Karo Zieminski's Posts | ContraPosts by Karo Zieminski

Karo Zieminski

AI Product Manager, Builder & Substack Bestseller.

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Copenhagen, Denmark

Copenhagen, Denmark

Share ideas, connect with others, and expand your reach.

karozieminski.substack.com

Claude Design Review: 48-Hour Builder’s Test + Hero Prompts

I spent 48 hours testing Claude Design on Opus 4.7. The prompts, the credit traps, and why the “Figma is dead” take is louder than it is true.

open.substack.com

ChatGPT 5.2: What It Really Changed, And Why The Internet’s Take Is Mostly Wrong

Why “it feels worse” is the wrong metric for evaluating GPT-5.2.

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