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The Messy Middle

Charting the messy middle of growth. By the team at GrowthX AI.

Latest Posts

HubSpot invests in GrowthX.ai to turn content into a growth engine

Mar 26, 2026

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4 min read

HubSpot invests in GrowthX.ai to turn content into a growth engine

Marcel Santilli
Marcel Santilli

AI Content

+1

3 moats Cursor and Ramp built before anyone noticed

Jan 30, 2026

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9 min read

3 moats Cursor and Ramp built before anyone noticed

Plus, why we're betting on the 3rd one in 2026.

Marcel Santilli
Jason Gong
Marcel Santilli, +1

AI Content

3 questions to ask before your next A/B test (based on 27,000+ experiments)

Jan 19, 2026

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5 min read

3 questions to ask before your next A/B test (based on 27,000+ experiments)

Plus 7 tests you can steal

Marcel Santilli
Jason Gong
Marcel Santilli, +1

AI Content

4 ways to test if AI fatigue is affecting your conversions

Jan 7, 2026

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6 min read

4 ways to test if AI fatigue is affecting your conversions

+ a real example featuring IBM

Marcel Santilli
Jason Gong
Marcel Santilli, +1

AI Content

4 frameworks from 3,000 growth operators

Dec 23, 2025

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5 min read

4 frameworks from 3,000 growth operators

4 events. 1 framework from each that's worth carrying into 2026.

Marcel Santilli
Jason Gong
Marcel Santilli, +1

Brand

+1

What 50+ brands and 10M words taught us about AI + brand voice

Dec 18, 2025

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9 min read

What 50+ brands and 10M words taught us about AI + brand voice

6 questions your brand guidelines don't answer.

Marcel Santilli
Jason Gong
Marcel Santilli, +1

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Charting the messy middle of growth. By the team at GrowthX AI.