Compatibility issue: GPT-5 + Azure AI Search tools unsupported (error “unsupported_model …”)

[fmyilmaz]

Hi team,

I’m running into an issue where the model gpt-5 of Azure OpenAI is not compatible with the azure_ai_search tool in our agent setup. I followed our usual pattern:

client.agents.create_agent(model="gpt-5", tools=[azure_ai_search_tool])

But I’m getting this error:

(unsupported_model) The model 'gpt-5' cannot be used with the following tools: azure_ai_search. This model only supports Responses API compatible tools.

Why this happens
It looks like while GPT-5 is available via Azure OpenAI, it currently does not support tool bindings like azure_ai_search, bing_search, etc. (i.e., retrieval-augmented generation via those tools). So our hybrid approach (using GPT-5 + search tool) fails.

Questions / for discussion

• Has anyone seen a roadmap or ETA from Azure for when GPT-5 will support tool integrations like azure_ai_search?

Thanks for any input or suggestions!
Melih