pipecat/changelog/4074.added.md

• Added OpenAIResponsesLLMService, a new LLM service that uses the OpenAI Responses API. Supports streaming text, function calling, usage metrics, and out-of-band inference. Works with the universal LLMContext and LLMContextAggregatorPair. See examples/foundational/07-interruptible-openai-responses.py and 14-function-calling-openai-responses.py.