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telemetry: emit OTel span events for developer-role messages #5403

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longcw merged 1 commit into from
Apr 10, 2026
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telemetry: emit OTel span events for developer-role messages #5403

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5 changes: 5 additions & 0 deletions livekit-agents/livekit/agents/telemetry/traces.py
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Original file line number Diff line number Diff line change
Expand Up @@ -281,6 +281,11 @@ def __call__(self) -> dict[str, str]:
def _chat_ctx_to_otel_events(chat_ctx: ChatContext) -> list[tuple[str, Attributes]]:
role_to_event = {
"system": trace_types.EVENT_GEN_AI_SYSTEM_MESSAGE,
# OpenAI's `developer` role is the successor to `system` on the
# Chat Completions API and carries equivalent instructional content,
# so surface it as the system-message span event rather than dropping
# it on the floor.
"developer": trace_types.EVENT_GEN_AI_SYSTEM_MESSAGE,
"user": trace_types.EVENT_GEN_AI_USER_MESSAGE,
"assistant": trace_types.EVENT_GEN_AI_ASSISTANT_MESSAGE,
}
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