My real environment is audio-to-audio with gemini 3.1 flash live model with multi turn conversation. I want to use promptfoo to simulate the conversation (

promptfoo:simulated-user

). 1. Is it possible to let

promptfoo:simulated-user

to do an audio-to-audio conversation with

gooogle:live:gemini-3.1-flash-live-preview

and run assert to validate the quality? 2. If not, do you know if using

response_modalities: ['text']

yields similar output? If output will be similar, i'm okay using text modality **Update**: I can't connect to

gooogle:live:gemini-3.1-flash-live-preview

at all even with

promptfoo init --example google-live-audio

. - In text modality, I get

WebSocket connection closed unexpectedly. Code: 1011, Reason: Internal error encountered.

. - In audio modality, I get

[ERROR] WebSocket request timed out

(

google:live:gemini-2.5-flash-native-audio-preview-12-2025

works fine)