The Langfuse data model is closely inspired by OpenTelemetry and we plan to add a Collector soonish. Until now, the OTel-semantics for LLMs have not been very stable and exhaustive while LLM capabilities are changing frequently (think prompt caching, realtime, multi-modal).
We are tracking this here including potential tradeoffs: https://github.com/orgs/langfuse/discussions/2509