Python for AI Engineering· day 24 of 30
DAY 24Python

Calling an LLM API (Claude, OpenAI, Gemini)

Day 24 of Python for AI Engineering, and the start of Module 9. Make real calls to a large language model. See Claude, OpenAI and Gemini side by side — the same request/response shape, three SDKs — using everything from Module 8: a key from .env, an API call, and parsing the reply. Includes a no-API-key mock so you can follow along without an account.

Jun 23, 2026 11 min read2.2k words

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