Hey all <!here>, Week 3 of Launch Month 🗓️ is upon us. Like many of our features, this week's came out of an annoying problem we kept running into: To answer basic data questions, we had to leave GrowthBook and pop over to Mode/Looker/Another Tool just to write some simple SQL and generate a chart. No longer! SQL Explorer is now live, which is a lightweight, built-in SQL editor that lets you query your data, create visualizations, and save results right inside of GrowthBook. Read more about it and let us know if it's as helpful to you as it is to us.

Happy Wednesday everyone <!here>. We're back for week 4 of Launch Month. We're announcing 2 big features to make your lives easier: Managed Warehouse Setting up a data warehouse can be difficult. To help, we're launching a new Managed Warehouse available to users on cloud. Here are the benefits: • 1-click setup and zero maintenance • Data arrives within seconds • Queries are crazy fast and free Under the hood, it's powered by ClickHouse, giving you raw SQL access and other warehouse native benefits—without the headache or cost. Feature Usage Analytics Tied to the new Managed Warehouse, we're also launching Feature Usage Analytics. For each feature flag, see how often it's been evaluated, which values are being served, which rules are being hit, and more. It makes debugging and feature management that much easier. See our blog post for more details: https://blog.growthbook.io/growthbook-launch-month-week-4/

SQL Explorer is one of our most used new features. Here are 3 common use cases to introduce to the new feature: https://blog.growthbook.io/sql-explorer-time-to-be-the-marco-polo-of-your-data/ And, Michael and I made a, too, if that's more your speed:

<!everyone> 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. https://blog.growthbook.io/growthbook-version-4-0/ Tell us what you're most excited about—or what you want us to build next 👀

How are you liking the brand new homepage? Guy, who built it, and I take a tour in our latest vid:

We're now live on the Vercel Marketplace, making it easier to experiment at scale: https://blog.growthbook.io/vercel/

Any Sanity users? We have a brand new tutorial and video on how to A/B test with Sanity, GrowthBook, and Next.js: https://docs.growthbook.io/guide/sanity Which tutorial should we make next?

where we ran through all the new AI-powered features that we recently launched, including: • Automatic experiment analysis and summarization - Generate key findings from your metrics instantly • Custom AI prompts - Tailor AI outputs to match your organization's voice and needs • Hypothesis validation - Ensure experiment quality with AI-powered hypothesis checking • Auto-generated metric descriptions - Make metrics discoverable and understandable across your team • SQL query generation - Create complex queries without coding experience • Duplicate experiment detection - Avoid wasting time on previously-run tests Are you using any of these features yet? What do you want to see next?

We are experiencing issues with our Auth provider on GrowthBook Cloud. We're currently investigating and will update here as we learn more

Hey <!everyone>! Our 4.1 release is now live: • Holdouts: This oft requested experiment type lets you measure long-term cumulative impact. • Custom Dashboards: Create custom views with key metrics, graphs, charts, and more • AI: Customizable AI to help you write SQL faster, find similar experiments, enforce hypothesis standards, and more • MCP Updates: Create experiments right from your chatbot of choice • Native Vercel Integration: Unified billing, edge SDKs, and central management • Pre-computed Dimensions: Instant breakdowns with zero query time. • FerretDB support: MongoDB compat without the licensing headaches @brief-sugar-18836 • Sanity CMS integration: Create experiments right from your content editor • AND SO MUCH MORE, Y'ALL Feedback always welcome 🫶 and let us know what you want us to build next 🛠️ https://blog.growthbook.io/growthbook-version-4-1/

Hey <!everyone>! GrowthBook 4.2 is here 🎉 We’re excited to announce the beta version of GrowthBook Product Analytics—now you can analyze product performance, deploy new features, and measure their impact all in one place. Also new in 4.2: Experimentation at Scale: • Metric slices simplify metrics design and management • Incremental refresh improves query performance and reduces compute costs by up to 85% The Statsig to GrowthBook Migration Kit cuts migration time from days to hours. 🎤 Join our live demo on Dec 4 at 10 AM PT and bring your questions. 📖 Read the full blog post for details

Have you checked out Product Analytics yet? Join us for a live demo and bring your questions! Thursday, Dec. 4, at 10am PT / 1pm ET I'll be there with Luke Sonnet and Ashley Stirrup and we'll go over: • Discover new insights and share them using Product Analytics • Slice and dice your data with less complexity using Metric Slices • Reduce query costs by 85% with Incremental Refresh • Plus, the best of our 2025 releases https://us06web.zoom.us/webinar/register/WN_D4kIShXoQTaO9hJCFmxVqQ#/registration

<!everyone> Quick reminder: Join us Thurs., Dec 4 at 10 AM PT for a live demo of GrowthBook 4.2, showcasing Product Analytics 📈 Bring your questions! Register now to save your spot.

