Statsig vs PostHog
Feature management + experimentation + analytics — ex-Facebook team
vs. Open source product analytics — all-in-one dev tool
Pricing tiers
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
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
Free-tier quotas head-to-head
Comparing developer on Statsig vs free on PostHog.
| Metric | Statsig | PostHog |
|---|---|---|
| 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
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.
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.
Developer interfaces
| Kind | Statsig | PostHog |
|---|---|---|
| SDK | go-sdk, statsig-android, statsig-erlang, statsig-ios-client-sdk, statsig-java-server-sdk, statsig-js (browser), statsig-node-server-sdk, statsig-python-core | posthog-android, posthog-flutter, posthog-go, posthog-ios (Swift), posthog-js, posthog-node, posthog-php, posthog-python, posthog-react-native, posthog-ruby |
| REST | Events Ingest API, Statsig Console API | PostHog REST API |
| MCP | — | PostHog MCP |
| OTHER | Webhooks | Webhooks + Actions |
Staxly is an independent catalog of developer platforms. Some links to Statsig and PostHog may be affiliate links — Staxly may earn a commission if you sign up through them, at no extra cost to you. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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