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GrowthBook @growthbook.io · 17/09/2025

Yesterday's comic was, of course, in reference to Twyman's Law. Applicable not only to experiment analysis, but also life. If it looks too good to be true, then it probably is 😅

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GrowthBook @growthbook.io · 16/09/2025

This fantastic comic (xkcd 2899) is about which law?

A black-and-white comic strip with two stick figures. The first figure says, "When a metric becomes a target, it ceases to be a good metric." The second figure, wearing a hat, responds, "Sounds bad. Let's offer a bonus to anyone who identifies a metric that has become a target." The comic illustrates Goodhart's Law, which states that when a measure is used as a goal, it will no longer serve as a good measure.

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GrowthBook @growthbook.io · 09/09/2025

Your PM: "What happened with that experiment?" You: Opens 17 tabs, 3 spreadsheets, and a Slack thread Sound familiar? We fixed that. Introducing Experiment Dashboards in GrowthBook 4.1: ✅ Create custom views ✅ Highlight metrics ✅ Add context ✅ Share a single link instead of a dissertation

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GrowthBook @growthbook.io · 22/08/2025

It's a hard truth—but we're not all SQL geniuses. Get a little (or lot of help) with your next query by using our new natural language to SQL generation feature. Ask, for example, to list the top 10 pages by view count in the past 3 months and get back a crisp SELECT statement. See Graham's demo

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GrowthBook @growthbook.io · 21/08/2025

Teams often struggle with an ever-growing list of metrics, ballooning from 20 to 200. Finding a specific metric during a new experiment can be tough, leading to even more creation ☠️. AI can automatically summarize metrics, making them easier to find and preventing duplicates. Watch Graham's demo 👇

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GrowthBook @growthbook.io · 19/08/2025

Hypothesis enforcement just dropped ✨ No, you won't get a ticket for sloppy hypotheses—but this AI-powered feature ensures your team writes them right. YOU set the quality bar. Academic rigor or lighter touch, your choice. Don't just run experiments, run them right.

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GrowthBook @growthbook.io · 19/08/2025

Automatic experiment result summary generation is here 🪄 Get a summary of your experiment results instantly, including key findings based on your metrics and variants, that's totally customizable to your organization's style and requirements.

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GrowthBook @growthbook.io · 12/08/2025

New tutorial: Run A/B tests without deploying code 🚀 Connect @sanity_io + GrowthBook + Next.js so content editors can test directly from Sanity Studio. No more eng bottlenecks for headline tests. Guide → docs.growthbook.io/guide/sanity What integration should we build next?

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GrowthBook @growthbook.io · 06/08/2025

The velocity of change is changing. 🚗 Ford Model T → 1 million sold: 13 years 🔎 Google → 1 million searches/day: 1 year 📱 iPhone → 1 million units: 74 days 💬 ChatGPT → 1 billion searches/day: <1 year This isn't just acceleration—it's a fundamental shift in how quickly markets transform.

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GrowthBook @growthbook.io · 31/07/2025

Cut feature flag latency to practically zero when you integrate GrowthBook with @Vercel Edge Config. Here's why it's a game changer for technical teams:

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GrowthBook @growthbook.io · 22/07/2025

Like an erstwhile PSA: "Do you know where your feature flags are?" As part of our 4.0 launch, we shipped feature flag usage analytics, which means that for every feature flag, you now know: 🛎️ How often it's been evaluated 💁 Which values are being served 📏 Which rules are being hit 🌈 And more

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GrowthBook @growthbook.io · 10/07/2025

GrowthBook + #MCP gets your A/B test into production in ~60 seconds, all with fewer characters than in this post. See the proof yourself in the video.

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GrowthBook @growthbook.io · 09/07/2025

After months of engineering work, GrowthBook 4.0 is here with 14+ major features that push the boundaries of what's possible in experimentation platforms.

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GrowthBook @growthbook.io · 07/07/2025

me: "let me just check one quick thing in our data" also me: opens BI tool, waits for it to load, gets distracted, ends up reading AITAH posts We built SQL Explorer in GrowthBook so you can scratch that data itch without the context-switching rabbit hole 🐰

SQL query editor alongside a colorful stacked bar chart showing monthly sales data by region.

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GrowthBook @growthbook.io · 25/06/2025

🚀 Launch Month Week 4 drops! New Managed Warehouse = goodbye to 40+ step data setups, hello to one-click deployment and real-time insights ⚡ Plus Feature Usage Analytics to track your flags in real-time and catch tech debt before it catches you 📊 First 2M events free for Pro users! #FeatureFlags

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GrowthBook @growthbook.io · 18/06/2025

How many do you believe in?

