FastGPU is a live price comparison for cloud GPUs. It tracks what H100, H200, B200, A100, RTX 4090, MI300X and other GPUs rent for across marketplaces, neoclouds and hyperscalers, cheapest first, and tells you which GPU setup can run your AI job. For larger orders, describe the cluster once and capacity holders quote on it, with every quote shown next to the live public price. Free for buyers, with a free REST API (https://fastgpu.co/docs) and a remote MCP server (https://fastgpu.co/api/mcp) for AI agents.