diff --git a/models/spring-ai-azure-openai/src/main/java/org/springframework/ai/azure/openai/AzureOpenAiChatModel.java b/models/spring-ai-azure-openai/src/main/java/org/springframework/ai/azure/openai/AzureOpenAiChatModel.java
index 9ac782f6c65..a83181e9409 100644
--- a/models/spring-ai-azure-openai/src/main/java/org/springframework/ai/azure/openai/AzureOpenAiChatModel.java
+++ b/models/spring-ai-azure-openai/src/main/java/org/springframework/ai/azure/openai/AzureOpenAiChatModel.java
@@ -185,11 +185,7 @@ public Flux<ChatResponse> stream(Prompt prompt) {
 				}
 				return !isFunctionCall.get();
 			})
-			.concatMapIterable(window -> {
-				final var reduce = window.reduce(MergeUtils.emptyChatCompletions(), MergeUtils::mergeChatCompletions);
-				return List.of(reduce);
-			})
-			.flatMap(mono -> mono);
+			.flatMap(window -> window);
 		return accessibleChatCompletionsFlux
 			.switchMap(accessibleChatCompletions -> handleFunctionCallOrReturnStream(options,
 					Flux.just(accessibleChatCompletions)))