PostHog vs Statsig
Open source product analytics — all-in-one dev tool
vs. Feature management + experimentation + analytics — ex-Facebook team
Pricing tiers
PostHog
Free (generous)
No credit card. Each product has its own free monthly quota. Great for startups + OSS.
Free
Paid (usage-based)
Pay only what you use, after free quotas. Volume discounts at higher tiers. 6 projects, 7-year retention.
$0 base (usage-based)
Self-Hosted (OSS)
MIT-licensed. Run on your own infra via Docker/k8s. Zero vendor lock-in.
$0 base (usage-based)
Enterprise
Custom. SAML SSO, dedicated CSM, custom SLA.
Custom
Statsig
Developer (Free)
2M events/mo. Unlimited flag checks + configs. 50K session replays. 1-year retention. Unlimited seats.
Free
Pro
$150/month. 5M events included ($0.05 per 1K additional). Advanced experimentation + analytics. Unlimited retention.
$150/mo
Enterprise
Custom. Warehouse Native deploy. Outgoing data integrations. SSO, RBAC, HIPAA. Priority support.
Custom
Free-tier quotas head-to-head
Comparing free on PostHog vs developer on Statsig.
| Metric | PostHog | Statsig |
|---|---|---|
| data warehouse rows | 1000000 rows/month | — |
| error tracking exceptions | 100000 exceptions/month | — |
| feature flags requests | 1000000 requests/month | — |
| llm analytics events | 100000 events/month | — |
| logs gb | 50 GB/month | — |
| product analytics events | 1000000 events/month | — |
| projects | 1 projects | — |
| retention years | 1 year | — |
| session replay recordings | 5000 recordings/month | — |
| surveys responses | 1500 responses/month | — |
| team members | unlimited members | — |
Features
PostHog · 14 features
- A/B Testing — Experiments with significance analysis.
- Data Pipelines — Export events to BigQuery, Snowflake, S3.
- Data Warehouse — Query external sources (Stripe, Hubspot, S3) alongside events with SQL.
- Error Tracking — Sentry-style error tracking in same platform.
- Feature Flags — Rollout flags with targeting, A/B testing, JSON payloads.
- LLM Analytics — Tracing + cost tracking for OpenAI, Anthropic, Gemini, etc.
- Logs — Centralized log ingest with free 50 GB/month.
- Product Analytics — Events, funnels, trends, retention, paths. SQL insights available.
- Revenue Tracking — Integration with Stripe for revenue + churn metrics.
- Self-Hosting — Docker/Helm. Full feature parity with cloud.
- Session Replay — Watch user sessions. Privacy controls, masked inputs, JS errors.
- SQL Query API — Run ClickHouse SQL over your events via API.
- Surveys — In-app surveys + feedback widgets.
- Workflows — Trigger emails/webhooks on events.
Statsig · 14 features
- Alerts — Metric threshold + anomaly alerts to Slack/PagerDuty.
- Autocapture — Zero-config click + pageview tracking.
- Dynamic Configs — JSON config with targeting — remote config.
- Experiments (A/B/n) — Full-factorial + sequential + holdouts. Bayesian + frequentist stats.
- Feature Gates — Boolean flags with targeting rules, gradual rollout, custom attributes.
- Layers — Mutually-exclusive experiment containers for traffic budget management.
- Metrics Catalog — Define reusable metrics with guardrails.
- Outgoing Data Sync — Sync events to warehouses. Enterprise.
- Product Analytics — Funnels, retention, segments, dashboards — integrated with flags.
- RBAC + SSO — Role-based access, SAML SSO. Enterprise.
- Segments / Audiences — Reusable targeting groups.
- Session Replay — DOM + network replays, 50K/mo free.
- Warehouse Native — Enterprise: run Statsig in your data warehouse (Snowflake/BQ/Databricks/Redshift…
- Web Analytics — Pageviews, sources, devices, Core Web Vitals.
Developer interfaces
| Kind | PostHog | Statsig |
|---|---|---|
| SDK | posthog-android, posthog-flutter, posthog-go, posthog-ios (Swift), posthog-js, posthog-node, posthog-php, posthog-python, posthog-react-native, posthog-ruby | go-sdk, statsig-android, statsig-erlang, statsig-ios-client-sdk, statsig-java-server-sdk, statsig-js (browser), statsig-node-server-sdk, statsig-python-core |
| REST | PostHog REST API | Events Ingest API, Statsig Console API |
| MCP | PostHog MCP | — |
| OTHER | Webhooks + Actions | Webhooks |
Staxly is an independent catalog of developer platforms. Outbound links to PostHog and Statsig are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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