Landing Page for Custom GPT

I need a freelancer to build a landing page that helps me commercialize a custom GPT/ Convert my custom logic into an OpenAI Assistant via the API and build a simple front-end wrapper. The page should be clean, professional, and designed to convert visitors into customers. I’m looking for someone who can create a polished user experience, present the product clearly, and support the overall goal of turning interest into sales. Please share relevant examples of similar landing pages you’ve built.