Hey <!everyone>! I've gotten several messages asking if our 4.2 webinar was recorded. It was 🎉 Check it out on YouTube:

https://youtu.be/pNYlAWwZsuI▾

The webinar covers: • New features in 4.2 • A full walkthrough and demo of our brand new Product Analytics • Highlights of everything we built in 2025 (there's so much) There are chapter markers, so you can jump around. Feel free to ask any follow-up questions here.

<!everyone> Heading to Experimentation island (#Ei2026)? We are! This isn’t just another conference. It’s an all inclusive learning and networking event on St. Simons Island, GA, on February 24-26. • Here’s an early access link to register today • Use the code “GrowthBook!” to save $150 Ei2026 is a retreat-style, all-inclusive conference built for 150 curated peers across in-house brand teams, agencies, and vendors. We hope to see you there! P.S. I attended last year and highly recommend if you're looking to level up your experimentation skills and meet others in the field. Feel free to DM if you have questions.

<!everyone> Don't forget to sign up for our 4.3 office hours next Thurs., Feb 19 at 10:00 AM PT. I'll be joined by Luke (Data Scientist) and Adriel (Engineer) to walk through the top features from this release: • Get results faster with post-stratification • Metric drilldowns for understanding your experiments better: Click into any metric to see trends over time, compare with and without statistical adjustments, and break down by slice. • Debug what's happening with feature diagnostics, which tells you how you're flags actually evaluated in production • Lots more! We'll also be available to answer any questions you have about GrowthBook. 👉 Register for Office Hours

Thank you all who attended our office hours today 🎉 ICYMI, here's the recording:

<!everyone> 🚨 Final Reminder 🚨 We're hosting a new upcoming webinar on designing experiments for long-term growth with Ronny Kohavi (former VP & Technical Fellow at Airbnb, Microsoft & Amazon) and GrowthBook's Luke Sonnet (Head of Data Science). They’ll share real-world examples of experimentation gone wrong and the best practices that prevent it: • How to select and design metrics that matter • Why shipping flat features can hurt you • How to ensure your winners today don't become losers tomorrow • Common mistakes that lead to critical misinformation 🗓️ Tuesday, March 3, 9AM PT Register: https://us06web.zoom.us/webinar/register/7817695505593/WN_1jSNg4gBS8i8XfyflDbe5w 🎟️ We'll be raffling off 3 tickets to Ronny's next webinar to live attendees. So be sure to watch live!

Hi <!everyone>, we're hosting a webinar next month with Dr. Kelli Hill, Sr. Director of Insights at Khan Academy, Dr. Hill will share how Khan Academy built an experimentation discipline across research, analytics, and engineering and how that journey led to experimenting on Khanmigo, their generative AI tutor. Her team now combines: • A/B testing • AI-driven evaluation • metrics focused on learning quality and responsible AI If you're thinking about how to test prompts, models, or AI-powered product features, this should be a great session. 🚨 Registration is open! Khan Academy’s Journey to Experimentation April 16 @ 9am PDT We'd love for you to join us!

⏰ _*Today @ 9am PDT*_: Dr. Kelli Hill (Sr. Director of Insights, Khan Academy) joins us to talk about how her team experiments on Khanmigo, their generative AI tutor. A/B testing + AI evaluation + responsible AI metrics => all in one session. Register now if you haven't!

We’ve seen firsthand how experimentation is driving impact at scale across GrowthBook customers, and the 2026 Experimentation Culture Awards is a chance to be recognized for it by peers across the industry. This is an opportunity to showcase what your team has built, celebrate the outcomes you've driven, and position your experimentation program among the leading teams in the space, all while sharing insights that help the broader experimentation community grow. Since 2020, the awards have highlighted organizations building strong experimentation cultures and scaling smarter decision-making across teams and companies. Past nominees and winners have included teams from Atlassian, John Lewis & Partners, Decathlon Digital, Unicef España, Vinted, LeoVegas Group, Universal Destinations & Experiences, and more. There are four award categories 🏆 1. 📊 Decision Intelligence: Rewarding growth in quality, metrics, decision frameworks, better guardrails. 2. 🧠 Learning Organization: Rewarding growth in capability building, knowledge reuse, experiment repositories, learning loops. 3. 🤖 AI in Experimentation: Rewarding growth in scaling AI usage, safe AI decisioning, AI insight extraction. 4. 🏢 Experimentation at Scale: Rewarding growth in leadership adoption, democratization, governance, org-wide expansion. The commitment is minimal: a short application and, if nominated, a 30-minute interview. Applications close May 31, 2026. GrowthBook is proud to be a sponsor this year. We’d love to work with you directly to shape a strong submission that clearly frames your impact, highlights key outcomes, and brings your story to life. Book a 30 minute workshop with our team and we'll help get your story submission-ready: 👉 Email elyse@growthbook.io

