Tasks are not working with openai gpt-realtime model

[kostyazgara]

Bug Description

I'm trying to use tasks and tasks groups with gpt-realtime model. In my application when tasks are running they just stuck and I can't event shut down the script.

Expected Behavior

Tasks and tasks group are executing normally without exceptions and freezing

Reproduction Steps

I tried to reproduce the error in one of agents examples. I reproduced the issue in my repository using one of livekit examples https://github.com/kostyazgara/doheny-surf-desk-realtime-issue. The only thing that I changed it's replaced stt and tts with `llm=openai.realtime.RealtimeModel(voice="alloy"),`. You can clone the repository, run `uv run agent.py console` and try to book a lesson to see that tasks are not working.

Operating System

MacOS

Models Used

gpt-realtime

Package Versions

"livekit-agents>=1.3.2",
"livekit-plugins-openai>=1.3.2",
"livekit-plugins-silero>=1.3.2",
"livekit-plugins-turn-detector>=1.3.2",
"livekit-plugins-noise-cancellation~=0.2.5",

Session/Room/Call IDs

No response

Proposed Solution

Additional Context

No response

Screenshots and Recordings

No response

[chenghao-mou]

If you could provide a one-file example to reproduce the issue, that would be great. For example, do you run into the same issue if you use a realtime model in examples/voice_agents/email_example.py?

[kostyazgara]

Hmm, simple example works. Just updated my repo with email_example.py script https://github.com/kostyazgara/doheny-surf-desk-realtime-issue/blob/main/email_example.py and using gpt-realtime model. But I don't quite understand what's the difference between agent.py and email_example.py scripts in my example repo? agent.py is obviously more complex using handoffs and more tools, but environment is equal, cuz I inserted example email script directly in existing project with the same lock dependencies. Could you help me to figure out where I might be wrong? Thanks!

[chenghao-mou]

One thing that might cause this is having handoff/agent task during on_enter: #4109