Purple cover slide with white text reading '5 Myths About Feature Flags That Are Costing You Money' with swipe gesture icon

Myth vs Reality slide: 'Feature flags are just for big tech companies' vs 'The smaller your team, the MORE you need them. You can't afford the downtime.' Includes vintage hand and pocket watch illustrations

Myth vs Reality slide: 'They add complexity to your codebase' vs 'Technical debt from flags < Technical debt from broken releases.' Features explosion/computer crash illustration

Myth vs Reality slide: 'Feature flags are only for preventing disasters' vs 'They're your fastest path to product-market fit through rapid experimentation.' Shows vintage space/rocket illustration

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GrowthBook @growthbook.io · 18/06/2025

Have you run into this annoyance? You're in your experimentation tool but you have to jump into Looker or Mode just to write some quick SQL to answer a simple data question. All of that context switching adds up, which is why we built SQL Explorer right into GrowthBook #abtesting #datascience

SQL Explorer, showing data visualization and sql queries

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GrowthBook @growthbook.io · 17/06/2025

Hot take: The most underrated developer skill in 2025 isn't AI prompting or the latest framework. It's the ability to ship code you're not 100% confident in. Feature flags teach you to embrace uncertainty and let data decide. This mindset shift is worth more than any bootcamp.

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GrowthBook @growthbook.io · 13/06/2025

Check on your experiments from anywhere with our MCP server. Perfect for those moments when you're having a sandwich but also really want to know how cart-upsell-03 is doing 🥪 🛒

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GrowthBook @growthbook.io · 11/06/2025

Your experiment data has been trying to tell you something 📢 Which metrics move easily? Which require heavy lifting? How do your key metrics correlate? New Insights section surfaces all these patterns automatically. docs.growthbook.io/insights

Scaled impact representation, showing revenue gained and loss avoided.

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GrowthBook @growthbook.io · 11/06/2025

PSA: Your experiment history is probably your most underutilized asset 💎 But only if you can surface those learnings systematically. #experimentation #datascience

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GrowthBook @growthbook.io · 10/06/2025

You're running dozens, hundreds, thousands!!! of experiments. But are you learning from all of them? Our new Insights section solves this with 5 purpose-built dashboards that turn your experiment history into actionable ... insights.

GrowthBook dashboard showing scaled impact, experiment status, win percentage

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GrowthBook @growthbook.io · 04/06/2025

New shirts just dropped, #snowflakesummit! Swing by for the vibes.

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GrowthBook @growthbook.io · 03/06/2025

Hey #snowflakesummit ❄️ swing by our booth and get a T-shirt

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GrowthBook @growthbook.io · 29/05/2025

www.growthbook.io/customers/dr... Dropbox had a problem we've all seen: 6 different experimentation systems. Spoiler: Sometimes the smartest engineering decision is recognizing when someone else has already solved your problem well. What's your team's biggest experimentation pain point?

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GrowthBook @growthbook.io · 29/05/2025

We’re headed to #snowflakesummit 2025 — Snowflake’s annual user conference! ❄️ 📍 Visit our booth in the Expo Hall from June 2–5 to connect with our team and learn more about how you can easily add A/B testing and feature flags to your data stack.

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GrowthBook @growthbook.io · 28/05/2025

🏔️ Heading to #snowflakesummit next week! Our team will be there to connect with data teams who are turning their Snowflake infrastructure into experimentation engines. If you're attending and curious about how to safely roll out features using your existing data warehouse, let's chat!

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GrowthBook @growthbook.io · 21/05/2025

Having trouble finding a feature flag? Search Filters let you narrow down by type, rule, status, and more—so you can skip the scroll and get straight to the flag you need. Now live on GrowthBook Cloud. #featureflags #opensource

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GrowthBook @growthbook.io · 19/05/2025

Building your own A/B testing platform seems like it might not be too hard, but it quickly becomes evident you’re building a complex, high-stakes system, where one bug can invalidate months of work. So how does this happen?

The horse drawing meme. The left polished side says the experimentation platform in my head, while the bad drawing side says the one I actually build

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GrowthBook @growthbook.io · 15/05/2025

Simpson’s Paradox isn’t just a stats classroom curiosity—it’s a real threat to your experiment results. You’ve seen it before: Variation A beats B every day of the week. But when you look at the combined results? Suddenly B wins. What gives?

Simpson’s Paradox
“When combined data tells the opposite story of
its subgroups”
meaning
Simpson’s Paradox happens when a trend appears in separate groups of data but reverses when the groups are combined. It’s usually caused by a hidden variable that influences the results.
Example
In 1973, UC Berkeley appeared to admit men more than women. But within individual departments, women had higher admission rates. The paradox? Women applied to more competitive programs. When that was factored in, the bias disappeared.

