Azure AI Agent Service projects are created and managed in Azure AI Foundry (ai.azure.com). Foundry provides the “project” workspace where you configure agents, connect tools (like speech and search), and use your Azure OpenAI deployments. Language Studio and Speech Studio are for the classic Language and Speech services respectively, and the Azure portal is used to create resources—not the agent project itself. The Microsoft docs explicitly state you start by creating an Azure AI Foundry project to build agents.

References

What is Azure AI Foundry Agent Service? – “To get started… create an Azure AI Foundry project.” Microsoft Learn

Create a project in Azure AI Foundry (projects organize agents, files, evaluations). Microsoft Learn

Quickstart: Create an agent in Azure AI Foundry Agent Service. Microsoft Learn