diff --git a/spring-ai-core/src/main/java/org/springframework/ai/chat/client/DefaultChatClient.java b/spring-ai-core/src/main/java/org/springframework/ai/chat/client/DefaultChatClient.java
index 767f6d26ae2..2f7736bffd5 100644
--- a/spring-ai-core/src/main/java/org/springframework/ai/chat/client/DefaultChatClient.java
+++ b/spring-ai-core/src/main/java/org/springframework/ai/chat/client/DefaultChatClient.java
@@ -59,10 +59,7 @@
 import org.springframework.ai.model.function.FunctionCallingOptions;
 import org.springframework.core.ParameterizedTypeReference;
 import org.springframework.core.io.Resource;
-import org.springframework.util.Assert;
-import org.springframework.util.CollectionUtils;
-import org.springframework.util.MimeType;
-import org.springframework.util.StringUtils;
+import org.springframework.util.*;
 
 import io.micrometer.observation.Observation;
 import io.micrometer.observation.ObservationRegistry;
@@ -279,6 +276,8 @@ public static class DefaultCallResponseSpec implements CallResponseSpec {
 
 		private final DefaultChatClientRequestSpec request;
 
+		private ChatResponse chatResponse;
+
 		public DefaultCallResponseSpec(DefaultChatClientRequestSpec request) {
 			this.request = request;
 		}
@@ -386,11 +385,15 @@ private ChatResponse doGetChatResponse(DefaultChatClientRequestSpec inputRequest
 		}
 
 		public ChatResponse chatResponse() {
-			return doGetChatResponse();
+			this.chatResponse = doGetChatResponse();
+			return this.chatResponse;
 		}
 
 		public String content() {
-			return doGetChatResponse().getResult().getOutput().getContent();
+			if (this.chatResponse == null) {
+				this.chatResponse = doGetChatResponse();
+			}
+			return this.chatResponse.getResult().getOutput().getContent();
 		}
 
 	}
@@ -439,6 +442,8 @@ public static class DefaultStreamResponseSpec implements StreamResponseSpec {
 
 		private final DefaultChatClientRequestSpec request;
 
+		private Flux<ChatResponse> chatResponse;
+
 		public DefaultStreamResponseSpec(DefaultChatClientRequestSpec request) {
 			this.request = request;
 		}
@@ -570,11 +575,15 @@ private Flux<ChatResponse> doGetFluxChatResponse(DefaultChatClientRequestSpec in
 		}
 
 		public Flux<ChatResponse> chatResponse() {
-			return doGetObservableFluxChatResponse(this.request);
+			this.chatResponse = doGetObservableFluxChatResponse(this.request);
+			return this.chatResponse;
 		}
 
 		public Flux<String> content() {
-			return doGetObservableFluxChatResponse(this.request).map(r -> {
+			if (this.chatResponse == null) {
+				this.chatResponse = doGetObservableFluxChatResponse(this.request);
+			}
+			return this.chatResponse.map(r -> {
 				if (r.getResult() == null || r.getResult().getOutput() == null
 						|| r.getResult().getOutput().getContent() == null) {
 					return "";
@@ -938,25 +947,35 @@ public static class DefaultCallPromptResponseSpec implements CallPromptResponseS
 
 		private final Prompt prompt;
 
+		private ChatResponse chatResponse;
+
 		public DefaultCallPromptResponseSpec(ChatModel chatModel, Prompt prompt) {
 			this.chatModel = chatModel;
 			this.prompt = prompt;
 		}
 
 		public String content() {
-			return doGetChatResponse(this.prompt).getResult().getOutput().getContent();
+			if (this.chatResponse == null) {
+				this.chatResponse = doGetChatResponse(this.prompt);
+			}
+			return this.chatResponse.getResult().getOutput().getContent();
 		}
 
 		public List<String> contents() {
-			return doGetChatResponse(this.prompt).getResults().stream().map(r -> r.getOutput().getContent()).toList();
+			if (this.chatResponse == null) {
+				this.chatResponse = doGetChatResponse(this.prompt);
+			}
+			return this.chatResponse.getResults().stream().map(r -> r.getOutput().getContent()).toList();
 		}
 
 		public ChatResponse chatResponse() {
-			return doGetChatResponse(this.prompt);
+			this.chatResponse = doGetChatResponse(this.prompt);
+			return this.chatResponse;
 		}
 
 		private ChatResponse doGetChatResponse(Prompt prompt) {
-			return chatModel.call(prompt);
+			this.chatResponse = chatModel.call(prompt);
+			return this.chatResponse;
 		}
 
 	}
@@ -967,21 +986,28 @@ public static class DefaultStreamPromptResponseSpec implements StreamPromptRespo
 
 		private final StreamingChatModel chatModel;
 
+		private Flux<ChatResponse> chatResponse;
+
 		public DefaultStreamPromptResponseSpec(StreamingChatModel streamingChatModel, Prompt prompt) {
 			this.chatModel = streamingChatModel;
 			this.prompt = prompt;
 		}
 
 		public Flux<ChatResponse> chatResponse() {
-			return doGetFluxChatResponse(this.prompt);
+			this.chatResponse = doGetFluxChatResponse(this.prompt);
+			return this.chatResponse;
 		}
 
 		private Flux<ChatResponse> doGetFluxChatResponse(Prompt prompt) {
-			return this.chatModel.stream(prompt);
+			this.chatResponse = this.chatModel.stream(prompt);
+			return this.chatResponse;
 		}
 
 		public Flux<String> content() {
-			return doGetFluxChatResponse(this.prompt).map(r -> {
+			if (this.chatResponse == null) {
+				this.chatResponse = doGetFluxChatResponse(this.prompt);
+			}
+			return this.chatResponse.map(r -> {
 				if (r.getResult() == null || r.getResult().getOutput() == null
 						|| r.getResult().getOutput().getContent() == null) {
 					return "";