts if you invite them to either tool.
- How much time the team spends on notifications, setup, and cleanup each week.
Which should you choose: Amplitude or PostHog?
Choose PostHog for open source, transparent usage pricing, and stated security evidence. Choose Amplitude for unlimited seats and a polished, experiment-ready platform.
Technical agencies often prefer PostHog.
Choose Amplitude if
- You run product analytics for software clients.
- You want unlimited seats and a free plan.
- You want experiments and replays in one platform.
Skip Amplitude if
- You mostly report on ads and SEO.
- You need a fixed price.
- You need security detail stated up front.
Choose PostHog if
- You build or run client web products.
- You want analytics, replay, and flags in one tool.
- You want a generous free tier and an EU cloud.
Skip PostHog if
- You mostly report on ads and SEO.
- You need a fixed monthly price.
- You need SSO without a paid package.
Frequently asked questions
- Is Amplitude or PostHog better?
- PostHog for open source and transparent pricing, Amplitude for unlimited seats and polish.
- Which is open source?
- PostHog.
- Which has a free plan?
- Both.
- Which states SOC 2?
- PostHog states SOC 2 Type 2.
- Which has unlimited seats?
- Amplitude on every plan.
Sources
Prices, plan limits, and ratings were gathered in October 2026 from:
- Amplitude pricing page
- PostHog pricing page
- G2