Does AI Agent Service route model inference calls through AI Gateway (APIM)?

[aviah-bm]

I have an Azure AI Foundry setup with AI Gateway (Azure API Management) enabled on my project. I'm trying to understand whether the AI Agent Service routes its internal model inference calls through the AI Gateway.

My setup:

• Foundry resource with AI Gateway (APIM) enabled on the project
• AI Gateway status shows "Enabled" in the Admin console > AI Gateway tab
• Model deployment: gpt-4.1-mini

What I'm observing:

• Direct model calls (Completions API) — When I call gpt-4.1-mini directly via the Completions API, I can see the request appearing in APIM logs and metrics. This works as expected.
• Agent calls — When I invoke my agent via the Agent Service endpoint (services.ai.azure.com), the agent responds correctly, but I do NOT see any corresponding model inference request in APIM logs. The agent's internal LLM calls appear to bypass APIM entirely.

My questions:

1. When AI Gateway is enabled on a project, does the Agent Service route its internal model inference calls (the LLM calls the agent makes to "think" and reason) through the APIM gateway? Or does the Agent Service have a direct connection to the model that bypasses APIM?
2. If agents currently bypass APIM for model inference, is there a way to configure the Agent Service to route ALL model inference calls through the AI Gateway? For example, through the "Bring your own AI gateway" preview feature or a specific connection configuration?

Environment:
Region: eastus
APIM SKU: Standard V2
AI Gateway configured via Foundry Admin console > AI Gateway tab

Thanks!!