Gemini Phone Assistant Settings

System Prompt

Define how the AI assistant should behave during phone calls. Changes take effect on the next call.

0 characters

Voice

Select the voice for the AI assistant. All 31 voices verified for Gemini 2.5 Flash.

Puck (Default) Zephyr Autonoe Laomedeia Sadachbia Achird (Friendly) Kore (Recommended for Hebrew) Orus Alnilam Pulcherrima (Forward) Charon Rasalgethi Sadaltager Algieba Despina Sulafat Fenrir Vindemiatrix (Gentle) Erinome (Clear) Iapetus Aoede Leda Schedar (Even) Achernar (Soft) Callirrhoe Enceladus Zubenelgenubi (Casual) Gacrux (Mature) Algenib (Gravelly) Umbriel (Easy-going) Perseus

Model

Select the Gemini Live model. Changes take effect on the next call.

Gemini 2.5 Flash Native Audio (Latest) Gemini 2.0 Flash Live 001 Gemini 3.0 Flash Live Preview Gemini 3.1 Flash Live Preview

Temperature

Controls randomness in responses (0.0 = deterministic, 2.0 = highly creative). Default is 1.0.

Thinking Level None Minimal Low Medium High

Initial Greeting

The first thing Gemini says when a call connects (after a 2-second delay). Leave empty to let the caller speak first.