pipecat/changelog/4401.fixed.md

• Fixed GrokRealtimeLLMService ignoring the configured model. The model was stored in Settings but never sent to xAI, so every session silently fell back to the deprecated grok-voice-fast-1.0. The model is now passed via the ?model= query parameter on the WebSocket URL as xAI's Voice Agent API requires, and the default has been updated to the recommended grok-voice-think-fast-1.0.