o3-mini returns Unsupported parameter: 'temperature' is not supported with this model.

I have generated a small example project using spring-ai-starter-model-openai

The test class tries to make a call to OpenAI's o3-mini model:

@SpringBootTest
class SpringAITest
{
    @Autowired
    private OpenAiChatModel chatModel;

    @Test
    void testOpenAiChat()
    {
        Prompt prompt = new Prompt( List.of( new UserMessage( "Tell me about OpenAI" ) ),
                OpenAiChatOptions.builder().model( OpenAiApi.ChatModel.O3_MINI ).build() );

        chatModel.call( prompt ).getResult().getOutput().getText();
    }
} 

The result is:

org.springframework.ai.retry.NonTransientAiException: 400 - {
  "error": {
    "message": "Unsupported parameter: 'temperature' is not supported with this model.",
    "type": "invalid_request_error",
    "param": "temperature",
    "code": "unsupported_parameter"
  }
}

Looking at OpenAiChatModel, OpenAiChatModel.Builder.defaultOptions sets temperature to be 0.7

During the chatModel.call these are copied across.

From the documentation Autowiring OpenAiChatModel into the Spring Component looks to be the recommended approach.

Start at OpenAiChatModel.Builder.defaultOptions and trace how options are copied during chatModel.call for OpenAiApi.ChatModel.O3_MINI. Reproduce the shown SpringAITest case and inspect existing OpenAI model tests; done means an o3-mini call no longer receives the unsupported parameter and regression coverage captures the behavior.