# PostHog

PostHog is an open-source product analytics and feature flagging platform rated 4.4/5 on G2 from 400+ reviews. Profile: pricing, features, and how it compares to Mixpanel.

**Category:** Open-source product analytics and experimentation platform  
**Vendor:** PostHog, Inc.  
**Founded:** 2020  
**HQ:** San Francisco, California, US  
**Website:** https://posthog.com  


## About

PostHog is a San Francisco-based open-source product analytics platform founded in 2020 by James Hawkins and Tim Glaser via Y Combinator. The platform combines product analytics (funnels, cohorts, retention), session replay, feature flags, A/B testing, and error monitoring into a single self-hostable stack. PostHog is engineering-led and explicitly designed for product engineers who want to understand user behavior without sending data to a third-party SaaS. The self-hosted version can be deployed on AWS, GCP, or Kubernetes for free. PostHog raised $27M in Series B funding from Y Combinator and Andreessen Horowitz and has become one of the fastest-growing open-source SaaS companies, with 50,000+ companies using the platform.

## Ratings

| Source | Score | Reviews |
|---|---|---|
| G2 | 4.4/5 | ~400 |

## Funding

$27M+

| Round | Amount | Date | Lead |
|---|---|---|---|
| Seed | $3M | 2020 | Y Combinator |
| Series A | $9M | 2020 | GV (Google Ventures) |
| Series B | $15M | 2021 | Andreessen Horowitz |

## Viability

Strong for early-stage and mid-market companies. Open-source moat is significant. Engineering-led culture means product quality is high. Financial stability is solid for a Series B company.

## Pricing

PostHog Cloud is free up to 1M events/month. Beyond that, pricing scales by product: analytics events at $0.000045/event, session replays at $0.004/recording. A team using 10M events/month pays roughly $400/month. Self-hosted is always free regardless of volume.

| Plan | Price | Best for |
|---|---|---|
| Free (Cloud) | $0/mo | Up to 1M events/month |
| Paid (Cloud) | Pay-as-you-go | Growing teams, per-product pricing |
| Self-hosted | Free | Teams prioritizing data control and cost |
| Enterprise | Custom | SLAs, SSO, HIPAA, dedicated support |

## What reviewers say

_~400 G2 reviews and strong engineering community discussion, 2025-2026_

**Praised:**
- All-in-one stack (analytics + session replay + feature flags + A/B) in one tool eliminates tool sprawl
- Self-hosted option gives full data control with no per-event costs
- Engineering team ships features aggressively; product improves fast
- Data warehouse native queries let you combine product data with Stripe, Salesforce, etc.

**Complaints:**
- Self-hosted version requires DevOps competence to maintain at scale
- UI and UX less polished than Mixpanel or Amplitude
- Some advanced analytics features still in beta or catching up to dedicated tools

## Compliance

- **SOC 2:** Yes (Type II)
- **GDPR:** Yes
- **HIPAA:** Yes (Enterprise)
- **SSO:** Yes (Enterprise)

## Integrations

- Segment
- Rudderstack
- Stripe
- Salesforce
- GitHub
- Slack
- Zapier
- Sentry
- BigQuery
- Snowflake
- Redshift
- dbt

## FAQs

### How does PostHog compare to Mixpanel?

PostHog has a free self-hosted option and all-in-one features (analytics + session replay + flags). Mixpanel has a better UX and more mature analytics features. PostHog is the right choice for engineering-led teams; Mixpanel suits product and data analyst-led organizations.

### Is PostHog GDPR compliant?

Yes. PostHog's self-hosted option stores all data in your own infrastructure, which gives maximum GDPR control. The cloud version stores data in the EU on EU deployments.


## Sources

- [PostHog website](https://posthog.com): Product and pricing
- [G2 PostHog reviews](https://www.g2.com/products/posthog/reviews): User reviews