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Company records / growthbook.io

GrowthBook

GrowthBook (growthbook.io): 9 changes recorded in its website history since May 2021. Homepage last checked 6 November 2026.

Recorded changes

Newest observations first. Each interval bounds when the website changed; it is not an exact event date.

  1. TractionBetween and

    Now claims “4,000+ companies” on its homepage (was “3,000+ companies”).

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagecurrent websiteHistorical capture not publicly availableLink to observation
  2. TractionBetween and

    Now claims “3,000+ companies” on its homepage (was “2,700+ Companies”).

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  3. HeadlineBetween and
    BeforeThe #1 Open-Source Feature Flag & Experimentation Platform
    AfterBuild smarter. Ship safely. Grow at the speed of AI.

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  4. HeadlineBetween and
    BeforeExperiment fearlessly, deliver confidently
    AfterThe #1 Open-Source Feature Flag & Experimentation Platform

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  5. HeadlineBetween and
    BeforeDeliver Impactful Software
    AfterExperiment fearlessly, deliver confidently

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  6. HeadlineBetween and
    BeforeOpen source A/B testing & feature flagging
    AfterDeliver Impactful Software

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  7. HiringBetween and

    Opened a job board on Workable.

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  8. Go-to-marketBetween and

    Added a free sign-up or free trial.

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  9. HeadlineBetween and
    BeforeA/B testing for developers
    AfterOpen source A/B testing

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation

First recorded website

Observed 16 May 2021

Our earliest capture with readable facts. This is our first observation, not when the company introduced these things. These website claims are not independently verified.

How it described itself

A/B testing for developers

Growth Book is an in-house experimentation platform as a service. Our platform gives any company the power of a customized testing solution.

archived pageLink to first observation

All facts above belong to this capture. Unlisted fields mean we have no readable observation, not that they were absent.

How it describes itself

Similar headlines are grouped together. The quote shown is from the last capture in each group, not necessarily the exact wording throughout that period.

  1. July 2026 – November 2026 · 2 captures · latest observed messagingBuild smarter. Ship safely. Grow at the speed of AI.

    The 1st warehouse-native platform for experimentation, feature flags, and product analytics. Open source and fully transparent. Trusted by 3,000+ companies.

    This wording observed 6 November 2026.

    current websiteHistorical capture not publicly available
    Inspect 2 captures in this group
    • 12 July 2026 · Build smarter. Ship safely. Grow at the speed of AI. archived page
    • 6 November 2026 · Build smarter. Ship safely. Grow at the speed of AI. current websiteHistorical capture not publicly available
  2. Seen January 2026 · 1 captureThe #1 Open-Source Feature Flag & Experimentation Platform

    GrowthBook is an open source platform that gives any company the power of a customized feature flagging and A/B testing system.

    This wording observed 12 January 2026.

    archived page
  3. July 2024 – July 2025 · 2 capturesExperiment fearlessly, deliver confidently

    GrowthBook is an open source platform that gives any company the power of a customized feature flagging and A/B testing system.

    This wording observed 12 July 2025.

    archived page
    Inspect 2 captures in this group
    • 13 July 2024 · Experiment fearlessly, deliver confidently archived page
    • 12 July 2025 · Experiment fearlessly, deliver confidently archived page
  4. January 2023 – January 2024 · 3 capturesDeliver Impactful Software

    GrowthBook is an open source platform that gives any company the power of a customized feature flagging and A/B testing system

    This wording observed 28 January 2024.

    archived page
    Inspect 3 captures in this group
  5. May 2021 – January 2022 · 3 capturesOpen source A/B testing & feature flagging

    GrowthBook is an open source experimentation platform that gives any company the power of a customized A/B testing solution.

    This wording observed 17 January 2022.

    archived page
    Inspect 3 captures in this group

Cite this record

StartupHistory, “GrowthBook” company record, https://startuphistory.org/c/growthbook.io

Machine-readable: /c/growthbook.io.json. How changes are found: method.