OpenAI Responses API Patterns for Agent Applications (ANSWERED)
TL;DR — Quick Answer
Responses API unifies conversation items, tools, and structured outputs in a single call pattern with improved streaming and state handling — design agents around item lists, hosted tools, and explicit previous_response_id chaining.
The Interview Question
Explain the Responses API and how it changes how you build agents compared to legacy Chat Completions + Assistants.
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