PostHog, Inc.

About PostHog, Inc.

Financials

Dated, source-cited figures. Estimates are marked.

Products by PostHog, Inc.

All products by PostHog, Inc. reviewed by our AI panel of experts.

PostHogAI Analytics

Open-source product analytics, session replay, feature flags, and more in one platform

Free8.4/10

How Our Review Panel Scores PostHog, Inc.

Six independent reviewer personalities assessed PostHog, Inc.'s product on their own terms. They landed within 0.2 points of each other, an unusually strong consensus.

Averaged across 1 reviewed product in our catalog. Scores are out of 10.

Competitive Landscape

Who PostHog, Inc. competes with, and how they differ.

Amplitude7.8/10

Amplitude is the enterprise digital-analytics incumbent: closed-source and sold top-down to product and marketing organizations on annual contracts, with deeper governance and marketing-analytics features but none of PostHog's open-source self-hosting or bundled flags, replay and warehouse.

1 product reviewed on TopReviewed

Mixpanel7.7/10

Mixpanel is the closest pure event-analytics rival, with polished funnels and retention reporting on event-based pricing; it stays focused on analytics, whereas PostHog bundles session replay, feature flags, experiments and a data warehouse into one engineer-oriented platform.

1 product reviewed on TopReviewed

Heap7.4/10

Heap pioneered autocapture analytics (now part of Contentsquare) and targets product and marketing teams with retroactive event data; it is closed-source SaaS only, without PostHog's self-host option or developer-tool breadth.

1 product reviewed on TopReviewed

Google Analytics8.0/10

Google Analytics is the free incumbent PostHog explicitly positions against: GA4 is marketing- and traffic-centric with aggregated reporting, while PostHog offers user-level product analytics, replay and experimentation on self-serve, usage-based pricing.

6 products reviewed on TopReviewed

S

Statsig

Statsig, acquired by OpenAI in 2025, targets the same engineer-first buyer from the experimentation side — feature flags and A/B testing with analytics attached — and competes head-on with PostHog's flags and experiments products on usage-based pricing.

Pendo7.9/10

Pendo pairs product analytics with in-app guides and adoption tooling, sold to product-ops and customer-success teams; it competes on the analytics layer but offers no open-source edition, data warehouse or developer-facing feature-flag tooling.

1 product reviewed on TopReviewed

Company Timeline

Key milestones in PostHog, Inc.'s history, with sources.

1. Sep 29, 2025Funding

   Series E — $75M led by Peak XV Partners at a $1.4B valuation

   Peak XV Partners led a $75M Series E at a $1.4B valuation as PostHog announced its "Act 2" expansion beyond analytics into AI-assisted developer tooling.

   posthog.com
2. Jun 9, 2025Funding

   Series D — $70M led by Stripe at a $920M valuation

   Stripe led a $70M primary Series D at a $920M valuation, joined by Y Combinator, GV and Formus Capital; PostHog simultaneously disclosed a previously unannounced small Series C of roughly $10M. Over 176,000 companies had signed up at the time.

   posthog.com
3. February 2025Launch

   PostHog AI and LLM observability launch

   PostHog launched PostHog AI and AI observability in February 2025, extending the platform into tooling for teams building AI products.

   posthog.com
4. October 2024Milestone

   Reaches 100,000 customers

   PostHog passed 100,000 customers in October 2024, and reported reaching cash-flow-positive status by the end of the year.

   posthog.com
5. Jul 10, 2024Launch

   Data warehouse reaches general availability

   PostHog's data warehouse moved from beta to GA, syncing external sources including Stripe, HubSpot, Zendesk, Snowflake, S3 and Google Cloud Storage into the platform on usage-based pricing.

   posthog.com
6. Jun 10, 2021Funding

   Series B — $15M led by Y Combinator Continuity

   Y Combinator's Continuity Fund led a $15M Series B with participation from GV, raised ahead of schedule and bringing total funding past $27M; the PostHog Scale plan launched alongside.

   posthog.com
7. Dec 17, 2020Funding

   Series A — $9M led by GV

   GV (Google Ventures) led PostHog's $9M Series A, announced December 17, 2020, bringing total venture funding to $12.2M less than a year after founding.

   builtinsf.com
8. November 2020Launch

   Expands from analytics into a product platform

   PostHog broadened beyond product analytics in November 2020, adding feature flags and session replay and repositioning as an open-source product platform.

   posthog.com
9. Apr 26, 2020Funding

   Seed — $3.025M

   PostHog closed a $3.025M seed round on April 26, 2020, six weeks after YC demo day; the founders turned down offers that would have taken the round to $5.5M.

   posthog.com
10. Feb 21, 2020Launch

    Launches on Hacker News

    The open-source product analytics MVP launched on Hacker News on February 21, 2020, roughly four weeks after the first line of code was written.

    posthog.com
11. Jan 23, 2020Founded

    PostHog founded in Y Combinator W20

    James Hawkins and Tim Glaser founded PostHog inside Y Combinator's Winter 2020 batch, writing the first line of code on January 23, 2020.

    posthog.com