While stocks last, at our merch store

🎄 'tis the season (for loud, knitted sweaters that give just the right amount of “I work at a startup but also understand winter.”)🎄

You now get a year free of @PostHog ($16,500 value) with your Lenny's Newsletter annual subscription 🙌🙌🙌 This is the first time PostHog has ever offered a deal like this, and you won’t find it anywhere else. This brings the total value of the Product Pass to over $25,000

Protecting the good people of Stripe City from high SaaS prices.

Love ya @posthog Yours is the best use of AI I have seen

Lots of people talk to PostHog AI in their native language. It only said “you’re absolutely right” about 0.1% of the time, which feels like the right level of politeness for a product analyst.

Mid-week: peak PostHog AI usage Weekends: not zero Shareholder value: constant

A beta user hit a 21-day streak with PostHog AI (and it wasn't one of us). Should we send someone to check on them?

PostHog AI hit GA this week. Since we love transparency (and charts), here’s a look into beta usage. - Engineers lead the pack (no surprise there) - Founders and product folks aren’t far behind - Leadership, marketing, data, and sales use it too

On November 24, 2025, we were attacked by a self-replicating worm on npm that injected malicious files into several PostHog JavaScript packages. These files attempted to exfiltrate environment variables from affected development environments. Once we became aware of the issue,

Our post-mortem is now live. What happened, what we fixed, what’s next 👇 https://t.co/JjxVYwjPFH

PostHog AI is HERE! I've got this killer poster to share, but a few nuggets of knowledge too. Over a year, we've turned a hacky demo called "Max AI" into a real product. I've learnt a thing, or two about building genuinely useful AI agents – or EIGHT: 🧵

For more details please follow our status page:

We've unpublished all relevant versions and have published newer versions for all major SDKs. Make sure you're on the latest version of our SDKs.

We’ve identified a number of our library versions published earlier today contain malicious code. We are currently deprecating those versions from our package managers and will republish clean versions of the libraries. The impacted versions we have identified so far are:

Too soon? Regardless, we're now taking pre-orders at /merch

p.s. want a Scaleup pass to the main Slush event? We're giving 1 away. 🎟️ An existing customer will get priority

Sneak peek of components for the hackathon on Thursday

for the last day, we're hosting @SlushHQ's first ever hardware hackathon with our pals at @elevenlabsio. Yes, two software companies doing a hardware hackathon. What could go wrong? Come with laptops charged and ready to make hardware talk! Nov 20, 11-13:00 - Partner Side

how to build a cult is @james405's talk on Day 1 (tomorrow). It's going to be only slightly less unhinged than James' other takes. Details: Builder Stage: Nov 19, 11:56 - 12:23