🚀 Hey <!here>, GrowthBook 4.4 is live! 426 pull requests and 351,114 lines of code to help your teams deliver great products. What’s in it: • Run the full experiment lifecycle end to end via our expanded REST API. • Ask questions in plain language and get back charts and insights with our AI Data Analyst (beta). • Create charts from your warehouse data in a visual UI or query them programmatically via MCP and REST with Explorations. • Manage approvals and compare revisions in the flag change lifecycle with expanded controls • Run automated, time-based rollouts with per-step targeting, guardrail metrics, and approval gates using release plans with ramp schedules. • And many more quality-of-life improvements and bug fixes. Check out our blog post for more details!

Fyxer ran 541 experiments last year and grew from $1M to $35M ARR, with a small team and a lot of AI doing the heavy lifting on research and build. Their CPGO Leah Tharin and Sr. Growth Engineer Ben Fanning are joining us to break down how they pull it off: • One real experiment from idea to result • How testing became a company-wide habit • Where they're taking it this year (bigger, more focused bets) > 🗓️ June 18 · 9AM PT / 12PM ET > Register here Can't make it live? Sign up anyway, the recording goes out to everyone.

🚀 You're invited to join the early access list: Introducing GrowthBook's NEW AI-based Visual Editor Our AI-based, no-code editor lets anyone build and launch experiments. Just describe the change in plain English and the editor handles the rest. • Empower non-technical users to create website variants in minutes • Use prompting to change text, images, buttons and more • Automatically learns and suggests improvements • Run experiments without technical resources ☁️ Cloud accounts only: Early access begins June 22. 👉 Join the list and we’ll get you set up. Early access includes a live session with Graham McNicoll, co-founder of GrowthBook and engineer behind the Visual Editor on Monday, June 22 at 12:30 PT / 3:30 ET.

Hi folks, we're excited to share our new GrowthBook Skills for AI agents! We've shipped a skills library that lets you run GrowthBook directly from your AI agents, whether that's Claude, Cursor, or anything that follows the Agent Skills standard. The skills cover the flag and experiment lifecycles end-to-end. To try them out, check out the repo + install instructions. It's open source, and we're actively building out new skills. We'd really love your feedback on what's useful, what's missing, and what you'd want your agents to be able to do with GrowthBook next.

Hey everyone 👋 We're hosting a webinar on July 16 with Ronny Kohavi and Luke Sonnet on what makes experiment results trustworthy. The short version: a "winning" test can still be wrong if it isn't properly validated. We'll cover: • Why statistical significance isn't enough • How Sample Ratio Mismatch and underpowered tests distort results • The checks to run before acting on any experiment Register here! Happy to answer questions or point you to resources.

Experiments are one of the best tools we have for informing decisions. But like any tool, they can be misused, and their value falls apart fast when they are. This Thursday (don't miss it!!!), Ronny Kohavi and Luke Sonnet walk through 6 core problems that undermine the trustworthiness of experiments. Underpowered tests, exaggerated effects, peeking, and a few others that push your metrics the wrong way and leave good learnings on the table. If you run an experimentation program, join the webinar to learn how to spot them. 👀 Sanity checks to conduct with every experiment 📆 Thursday, July 16 at 9am PT / 12pm ET 🔗 Register here 📹 Luke shares a quick preview in the

GrowthBook 5.0 is here! This release brings improvements across the platform, including: ✨ AI agents with Skills, MCP, CLI, and our new in-app assistant 🎨 An AI-native Visual Editor with image generation and Figma support ⚡ Faster experimentation workflows and warehouse performance 🛡️ Stronger feature flag governance 📊 Product Analytics is now generally available 5.0 is live on Cloud and available for self-hosted deployments. We’ll be sharing a deeper look at each area throughout the week, starting with agents today. Join us for Office Hours on Thursday, July 30 at 9:00 AM PT to see it all in action.

5.0 was one of our biggest releases ever. If you missed it, watch the release office hours in the Product Hunt post for a summary of all the new features now available! If you're excited about the direction GrowthBook is heading with our integrated AI, new AI Visual Editor, Product Analytics, governance and more... give us a like/share to help spread the word. https://www.producthunt.com/products/growthbook?utm_source=other&utm_medium=social

Sharing something coming up for anyone rolling out experimentation beyond a single team. On Aug 20, at 9am PT / 12pm ET The Philadelphia Inquirer is joining us to break down how they got marketing, product, and their newsroom all collaboratively testing under one set of standards, instead of running experiments in silos. They'll cover the governance that made it work and three real experiments, including how the not-so-successes have driven their decision-making process. We'll send out the recording to everyone who registers. Register here!