openai/openai-cookbook

Provides runnable Jupyter notebooks and Python scripts covering practical workflows like embeddings, semantic search, fine-tuning, and retrieval-augmented generation (RAG). Examples demonstrate best practices for prompt engineering, token counting, and cost optimization across GPT and embedding models. The project uses environment-based API key configuration and includes language-agnostic conceptual guidance applicable beyond Python implementations.

72,080 stars. Actively maintained with 5 commits in the last 30 days.