Python: OpenTelemetry span missing after upgrading to Semantic Kernel 1.7 (Google IChatClient)

[rogerbarreto]

Description

After upgrading to Semantic Kernel 1.7.x and using the official Google IChatClient, OpenTelemetry traces no longer include the chat completion / chat generation span.
Chat completions execute correctly at runtime, but the corresponding telemetry span is missing.

This appears to be a regression introduced in SK 1.7, as chat generation telemetry was emitted correctly in earlier versions.

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Expected behavior

OpenTelemetry traces include a span for:

• Chat completion / chat generation

Other telemetry previously emitted remains unchanged.

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Actual behavior

• Chat completions function correctly
• Tool invocation telemetry is present
• Agent output / workflow telemetry is present
• Chat completion (chat generation) span is missing from traces

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Environment

• Semantic Kernel version: 1.7.x
• Chat client: Google official IChatClient
• Telemetry: OpenTelemetry enabled
• Language: .NET (can confirm Python if relevant)

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Additional context

• Discussed during AutoGen & Semantic Kernel Office Hours
• Issue appears specific to the Google IChatClient path
• Likely related to missing or changed instrumentation / adapter wrapping for chat completion spans in SK 1.7
• No special OpenTelemetry configuration changes were made during the upgrade
• No known workaround at this time

[jliu-mycarrier]

@rogerbarreto , basically, once we move to 1.7 and using the new extension (AddGoogleGenAIChatClient), we lost "Generation" type from OpenTelemtry .

as you can see in the image (2nd column is traceId), usually type "Agent" will follow a "Generation", but not anymore

[jliu-mycarrier]

Since, It's using Microsoft.Extensions.AI OpenTelemtry now. I think I need to add "Experimental.Microsoft.Extensions.AI" to the sources?

[jliu-mycarrier]

This can be closed, we didn't setup the correct source name once we move to IChatClient from
Microsoft.extensions.ai

[rogerbarreto]

@jliu-mycarrier Thanks for the added context, closing it.