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GrowthBook

@growthbook.io
158 followers 2.4K following 167 posts

GrowthBook is an open-source feature flagging and experimentation platform. www.growthbook.io

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Reposted by GrowthBook
Alyssa Nicoll @alyssanicoll.bsky.social · 23/09/2026
I'm so excited for us to have as many first time contributors as we did this release! I am really working on pushing our community on GitHub through Discussions and making time for MRs. github.com/growthbook/g... @growthbook.io 5.1 💜💙🩵
The three new discussions we have for our 5.1 release on Github
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Reposted by GrowthBook
Alyssa Nicoll @alyssanicoll.bsky.social · 29/07/2026
Excited to be hosting my first Office Hours @growthbook.io 💥 for our 5.0 release!!
Our red panda welcoming you to our 5.0 office hours
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GrowthBook @growthbook.io · 24/09/2025
Ever wonder if your feature actually moved the needle, or if that metric bump was just seasonal variance? Most teams struggle with this because they can't isolate the real impact of their changes. That's where holdouts come in - and why we just shipped them in GrowthBook. What are holdouts?
blog.growthbook.io
How GrowthBook Holdouts Work Under the Hood
Most holdouts measure only shipped features. Ours measure everything—including failed experiments. This technical deep dive reveals why we chose reality over clean rooms, and how we built it.
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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 · 15/09/2025
As a company, we do things companies do: • Run A/B tests (obviously) • SEO • And now, GEO - optimizing for visibility in AI searches like ChatGPT What's GEO (Generative Engine Optimization)? We were wondering that too, so we did some research. Here are 3 surprising findings:
blog.growthbook.io
The Definitive Technical Guide to Generative Engine Optimization (2025)
Everything you need to know about Generative Engine Optimization (GEO).
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GrowthBook @growthbook.io · 12/09/2025
This week we've been sharing everything included in our latest 4.1 release, which includes: → 150+ commits → 8 major features (holdouts, dashboards, #AI, Vercel, Pre-computed dimensions, MCP, FerretDB, Sanity) → 0 vendor lock-in Curious? Full release notes: blog.growthbook.io/growthbook-v...
blog.growthbook.io
GrowthBook Version 4.1
GrowthBook version 4.1 includes Holdouts, Dashboards, AI features, and More!
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GrowthBook @growthbook.io · 11/09/2025
We're just going to go ahead and say it: GrowthBook is the most comprehensive open-source experimentation platform. Now with #FerretDB support. Because open source means ALL the way down. Learn more: docs.growthbook.io/self-host/fe...
docs.growthbook.io
FerretDB | GrowthBook Docs
How to use FerretDB with GrowthBook
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GrowthBook @growthbook.io · 11/09/2025
Sanity offers a powerful content management solution that effortlessly integrates with GrowthBook, enabling you to conduct experiments directly from your content editor without altering any code. This approach allows you to benefit from feature-flag experiments seamlessly.
youtube.com
A/B Testing Made Easy: Sanity + GrowthBook + Next.js Tutorial
Stop hardcoding A/B tests! Learn how to build a professional experimentation system where your content team can create and manage A/B tests directly with Sanity, while GrowthBook handles the…
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GrowthBook @growthbook.io · 10/09/2025
GrowthBook is now native on Vercel Marketplace 🎯 What this means for your Next.js apps: → One-click installation → Unified billing (one less vendor to manage) → Edge-ready performance (we're talking microseconds) → Feature flags that actually work at the edge
vercel.com
GrowthBook for Vercel – Vercel
Open source experimentation and feature flag management.
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GrowthBook @growthbook.io · 10/09/2025
We've introduced practical AI features in GrowthBook 4.1: 🤖 Auto-summarize experiment results 📊 Generate SQL queries from natural language 💡 Enhance experiment hypotheses with AI 🔍 Automatically find similar past experiments ➕ Customize prompts for your org 🙅 Prefer no AI? Disable it entirely.
