Amplitude vs PostHog: Which is Better in 2026?
PostHog is an open-source, engineering-first all-in-one platform that bundles product analytics, session replay, feature flags, A/B experiments, error tracking, and LLM observability under one usage-based bill. Amplitude is a mature enterprise digital analytics suite built around behavioral depth: funnel analysis, Pathfinder journey mapping, predictive cohorts, and agentic AI insights launched in early 2026. The core tension is breadth plus developer control (PostHog) versus analytical sophistication plus executive-ready reporting (Amplitude). Read this if you are deciding which platform your product and engineering teams will live in for the next few years.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Amplitude
Understand user behavior with product analytics and experimentation
Best for you if:
- • You need web analytics features specifically
- • Product analytics platform
- • User behavior tracking
PostHog
Open-source product analytics with event tracking, feature flags, and session recording
Best for you if:
- • You need product analytics features specifically
- • All-in-one product OS (analytics, flags, replay)
- • Open source and self-hostable
| At a Glance |  Amplitude |  PostHog |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | Web Analytics | Product Analytics |
Rating | 4.5/5 | 4.5/5 |
Free plan | Yes | Yes |
Choose Amplitude or PostHog?
Choose Amplitude if
Understand user behavior with product analytics and experimentation
- Powerful analytics features
- Good free tier
- Strong cohort analysis
- Your work is web analytics-shaped, not product analytics-shaped
Choose PostHog if
Open-source product analytics with event tracking, feature flags, and session recording
- Open source
- All-in-one
- Self-hostable
- Your work is product analytics-shaped, not web analytics-shaped
| Feature | Amplitude | PostHog |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | ★4.5/5 2,732 reviews | ★4.5/5 1,036 reviews |
| Categories | Web AnalyticsProduct Analytics | Product AnalyticsWeb Analytics |
In-Depth Analysis
Amplitude
Strengths
- +Best-in-class behavioral analytics depth: Pathfinder journey analysis, multi-touch attribution, Compass behavioral benchmarks, and multi-armed bandit experiments are not matched by PostHog
- +Predictive audiences and causal insights on Growth and Enterprise tiers let non-technical PMs answer complex retention questions without writing SQL
- +Agentic AI analytics (launched February 2026): specialized agents continuously surface anomalies, recommend actions, and push insights to tools like Figma, Notion, and GitHub via MCP integration
- +MTU-based pricing is predictable for high-volume, low-event products (e.g., content platforms with millions of passive users)
- +Strong enterprise controls: mutual exclusion groups for A/B tests, advanced permission layers, and a dedicated account manager on Enterprise
Weaknesses
- -Pricing above the free tier requires a sales conversation for Growth and Enterprise; some customers report significant increases at renewal
- -Error tracking, LLM observability, and performance monitoring are absent; teams need separate tools for these, adding cost and context-switching
- -Data warehouse sync can lag 2 or more hours, occasionally exceeding 24 hours, which frustrates data teams expecting near-real-time warehouse exports
- -Charts cap at one year of data per view, requiring workarounds for multi-year trend analysis
Best For
Product and growth teams at mid-market to enterprise companies that have dedicated analysts and need deep behavioral modeling, predictive retention, and boardroom-ready dashboards.
Amplitude is the strongest pure behavioral analytics platform available in 2026, especially after the agentic AI launch. The tradeoff is real: you pay materially more, you still need separate tools for error tracking and developer observability, and warehouse sync reliability has been a recurring complaint. It earns its price for organizations where analytics depth is a competitive advantage, not for startups still figuring out instrumentation.
PostHog
Strengths
- +Genuinely all-in-one: analytics, session replay, feature flags, experiments, error tracking, surveys, and LLM observability are all first-class and included on the free tier, not sold as add-ons
- +Transparent usage-based pricing with published per-unit rates: 1M events, 5K session recordings, and 1M flag requests free every month, with over 90% of companies paying nothing
- +SQL query editor available on the free tier, giving engineers direct access to raw event data without upgrading
- +Open-source MIT codebase with a self-hosted option, so privacy-sensitive teams can keep data on their own infrastructure
- +First-class LLM observability for AI product teams: tracks token usage, latency, costs, and user feedback across AI pipelines, a capability Amplitude does not offer
Weaknesses
- -Behavioral analytics depth is shallower than Amplitude: predictive cohorts, Pathfinder journey analysis, and Compass behavioral benchmarks are not available
- -Collaboration features (shared notebooks, team annotation workflows) are less polished, making it harder to get insights in front of non-technical stakeholders
- -The breadth of the platform creates a steeper learning curve for teams that only need analytics; the UI can feel overwhelming
Best For
Engineering-led startups and mid-stage SaaS teams that want one tool to replace analytics, session replay, feature flags, and experiments without separate vendor contracts or opaque pricing.
PostHog has executed a rare feat: it is genuinely free at meaningful scale and genuinely useful across the full product instrumentation stack. The open-source foundation and self-hosted option make it the default choice for teams with data residency requirements or tight budgets. Where it lags is in the kind of deep behavioral analysis that a dedicated Amplitude analyst can produce.
Head-to-Head Comparison
Pricing
PostHog winsPostHog publishes every per-unit rate publicly and gives 1M analytics events, 5K session recordings, and 1M feature flag requests free every month with no credit card required. Amplitude's free tier is capped at 10K monthly tracked users and 1K session recordings. Above the Starter tier, Amplitude's Growth and Enterprise plans require contacting sales, making cost comparisons difficult upfront.
Behavioral Analytics Depth
Amplitude winsAmplitude's Pathfinder, Compass benchmarks, predictive cohorts, and causal insights have no direct equivalent in PostHog. PostHog covers funnels, retention, and trends well, but Amplitude analysts can answer harder questions (why did retention drop in this segment three steps into onboarding?) faster and without SQL. For teams with a dedicated analyst, this gap is the deciding factor.
