# Usage Summary for realtime xai and Ultravox models

**URL:** <https://community.livekit.io/t/usage-summary-for-realtime-xai-and-ultravox-models/1170>\
**Category:** Agents\
**Tags:** realtime\
**Created:** [May 19, 2026, 9:55am UTC](https://community.livekit.io/t/usage-summary-for-realtime-xai-and-ultravox-models/1170 "2026-05-19T09:55:15Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Harshita\_Sukumar\_Patil](https://sea1.discourse-cdn.com/flex001/user_avatar/community.livekit.io/harshita_sukumar_patil/32/351_2.png) [@Harshita\_Sukumar\_Patil](https://community.livekit.io/u/Harshita_Sukumar_Patil)\
**Post date:** [May 19, 2026, 9:55am UTC](https://community.livekit.io/t/usage-summary-for-realtime-xai-and-ultravox-models/1170/1 "2026-05-19T09:55:15Z")

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@livekitteams @LiveKit-Community  
I’m trying to track real-time resource consumption in my LiveKit Agent app. When using Google or Azure, `session.usage.model_usage` provides a full breakdown of input/output tokens.

However, for **xAI** and **Ultravox** , the payload returns virtually empty metadata with no actual usage numbers

example:  
Output: [LLMModelUsage(type=‘llm\_usage’, provider=‘Ultravox’, model=‘fixie-ai/ultravox’)]

The specific metrics (like `prompt_tokens` or `completion_tokens`) are completely missing, unlike other models.  
Is there a recommended workaround for this?

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**Author:** ![CWilson](https://sea1.discourse-cdn.com/flex001/user_avatar/community.livekit.io/cwilson/32/135_2.png) [@CWilson](https://community.livekit.io/u/CWilson)\
**Post date:** [May 19, 2026, 12:30pm UTC](https://community.livekit.io/t/usage-summary-for-realtime-xai-and-ultravox-models/1170/2 "2026-05-19T12:30:48Z")

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Those usage metrics are passed from the model providers. Unfortunately, Ultravox does not provide that information on their transport. So this is a question for their forum. If they add it, we would love to pass those value along to you:

> <https://github.com/livekit/agents/blob/main/livekit-plugins/livekit-plugins-ultravox/livekit/plugins/ultravox/realtime/realtime_model.py#L1000>