Replicate is a platform that hosts thousands of open-source AI models and exposes them through a simple REST API. Instead of downloading models, managing GPU infrastructure, and handling deployments, you call Replicate's API with your inputs and get results back. The service handles scaling, caching, and optimization automatically. The API supports synchronous predictions (wait for result), async predictions (long-running models), and webhooks for event-driven workflows. You can use models for text generation, image generation, audio processing, video analysis, and more.