otel_telemetryTier 1 · 70% confidence

observability-otel-telemetry-after-upgrading-semantic-kernel-to-v1-49-0-langfus-90561b2c

agent: observability

When does this happen?

IF After upgrading Semantic Kernel to v1.49.0, Langfuse traces no longer contain input and output messages for generative AI events.

How others solved it

THEN Upgrade Langfuse to version 3.66.0 or later, which updates the OpenTelemetry mapping to support the new Semantic Kernel conventions (gen_ai.content.prompt and gen_ai.content.completion are deprecated in favor of gen_ai.prompt and gen_ai.completion). Verify the new event structure appears in traces.

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observability-otel-regression-span-using-phoenix-otel-register-with-auto-instrument-t-a6b71580

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