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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
custom dashboard in GrowthBook
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GrowthBook @growthbook.io · 09/09/2025
The issue with A/B tests? They conclude. But what about tracking the combined effect of 50 updates over six months? Enter Holdouts: the perpetual experiment. Keep 5% of users on the initial experience, while others enjoy new features. Gauge the true long-term impact of your product changes.
blog.growthbook.io
Holdouts in GrowthBook: The Gold Standard for Measuring Cumulative Impact
Many teams ship features weekly but struggle to measure their true cumulative impact. Holdouts in GrowthBook provide a simple way to maintain a control group across multiple features, answering the…
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GrowthBook @growthbook.io · 04/09/2025
Most holdouts measure only shipped features. Ours measure everything—including failed experiments. Because that's what your users actually experienced. Technical breakdown → blog.growthbook.io/holdouts-dee...
blog.growthbook.io
How GrowthBook Holdouts Work Under the Hood
Most holdouts measure only shipped features. Ours measure everything—including failed experiments. This technical deep dive reveals why we chose reality over clean rooms, and how we built it.
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GrowthBook @growthbook.io · 03/09/2025
Experiments showed +5%, +3%, +7% wins, but do they really add up to +15%? Likely not, as Airbnb found naive sums can overstate impact by 2x. GrowthBook now offers ✨ Holdouts ✨ for accurate metric measurement:
blog.growthbook.io
Holdouts in GrowthBook: The Gold Standard for Measuring Cumulative Impact
Many teams ship features weekly but struggle to measure their true cumulative impact. Holdouts in GrowthBook provide a simple way to maintain a control group across multiple features, answering the…
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GrowthBook @growthbook.io · 03/09/2025
Another big week for the experimentation industry: OpenAI has acquired Statsig for 1.1B. Graham shares his thoughts on the acquisition and our new Statsig to GrowthBook migration kit: www.linkedin.com/posts/graham...
linkedin.com
Announcing the Statsig to GrowthBook Migration Kit
For those customers who want more certainty and innovation from their experimentation platform, I’m happy to announce the Statsig to GrowthBook Migration Kit. This kit allows customers to migrate from Statsig to GrowthBook in minutes. Customers will be able to import all projects, environments, and feature flags. Imports will include fallback values, targeting rules, rollouts, and prerequisite features.
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GrowthBook @growthbook.io · 27/08/2025
It's possible to build beautiful sites with Framer. But how do you know if they actually convert? You don't unless you test! Our official plugin for Framer lets you do enterprise-level experimentation on your components. Our tutorial helps you get set up in minutes. youtu.be/XqHDLbYCfTM?...
youtu.be
Add Pro A/B Testing to Framer in Minutes (GrowthBook Plugin)
Stop guessing what converts. Start knowing. In this tutorial, I show you how to add enterprise-level A/B testing to your #framer site in minutes using the GrowthBook plugin. No coding required,…
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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 · 18/08/2025
Here's the tutorial you've been looking for: #Sanity + #Next.js + GrowthBook Ryan provides a comprehensive walkthrough of everything you need to know to set up an enterprise-grade experimentation system that everyone on the team can use! youtu.be/tg85K9K_8-g
youtu.be
A/B Testing Made Easy: Sanity + GrowthBook + Next.js Tutorial
Stop hardcoding A/B tests! Learn how to build a professional experimentation system where your content team can create and manage A/B tests directly with Sanity, while GrowthBook handles the…
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GrowthBook @growthbook.io · 18/08/2025
Graham and Ryan demo all the new AI-powered features recently released in GrowthBook. The best part? Every AI prompt is fully customizable. Want results in haikus? Different language? Your company's tone of voice? You control it all. youtu.be/jhyGxknbGk0
youtu.be
Introducing GrowthBook AI: 6 New Features for Smarter Experimentation
Discover how GrowthBook is revolutionizing A/B testing and experimentation with powerful AI features! In this demo, GrowthBook CEO Graham and Developer Advocate Ryan showcase the latest AI-powered…
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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 · 05/08/2025
The AI Revolution Isn't Our First Rodeo 🎢 When electricity arrived in the 1880s, most factories just swapped steam engines for electric motors. Same layout. Same processes. Electric lightbulbs where gas lamps used to be. Then Henry Ford reimagined everything.
blog.growthbook.io
Building in the AI Era: Lessons from Past Technological Revolutions
Why bolting AI onto existing products is like adding lightbulbs to steam factories. Lessons from Ford to ChatGPT on truly transformative tech adoption.
