Case study: build a SaaS landing site
Same prompt, one shot, no hand-holding: "build a complete, production-quality SaaS landing site." Sent to 15 different models through codelazr, each to its own fresh repo, each deployed for real. No cherry-picking - every attempt is shown below, including the ones that didn't work.
The exact prompt used
Select all, copy, paste it yourself - same instruction, word for word.
Build a single-page SaaS landing site using Next.js (App Router), TypeScript, and Tailwind CSS. It should feel like a premium startup site (Linear, Vercel, Stripe) - not a generic template. ## Design Dark mode, near-black background (#080808), white text, electric lime + cyan + purple accents, soft glows. Glassmorphism cards, soft borders, subtle glow effects, rounded-xl/2xl corners. Tasteful hover/fade motion - alive but not distracting. Fully responsive, semantic HTML. ## Single page (/) - all in one file plus a few components - Sticky navbar (logo, nav links, Sign In, Get Started CTA) - Hero: bold gradient headline, subheading, primary + secondary CTA - Feature grid (6 features) - 3 testimonials with names/avatars/companies - Pricing section (3 tiers: Free/Pro/Team, cards only, no separate page) - FAQ (4-5 questions) - Final CTA + footer ## Components Build 4-5 small reusable components (Navbar, Footer, GlassCard, PricingCard or similar) - not one giant file, but keep it tight. ## Copy Real, compelling SaaS marketing copy - no lorem ipsum. ## Goal Should look and feel like it could launch on Product Hunt today - polished and visually impressive, built efficiently in one focused page rather than a full multi-page site.

tencent/hy3:free

poolside/laguna-m.1:free

cohere/north-mini-code:free
Fast, reliable at bug-fix/build-error tasks in our testing.

poolside/laguna-xs-2.1:free

nvidia/nemotron-nano-9b-v2:free

openai/gpt-oss-120b

deepseek/deepseek-v4-flash

xiaomi/mimo-v2.5

google/gemini-3-flash-preview

stepfun/step-3.7-flash

deepseek/deepseek-v4-pro

google/gemini-2.5-flash
Build had an error, fixed to deploy.

minimax/minimax-m3

z-ai/glm-5.2
Didn't complete this round
Mostly hit our task time limit on a build this large - a real, known constraint, not hidden here.
Every repo and live deployment is real and public. Nothing here is staged.
Full testing history and methodology: /stats.