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GrowthBook (YC W22) — Open source feature flagging and A/B testing

GrowthBook is an open source platform to help companies make data-driven product decisions with feature flags and A/B tests. Existing SaaS solutions like LaunchDarkly require a company to send all of their data to them.

GrowthBook is a Y Combinator company in the Winter 2022 batch. Its directory entry describes it as: Open source feature flagging and A/B testing. The founders listed are Graham McNicoll (Founder), Jeremy Dorn (Founder) (Y Combinator directory entry, February 26, 2022).

6 more companies from YC Winter 2022 ↓

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GrowthBook

New accelerator entry · 2022-02-26 · the record

Winter 2022
batch
46
people
Growth
stage
United States of America
region
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What the record says

BatchWinter 2022
Announced2022-02-26
StageGrowth
StatusActive
Team size46
IndustryB2B
Sub-industryB2B -> Analytics
SectorsDeveloper Tools, B2B, Analytics, Open Source
RegionsUnited States of America, America / Canada, Remote, Fully Remote
BasedSan Francisco, CA, USA; Remote
HiringYes
Sitehttps://www.growthbook.io
Previously known asGrowth Book

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Also in YC Winter 2022

Same batch, B2B first.

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In their words

GrowthBook is an open source platform to help companies make data-driven product decisions with feature flags and A/B tests. Existing SaaS solutions like LaunchDarkly require a company to send all of their data to them. This results in high costs, data compliance issues, and vendor lock-in. As a result, many companies end up building their own platforms in-house, which can take thousands of hours of work and lots of headaches. To solve this, GrowthBook uses a company's existing data infrastructure and business metrics. We believe feature flags and experimentation are the right way to build products at scale and that they will become a standard part of the development process. GrowthBook is well positioned to be a leader in this growing market.

Want the whole picture on GrowthBook?

Example from a real report (our sample on Target): “Target eliminated approximately 1,800 corporate positions, with around 1,000 employees receiving layoff notices and the remainder accounted for by eliminating open roles.” Source: NBC News

A Full Report on GrowthBook: verified, sourced, every claim cited, ready in a few minutes. See pricing.

What the Full Report on GrowthBook covers

  1. The Short Answer

  2. Which Company This Is

  3. What They Do, And How The Money Works

  4. Who Runs It, And How To Reach Them

  5. The Money: Funding, Valuation, Runway

  6. Who Pays Them, And Who They Are Up Against

  7. Warning Bells

  8. Sources

    1 cited source found

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Sourced from the company's Y Combinator directory entry.

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GrowthBook: Accepted into Y Combinator Winter 2022
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Permanent URL: https://mentionfox.com/funding/yc-growthbook
Last updated 2026-10-20
Primary record: Y Combinator directory entry
GrowthBook (YC W22) — Open source feature flagging and A/B testing. MentionFox, 2026-10-20. https://mentionfox.com/funding/yc-growthbook