LLM observability tools are blind to the voice layer. Here is what I checked 6 of them for.

Tracing the LLM call is the easy 20 percent. For a voice agent, the failures live in the audio layer your tracer never sees. Most LLM observability tools trace the same thing: the prompt, the completion, the tokens, the latency of the model call.

Source: [Dev.to](https://dev.to/realmarcuschen/llm-observability-tools-are-blind-to-the-voice-layer-here-is-what-i-checked-6-of-them-for-3p4o)