Python: Bug: Python & .Net Response API based Agent doesn't have a Service to register it to AgentGroupChat / GroupChat

[ian-t-adams]

Describe the bug
There is a responses agent in semantic_kernel.agents but I not an equivalent to AzureChatCompletion in semantic_kernel.connectors.ai.open_ai. This means I can't create a service for the Kernel, so are response based agents are only possible as isolated agents. A corresponding connectors.ai.open_ai is required to register them to work within a GroupChat / AgentGroupChat.

To Reproduce
Steps to reproduce the behavior:

1. In Python or .Net create an AzureResponseAgent https://learn.microsoft.com/en-us/python/api/semantic-kernel/semantic_kernel.agents.open_ai.azure_responses_agent.azureresponsesagent?view=semantic-kernel-python
2. Attempt to register the AzureResponseAgent with the corresponding Service but it's not available https://learn.microsoft.com/en-us/python/api/semantic-kernel/semantic_kernel.connectors.ai.open_ai.services?view=semantic-kernel-python
3. Error: Cannot add the newly created AzureResponseAgent to an AgentGroupChat or GroupChat Kernel.

Expected behavior
The ability to use an AzureResponseAgent in either the AgentGroupChat or GroupChat objects,

Screenshots
If applicable, add screenshots to help explain your problem.

Platform

• Language: C#, Python
• Source: https://www.nuget.org/packages/Microsoft.SemanticKernel/, https://pypi.org/project/semantic-kernel/ pip version 1.33.0
• AI model: GPT-4.1, GPT-4.1-mini
• IDE: VS Code / All
• OS: Windows and Mac

Additional context
Responses API handles truncation issues better and a AzureResponseAgent is required to utilize the responses api.

[markwallace-microsoft]

@ian-t-adams This omission is intentional. We have introduced new multi-agent orchestration patterns, see: https://learn.microsoft.com/en-us/semantic-kernel/frameworks/agent/agent-orchestration/?pivots=programming-language-csharp. This is one of the first steps in our convergence with AutoGen.

Our plan is to phase out the current experimental agent orchestration support in favour of this new pattern.

[moonbox3]

@ian-t-adams for Python, please have a look at the following orchestration patterns: https://github.com/microsoft/semantic-kernel/tree/main/python/samples/getting_started_with_agents/multi_agent_orchestration. This is what Mark called out.

There's no further work here on this issue. I will close it. If you experience an issue using the new orchestration patterns, please file a new issue. Thank you.