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Calling LLM APIs with JavaScript

Time to write some code. In this tutorial, we’ll go from zero to making LLM API calls in JavaScript — setting up a project, making your first completion request, managing conversations, handling errors, and building a simple interactive chatbot. We’ll use the OpenAI API as the primary example since it’s the most widely used, but the patterns apply to any LLM provider. You should be familiar with the concepts from What is Generative AI? Read more →

March 28, 2026