LLMModelUsage

,

TTSModelUsage

,

STTModelUsage

on which event does these usage class emitted

Thanks for reaching out, Jura. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.

MetricsCollected

is deprecating

Thanks — I’m following up on your note that

MetricsCollected

is deprecating and your earlier question about which event emits

LLMModelUsage

,

TTSModelUsage

, and

STTModelUsage

. Quick summary of what I can confirm: • Those usage classes were included in the

MetricsCollected

payload (

MetricsCollectedEvent

) and emitted during an AgentSession’s Running phase after model inference. • I do not have a confirmed replacement event or an official migration path in the sources I can access. To help you effectively, could you tell me one or both of the following: • Where you saw the deprecation notice (SDK/CLI output, a documentation page, or a compiler/runtime warning)? If it’s a docs page, a link or the exact wording would help. • Which SDK and version are you using (Node.js or Python, and the package version)? With that info I can: • Check whether a replacement event or new pattern is available for reporting

LLMModelUsage

,

TTSModelUsage

, and

STTModelUsage

. • Suggest a short-term workaround (for example, capturing usage directly at the model-call sites) if

MetricsCollected

is removed and no direct replacement exists. • Provide a code snippet for your SDK to help collect usage until we identify the new pattern. Which SDK/version and where you saw the deprecation message? Sources: LLM Metrics | LiveKit Documentation | STT Metrics | LiveKit Documentation | TTS Metrics | LiveKit Documentation | Build a multilingual voice agent that automatically switches languages | Li... | Agents (Python) | livekit/livekit_composite | DeepWiki, with interactive elements