The fastest way to use the Claude API in Python is to install anthropic, set your API key, and call client.messages.create(). You’ll have a working response in under a minute.
Claude is Anthropic’s large language model, accessible via a clean REST API with an official Python SDK. Unlike heavier AI frameworks that require you to wire up multiple components before you see any output, the anthropic package gets you to a working response in a handful of lines.
In this video course, you’ll install the anthropic SDK, call Claude from Python, shape Claude’s behavior with a system prompt, and then return structured JSON output using Pydantic.
Note: Claude’s responses are non-deterministic, so the same prompt produces different output each time, which is expected for a large language model. Also, API calls cost money based on the number of tokens processed. Keep an eye on your usage in the Claude Console as you follow along.
Each lesson builds on the last, and the final script is short enough to read in one sitting but complete enough to extend into a real application of your own.
