A realtime provider handles speech in and speech out with a single model. Instead of transcribing the caller, sending text to a language model, and speaking the reply, one model does all three at once.
The result is a faster reply, and a model that hears tone and pacing rather than just words.
Supported providers
What changes when you use one
A realtime provider replaces the voice and transcriber, but you must still configure an LLM. It runs the work the realtime model does not: extracting variables and running QA analysis after the call. Without one, those features silently produce nothing.
Turning it on
Enable Realtime in Model Configurations to use it everywhere, or switch a single workflow to realtime from its Model Overrides tab.
Credentials come from a connection, same as any other provider. 
