PostHog Statistics 2026: Funding, Revenue, Customers, Pricing and Open-Source Data

PostHog is an open-source product analytics platform that bundles event analytics, session replay, feature flags, experiments, surveys and a data warehouse in one product.

Founders James Hawkins and Tim Glaser started it in Y Combinator’s W20 batch, and it competes with Mixpanel, Amplitude, Heap and Google Analytics. Teams can use it as a hosted service or run it themselves.

PostHog is private and shares more than most companies do, but not everything. It has published its funding rounds and pricing allowances, while its revenue and customer numbers come from a research firm’s estimates and from marketing claims that disagree with each other.

PostHog Statistics

PostHog Funding and valuation

PostHog’s handbook lists these rounds. It and the company’s press kit disagree on several dates, and the handbook page does not say which is right.

• Series E: PostHog’s own blog post is dated September 29, 2025. It states $75 million, a $1.4 billion valuation and Peak XV Partners as the lead, with “significant participation from existing investors.” Co-founder James Hawkins wrote, “We can now proudly upgrade our status from unicorn adjacent to unicorn.” I used the blog’s date, since the handbook and press kit disagree.
• Total raised: The handbook puts it at about $194 million as of October 2025, at a valuation of about $1.4 billion. The six rounds in the table add up to about $182 million, so the handbook total likely includes other money. I did not reconcile the gap.
• Series D valuation: Sacra says the Series D valued PostHog at $920 million, about three months before the Series E. That figure is Sacra’s, and I did not find it in PostHog’s own pages.
• Profitability: PostHog’s handbook says it ended December 2024 cash-flow positive, “mostly unplanned.” Its about page says it runs “default alive” with “razor thin margins.” Both are company statements, with no figures.
• Later rounds: I found none after the Series E.

PostHog Revenue

PostHog does not publish revenue or ARR in the pages I read.

• Sacra estimate: About $58 million ARR as of February 2026, up about 112% year over year, and roughly 6x the $9.5 million Sacra cited for March 2024 (Sacra, published April 6, 2026). Sacra describes these as its own estimates, and I could not tell how it derived them.
• Valuation multiple: Sacra says the $1.4 billion valuation was about 25 times revenue. That is Sacra’s calculation, based on its own estimate.

Treat the $58 million figure as an outside estimate. I found nothing from PostHog to confirm or contradict it.

PostHog Customers and users

These do not agree. “Companies” and “teams” may be counted differently, and the about page gives no method or date. I would quote none of them as a customer count without that context. I also found no named enterprise customer list I could verify.

GitHub and open source

• Stars and forks: About 37.5k stars and 3.2k forks on October 21, 2026.
• License: MIT, except for the ee directory, which has a separate license (README, via GitHub). PostHog is therefore open core, not fully open source.
• Early traction: PostHog’s history page says the repository passed 1,500 stars within two weeks of its Hacker News launch in early 2020, and that there were more than 300 self-hosted deployments within a couple of days. Both are company statements about 2020.
• Contributors and releases: GitHub’s page showed neither when I loaded it.

npm downloads, checked against React

I pulled all counts from npm’s public downloads API on October 21, 2026 and calculated the changes.

• How to read this: React’s own count rose about 4x in the same window, which developer growth alone does not explain. Automated installs, CI and AI coding tools are possibilities, but I found no source that identifies the cause. Against that baseline, posthog-js grew only slightly faster than React, and posthog-node grew about twice as fast.
• Do not turn SDK downloads into customers. One company can install an SDK in many projects and builds, and the counts include automated installs and bots.

PostHog Pricing

PostHog’s pricing page (read October 21, 2026, undated) shows a monthly free tier on every plan:

• Free vs Pay-as-you-go: Free allows 1 project and 1 year of data retention. Pay-as-you-go allows 6 projects and 7-year retention, with the same free allowance each month and usage-based pricing above it.
• Per-unit rates: The page linked to them but did not list them, so I have no per-event price. The only rate I could read was $0.05 per GB per month for log retention beyond the default.
• Billing controls: You can set a limit per product, and PostHog says it will not charge above it (usage past the limit is dropped). Card billing runs through Stripe, and invoicing needs an upfront credit purchase.
• Support: Email support, or Slack support above $2,000 a month in spend.

Confirm per-event rates on PostHog’s pricing page before you quote a cost.

PostHog Ratings

• G2: 4.5 out of 5 from 1,055 reviews (page modified October 19, 2026). That is a large sample for an analytics tool. I could not see individual review dates.

Product milestones

• 2020: First release on Hacker News about four weeks after the first line of code.
• December 2024: Cash-flow positive, per PostHog’s handbook.
• February 2025: An AI observability tool built to track PostHog AI’s own costs shipped as a product (handbook).
• Early 2026: PostHog Desktop launched, which the handbook calls its biggest launch so far.

These milestones come from PostHog’s own account, and some rest on a single handbook page.

PostHog Comparisons with other analytics tools

I did not collect matching data for Mixpanel, Amplitude or Heap, so I make no numeric comparison here. Their revenue, pricing and ratings would need the same source-and-date checks before any side-by-side table is fair.

If you are planning to embed product analytics in a custom build, our custom web application development service covers that kind of project.

What the PostHog numbers suggest?

• PostHog is well funded. About $194 million raised and a $1.4 billion valuation, set in September 2025.
• Revenue growth looks fast, but the number is an estimate. Sacra’s roughly $58 million ARR and 112% growth have not been confirmed by PostHog.
• Customer counts do not agree. 176,000 companies, 500,000 teams and 250,000 engineers describe different things.
• The free tier is generous. One million events and 5,000 recordings a month on every plan.
• Download growth is partly an ecosystem effect. React’s count rose about 4x, and PostHog’s SDKs rose about 4.4x and 9.2x.

FAQ

Sources

• PostHog blog: Series E (Sep 29, 2025; company source)
• PostHog: History of PostHog (handbook and press kit funding table; company source) and About PostHog (read Oct 21, 2026)
• Sacra: PostHog research (Apr 6, 2026; third-party estimates)
• PostHog pricing (read Oct 21, 2026; undated)
• GitHub: PostHog/posthog (Oct 21, 2026)
• G2: PostHog reviews (page modified Oct 19, 2026)
• npm downloads API, queried Oct 21, 2026: posthog-js, posthog-node and react; prior-year counts use the same URL pattern with 2025-09-19:2025-10-18