What I Learned from “I Built OpenRouter From Scratch in 4 Hours” — A Simple Developer Breakdown
Dev.to AI
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Generative AI
There are some videos you watch for entertainment. There are some you watch for inspiration. And then there are videos that genuinely change how you think about building products. Recently, I watched Harkirat Singh’s video, “I Built OpenRouter From Scratch in 4 Hours,” and I found it genuinely valuable, not because it was just another AI project, but because it showed how a real developer product can be broken down, understood, and rebuilt from first principles.