Sharing some notes from OpenAI DevDay in parts. The first part matters, since it's on everyone's mind. How do you optimize for cost and performance? If you are building agentic applications today, these are 4 of the most important levers you absolutely must try: - prompt caching - reasoning effort - programmatic tool calling - batch request The OpenAI dev docs have plenty of information, but these alone are good starting points for optimizing your agentic applications. Familiarize…