StackOverflow decline and AI impact

CJ presents data on falling StackOverflow questions and the broader AI effect on developer tools.

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In this episode of Mostly Growth, Kyle Poyar, CJ Gustafson, and Ben Hillman break down the economics and psychology of “free,” explaining why the jump from free to even $0.01 fundamentally changes behavior. They unpack freemium, free trials, reverse trials, ungated products, and credit-card trials, sharing real conversion benchmarks and CFO-level tradeoffs between acquisition and revenue. The takeaway: “free” isn’t one strategy—it’s a set of levers that must match what you’re optimizing for.

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LINKS:

Mostly Metrics: https://www.mostlymetrics.com

CJ on LinkedIn: https://www.linkedin.com/in/cj-gustafson-13140948/

Growth Unhinged: https://www.growthunhinged.com/

Kyle on LinkedIn: https://www.linkedin.com/in/kyle-poyar/

Slacker Stuff: https://www.slackerstuff.com/

Ben on LinkedIn: https://www.linkedin.com/in/slackerstuff/

https://pubsonline.informs.org/doi/10.1287/mksc.1060.0254

https://www.sciencedirect.com/science/article/pii/S0261517722002059

https://x.com/samwhoo/status/2007590903448514921?s=20

https://techcrunch.com/2026/01/29/guys-i-dont-think-tim-cook-knows-how-to-monetize-ai/