AnalysisDevelopersOctober 22, 2026

Jellyfish data: swapping coding models barely moved merged PRs

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Jellyfish's Nicholas Arcolano analyzed data from ~50,000 engineers at 447 companies; when Cursor pushed many users onto Grok, merged PRs barely moved. A separate Jellyfish talk reports AI spending up 60x while allocated cost per merged pull request fell.

People · Nicholas Arcolano, Steve Jamison

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