Beyond the Model: How We Engineered a #1 AI Video Product from Scratch

Most "AI Video" discussions are obsessed with parameter counts and transformer layers. But as engineers, we know the truth: A great model is only 20% of a great product. When we started building Happy Horse , we didn't just want to win benchmarks (though we did hit #1 on the Video Arena). We wanted to solve the "Engineering Mess" that makes AI video a nightmare to integrate into real-world apps. Here’s how we approached the product build from an engineering perspective. 1. Solving the "Frankenst