Open Responses vs. Chat Completion: A new era for AI apps
SMRTR summary
OpenAI transitioned from Chat Completion API to Responses API in March 2025, addressing limitations of stateless chatbots for agentic applications. The new Open Responses specification, developed with partners like Nvidia, Vercel, and Hugging Face, standardizes multi-provider LLM interfaces with stateful conversations, tool integration, and multimodal support, solving vendor lock-in while enabling portable AI applications.
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