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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 · 29/07/2025
GrowthBook is now live on @vercel Marketplace!
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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 · 14/07/2025
Welcome Home! Our homepage just got a major overhaul 💅 Get instant access to recent experiments and features, see what needs attention, and more. In our latest video, Guy gives Ryan a guided tour of all that's new: www.youtube.com/watch?v=tLjr...
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GrowthBook @growthbook.io · 10/07/2025
blog.growthbook.io/growthbook-v...
blog.growthbook.io
GrowthBook Version 4.0
GrowthBook 4.0 includes a huge number of new features and updates. Continue reading for a full list of changes.
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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.
Here's the alt text for this image:
Alt text: "GrowthBook 4.0 feature announcement graphic with purple background. Header reads 'We shipped so many features in June it deserved a major version bump. Introducing GrowthBook 4.0'. Contains 10 numbered featuresGrowthBook logo appears at bottom.
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GrowthBook @growthbook.io · 08/07/2025
One size doesn't fit all in experimentation Classic A/B tests → Learning from 2-3 options Safe Rollouts → Shipping without breaking things Bandits → Picking winners from many variations Different tools for different goals. Learn more 👇 blog.growthbook.io/flavors-of-e...
blog.growthbook.io
Flavors of Experimentation in GrowthBook
GrowthBook provides you with 3 different types of experimentation for different purposes: Bandits for picking a winner among many, Safe Rollouts for releasing safely, and Experiments for learning.
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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 · 02/07/2025
What if experimentation platforms came to YOU instead of the other way around? Try GrowthBook's MCP server and experience the weirdness of conversational experimentation yourself. blog.growthbook.io/experiment-w...
blog.growthbook.io
I Started Talking to My Experiments with MCP. Here's What Happened
A platform builder discovers why experimentation tools need to become more fluid. How MCP and conversational AI are creating experimentation's ambient era.
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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 iconMyth 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 illustrationsMyth vs Reality slide: 'They add complexity to your codebase' vs 'Technical debt from flags < Technical debt from broken releases.' Features explosion/computer crash illustrationMyth 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.
Feature flags
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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 · 12/06/2025
Every experiment teaches you something valuable. But only if you can find and apply those learnings later. We just launched a searchable database of experiment outcomes and insights to make this easier. Now you can find out what your experiments have been trying to tell you.
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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 · 10/06/2025
Week 2 of Launch Month: Insights. Turn your experiment history into strategic advantage with 5 new dashboards: → Executive reporting → Searchable learnings → Timeline visualization → Metric effect analysis → Correlation discovery The more you test, the smarter it gets.
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GrowthBook @growthbook.io · 06/06/2025
That's a wrap, #snowflakesummit! We had a blast chatting with everyone about how our open source experimentation platform integrates seamlessly with Snowflake to accelerate A/B testing workflows. If you didn't get a chance to talk to us, drop a DM—we'd love to continue the conversation
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GrowthBook @growthbook.io · 04/06/2025
New shirts just dropped, #snowflakesummit! Swing by for the vibes.
t-shirt that says AI made this tshittie-dyed t-shirt that says vibe coder
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GrowthBook @growthbook.io · 03/06/2025
Hey #snowflakesummit ❄️ swing by our booth and get a T-shirt
stack of very cool T-shirts
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GrowthBook @growthbook.io · 03/06/2025
GrowthBook Launch Month. Week 1. That's right, we have so many exciting things to launch, we had to make it a full month. Click through for even safer rollouts, search filters, #MCP, and our experiment decision framework:
blog.growthbook.io
GrowthBook Launch Month - Week 1
This June is our Launch Month!  Every week, we’ll announce major new features and changes to GrowthBook that you can try out early, before the final release at the end of the month.
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