pipecat/changelog/4142.changed.md

• GrokLLMService and GrokRealtimeLLMService now live in the pipecat.services.xai module alongside XAIHttpTTSService, since all three use the same xAI API. Update imports from pipecat.services.grok.* to pipecat.services.xai.* (e.g. from pipecat.services.xai.llm import GrokLLMService).