Claude Code benchmark shows build-first defaults

This reads less like a product comparison and more like a map of what Claude Code considers “standard” software. For vendors, that’s the uncomfortable part: the agent’s defaults can shape what gets shipped before a human even looks at alternatives.

• –Custom/DIY wins in 12 of 20 categories, especially feature flags, auth, caching, and observability, which means the model often prefers to synthesize a solution instead of naming a vendor
• –The strongest defaults cluster around the modern JS app stack, with GitHub Actions, Vercel, PostgreSQL, shadcn/ui, Stripe, and Zustand repeatedly surfacing as the path of least resistance
• –The study is about revealed preference, not quality or market share, so “rarely picked” does not mean “bad” or “unpopular”
• –The practical takeaway is distribution power: if an AI agent is choosing the stack, documentation, examples, and training prevalence matter almost as much as product features