Traces have a very specific data model, and corresponding limitations, which don't really accommodate log events/messages of arbitrary size. The access model for traces is also fundamentally different vs. that of logs.
There are practical limitations mostly with backend analysis tools. OTel does not define a limit on how large a span is. It’s quite common in LLM Observability to capture full prompts and LLM responses as attributes on spans, for example.
There are practical limitations mostly with backend analysis tools. OTel does not define a limit on how large a span is. It’s quite common in LLM Observability to capture full prompts and LLM responses as attributes on spans, for example.