simonw/llm-prices ? reverse-engineered prompt

Build me a simple website that tracks pricing for different LLMs and lets people view the current prices and the price history over time.

I want the pricing data to live in separate JSON files by vendor, then have a script that combines them into two public JSON endpoints, one for current prices and one for historical prices. Each model should include its name, vendor, token pricing, and optional cached input pricing, plus the dates showing when a price started and ended.

Please also make a clean homepage that presents the data in a readable way, with a way to browse or search models and compare their prices. Keep it as a lightweight static site that can be published to Cloudflare Pages.

If there are any details you need to confirm about the data format or how the site should look, check the current docs online and keep the implementation simple and maintainable.