OpenAI Responses API Guide: Web Search, Code Interpreter, and Built-in Tools
The Responses API replaced Assistants API with a simpler design and built-in tools — here's how to use web search, code interpreter, and file search in your apps.
Prompt Caching: How to Cut AI API Costs by 80% (Anthropic + OpenAI)
A practical guide to prompt caching on Anthropic and OpenAI APIs — how it works, what it saves, and the patterns that maximize cache hit rates in production.