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GrowthBook @growthbook.io · 14/05/2025

Some days, experiments can't be clearer: ship, ship, ship. Other days, though, they don't give you a clear answer. They give you context, nuance, trade-offs. Our Experiment Decision Framework (EDF) helps cut through the noise, so you can make a more confident decision. Here's how it works 🧵

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GrowthBook @growthbook.io · 14/05/2025

New in GrowthBook 3.6: Time Series for Experiment Results One of our most requested features is here! You can now visualize how each metric changes over the course of your experiment—day by day, cumulatively, and at no extra cost to your data warehouse. See your experiment’s story unfold over time

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GrowthBook @growthbook.io · 14/05/2025

Just shared a Nature article on how to avoid p-hacking. Now we’re sharing… the poster. 🙅 Don’t be a P Hacker. Run real experiments. Get real results.

A riff on the 1995 hackers movie, where hackers is replaced with p hackers

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GrowthBook @growthbook.io · 08/05/2025

Where are our @jira fans? Did you see that we recently launched an official GrowthBook for Jira integration that makes it super simple to add feature flags and experiments right from your issue? You can even see experiment statuses right from Jira 😮

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GrowthBook @growthbook.io · 05/05/2025

How do you know your feature actually works in prod? Use Safe Rollouts to catch regressions early, letting you ship faster and more confidently 💪

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GrowthBook @growthbook.io · 02/05/2025

GrowthBook 3.6 is live - Safe Rollouts for metric-guarded launches - Time Series View in experiment results - Official Jira Integration to keep the PMs happy - Decision Framer Events/API for custom workflows - Dev Tools for SSR apps (yep, backend friendly now) - JSON column support in Fact Tables

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GrowthBook @growthbook.io · 25/04/2025

Are you teaching to the test? Breeding cobras? Letting the measure become the target? Goodhart's Law reminds us, "When a measure becomes a target, it ceases to be a good measure." This comes up all the time in A/B testing and experimentation.

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GrowthBook @growthbook.io · 18/04/2025

Do you know where your feature flags are? Multiplying flags quickly lead to tech debt, confusion, and more bugs. That's why we offer several tools to help you manage your flags, including this fan fave, code refs, which shows exactly where a flag lives in your codebase, directly from GrowthBook.

GrowthBook UI showing the code refs feature, which shows where feature flags live in your codebase

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GrowthBook @growthbook.io · 16/04/2025

Feature flagging at scale requires tools that can keep up. Start building a stronger, safer release process: 💪 blog.growthbook.io/feature-flag...

this is fine meme but with orange flags instead of flames

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GrowthBook @growthbook.io · 22/03/2025

🚨 Your AI model is lying to you. Offline metrics look great, but real users? Not so much. A/B testing isn’t optional—it’s survival. Learn why (and how to do it right): 🔗 blog.growthbook.io/how-to-a-b-t... P.S. Model decay is real. Don’t let your AI become a $$$ black hole.

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GrowthBook @growthbook.io · 08/03/2025

Our Dev Tools have been completely revamped for easier debugging and testing of feature flags and experiments. The update simplifies understanding user assignments to specific variations and is now available on both Chrome and Firefox! 🛠️

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GrowthBook @growthbook.io · 27/02/2025

We are at Experimentation Island 🏝️ Come visit to chat testing and do our treasure hunt! #Ei2025

conference booth for GrowthBook at Experimentation Island

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GrowthBook @growthbook.io · 17/01/2025

Stop compromising between customization & convenience. With Custom Fields and Pre-Launch Checklists, you get all the power of a totally bespoke experimentation platform—without having to build it yourself

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GrowthBook @growthbook.io · 10/12/2024

Are you feature flagging and A/B testing on the cutting edge? Check out our latest tutorial where we build a real dynamic, SSR landing page for a fictional FinTech app, Bayes Bank. The tech stack: 🦖 @deno 🔥 Hono 📚 GrowthBook (of course!)

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GrowthBook @growthbook.io · 22/11/2024

Do you know Twyman's Law? It says that if your results stand out or are surprising, then it's likely due to an error in data collection, analysis, or interpretation. It's a reminder to be skeptical when the results seem too good to be true. Womp womp. #statsky #datascience

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GrowthBook @growthbook.io · 20/11/2024

How much of your dev time is wasted? Worse, what if the features you're releasing is actually negatively impacting your metrics? Find out how to focus your team on features that users actually want—and stop building stuff that just collects dust. Sign-up bit.ly/3ZexiQU

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GrowthBook @growthbook.io · 20/11/2024

5/ Bad Statistics Don't peek at results early Avoid cherry-picking metrics Let your data team be the voice of truth Remember: The truth might sting, but it's worth it 📊

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