Platform Breadth
PostHog winsPostHog includes error tracking, LLM observability, surveys, data pipelines, and a data warehouse connector as built-in products on the same bill. Amplitude focuses on analytics, experimentation, and session replay. Teams using PostHog can eliminate separate contracts for tools like Sentry or LaunchDarkly; Amplitude users cannot.
Developer Experience
PostHog winsPostHog ships an open-source codebase, a self-hosted option, SQL access on the free tier, and a DOM explorer for debugging. Its SDKs are actively maintained across web, iOS, Android, and server-side frameworks. Amplitude's developer experience is solid but the platform is designed around the business user persona, not the engineer instrumenting the product.
AI and Agentic Features
TieAmplitude's February 2026 agentic AI launch is impressive: a Global Agent plus four specialized agents push behavioral insights to Figma, Notion, GitHub, and Claude via MCP. PostHog counters with first-class LLM observability (token costs, latency, model performance) that Amplitude lacks entirely. The winner depends on your use case: product insight synthesis (Amplitude) versus AI product monitoring (PostHog).
Enterprise Readiness
Amplitude winsAmplitude offers mutual exclusion groups, multi-armed bandit experiments, advanced permission controls, SSO enforcement, and an assigned account manager on Enterprise. PostHog has HIPAA and SOC 2 Type II compliance plus Google/GitHub SSO, but its permission model and enterprise support tier are lighter. Large organizations with complex governance requirements will find Amplitude more mature.
Migration Considerations
Migrating from Amplitude to PostHog requires re-implementing event instrumentation via PostHog's SDK since the event schemas and property naming conventions differ. Historical data can be exported from Amplitude and imported into PostHog's data warehouse product, but cohort definitions and saved charts do not transfer and must be rebuilt.
Pricing: Amplitude vs PostHog
| Plan | Amplitude | PostHog |
|---|---|---|
| Tier 1 | $0 Starter | Free Free |
| Tier 2 | $49 Plus | Custom Usage-Based |
| Tier 3 | Custom Growth | $750 Scale |
| Tier 4 | Custom Enterprise | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on Amplitude pricing and PostHog pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: Amplitude
Want the highest-rated option?
Amplitude: 4.5/5 (2,732 reviews). PostHog: 4.5/5 (1,036 reviews).
Go with: Amplitude
Value user reviews?
Amplitude: 2,732 reviews (4.5/5). PostHog: 1,036 reviews (4.5/5).
Go with: Amplitude
3 Questions to Help You Decide
What's your budget?
Both are freemium. Pricing won't help you decide here.
What's your use case?
Amplitude is a web analytics tool. PostHog is in product analytics. Pick the category that matches your needs.
How important are ratings?
Both are rated 4.5/5.
Key Takeaways
PostHog
- Free tier available
- Our pick for this comparison
Amplitude
- Larger review base (2,732 reviews)
- Better fit for web analytics
The Bottom Line
For most product teams in 2026, PostHog is the pragmatic default: it is free at real scale, covers the full developer toolchain in one product, and its pricing is legible before you talk to anyone. Choose Amplitude when your organization has dedicated product analysts who will exploit behavioral depth features like Pathfinder and predictive cohorts, and when the analytics output needs to flow to executives and stakeholders who are not comfortable with SQL. PostHog wins on value, breadth, and developer control. Amplitude wins on analytical sophistication, agentic AI workflows, and enterprise governance. If you are an early-stage startup or an engineering-led team, PostHog. If you are a mid-market or enterprise company with a growth or data team that lives in analytics, Amplitude.
Frequently Asked Questions
Is PostHog actually free for small teams?
Yes. PostHog's free tier includes 1M analytics events, 5K session recordings, 1M feature flag requests, and 1.5K survey responses every month with no credit card required. The company states over 90% of companies use PostHog for free. Paid usage-based billing only activates when you exceed those thresholds.
How does Amplitude's MTU pricing compare to PostHog's event-based pricing?
Amplitude's free Starter plan covers 10K monthly tracked users (MTUs) and up to 2M events. The Plus plan starts at $49 per month for up to 300K MTUs. PostHog charges per event regardless of how many users generated them, which is cheaper for high-event-per-user products and more expensive for very high-user, low-event products like content platforms.
Does PostHog replace Amplitude for A/B testing?
For most teams, yes. PostHog includes a built-in experiments product that integrates directly with its feature flags, supports statistical significance calculations, and is included in the free tier. Amplitude Experiment is available on Growth and Enterprise plans and adds multi-armed bandit tests and mutual exclusion groups, which PostHog does not offer.
Can you self-host PostHog to keep data on your own infrastructure?
Yes. PostHog is open source under the MIT license and supports self-hosted deployment. This is a key reason privacy-sensitive companies and those with data residency requirements (healthcare, fintech, EU-regulated businesses) choose PostHog over Amplitude, which is cloud-only.
What did Amplitude launch in 2026 to differentiate itself?
Amplitude launched agentic AI analytics in February 2026, including a Global Agent and four specialized agents that continuously analyze product usage and push prioritized recommendations into tools like Figma, Notion, Cursor, GitHub, and Claude via MCP integrations. This makes Amplitude-generated insights available inside the tools where product and engineering teams already work.
Which tool is better for tracking AI product performance?
PostHog is better for AI product teams. It has a dedicated LLM observability product that tracks token usage, model latency, cost per request, and user feedback across AI pipelines out of the box. Amplitude does not have an equivalent feature and would require a separate observability tool for teams building LLM-powered products.