diff --git a/models/spring-ai-openai/src/test/java/org/springframework/ai/openai/chat/OpenAiChatClientFluentIT.java b/models/spring-ai-openai/src/test/java/org/springframework/ai/openai/chat/OpenAiChatClientFluentIT.java
index 64656a0ab..a4b8f3d75 100644
--- a/models/spring-ai-openai/src/test/java/org/springframework/ai/openai/chat/OpenAiChatClientFluentIT.java
+++ b/models/spring-ai-openai/src/test/java/org/springframework/ai/openai/chat/OpenAiChatClientFluentIT.java
@@ -5,7 +5,6 @@ import org.junit.jupiter.api.condition.EnabledIfEnvironmentVariable;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.ai.chat.ChatClient;
-import org.springframework.ai.chat.FluentChatClient;
 import org.springframework.ai.chat.messages.Media;
 import org.springframework.ai.model.function.FunctionCallback;
 import org.springframework.ai.openai.OpenAiTestConfiguration;
@@ -26,11 +25,12 @@ public class OpenAiChatClientFluentIT {
 
 	@Test
 	void simpleTest() {
-		var liquidChatClient = new FluentChatClient.LiquidChatClient(this.chatClient);
-		var actors = liquidChatClient
-			.chat(s -> s.system(sys -> sys.text("""
-					You're a non user hostile chatbot from cyberdyne systems.
-					 your primary objective is {primaryObjective}""").params(Map.of("primaryObjective", "No PHP")))
+
+		var systemText = """
+				You're a non user hostile chatbot from cyberdyne systems.
+				your primary objective is {primaryObjective}""";
+		var actors = this.chatClient
+			.chat(s -> s.system(sys -> sys.text(systemText).params(Map.of("primaryObjective", "No PHP")))
 				.functions(fn -> fn.functions((FunctionCallback) null)
 					.functions("createReservation", "cancelReservations"))
 				.user(user -> user.text("tell me a joke about {topic}")
diff --git a/spring-ai-core/src/main/java/org/springframework/ai/chat/ChatClient.java b/spring-ai-core/src/main/java/org/springframework/ai/chat/ChatClient.java
index 3ba4b1e63..34773f50b 100644
--- a/spring-ai-core/src/main/java/org/springframework/ai/chat/ChatClient.java
+++ b/spring-ai-core/src/main/java/org/springframework/ai/chat/ChatClient.java
@@ -15,17 +15,15 @@
  */
 package org.springframework.ai.chat;
 
-import org.springframework.ai.chat.messages.Media;
+import org.springframework.ai.chat.dsl.ChatClientDsl;
 import org.springframework.ai.chat.prompt.Prompt;
 
 import java.util.Arrays;
-import java.util.List;
-import java.util.Map;
+import java.util.function.Consumer;
 
 import org.springframework.ai.chat.messages.Message;
 import org.springframework.ai.chat.messages.UserMessage;
 import org.springframework.ai.model.ModelClient;
-import org.springframework.util.MimeType;
 
 public interface ChatClient extends ModelClient<Prompt, ChatResponse> {
 
@@ -35,6 +33,18 @@ public interface ChatClient extends ModelClient<Prompt, ChatResponse> {
 		return (generation != null) ? generation.getOutput().getContent() : "";
 	}
 
+	/**
+	 * Calls the chat API with a variable number of messages.
+	 *
+	 * <p>
+	 * This method is deprecated since version 1.0.0 M1 and is intended to be removed in
+	 * future versions. Use the {@link #chat(Consumer< ChatClientDsl.ChatBuilderSpec>
+	 * chatSpec)} method instead.
+	 * @param messages The messages to send to the chat API. Each message should implement
+	 * the {@link Message} interface.
+	 * @return The content of the output message generated by the AI.
+	 */
+	@Deprecated(since = "1.0.0 M1", forRemoval = true)
 	default String call(Message... messages) {
 		Prompt prompt = new Prompt(Arrays.asList(messages));
 		Generation generation = call(prompt).getResult();
@@ -44,4 +54,8 @@ public interface ChatClient extends ModelClient<Prompt, ChatResponse> {
 	@Override
 	ChatResponse call(Prompt prompt);
 
+	default ChatClientDsl.ChatCallSpec chat(Consumer<ChatClientDsl.ChatBuilderSpec> chatSpec) {
+		return null;
+	}
+
 }
diff --git a/spring-ai-core/src/main/java/org/springframework/ai/chat/FluentChatClient.java b/spring-ai-core/src/main/java/org/springframework/ai/chat/dsl/ChatClientDsl.java
similarity index 84%
rename from spring-ai-core/src/main/java/org/springframework/ai/chat/FluentChatClient.java
rename to spring-ai-core/src/main/java/org/springframework/ai/chat/dsl/ChatClientDsl.java
index 343b289f2..5fd9675c3 100644
--- a/spring-ai-core/src/main/java/org/springframework/ai/chat/FluentChatClient.java
+++ b/spring-ai-core/src/main/java/org/springframework/ai/chat/dsl/ChatClientDsl.java
@@ -1,10 +1,10 @@
-package org.springframework.ai.chat;
+package org.springframework.ai.chat.dsl;
 
+import org.springframework.ai.chat.ChatResponse;
 import org.springframework.ai.chat.messages.Media;
 import org.springframework.ai.model.function.FunctionCallback;
 import org.springframework.core.ParameterizedTypeReference;
 import org.springframework.core.io.Resource;
-import org.springframework.util.MimeType;
 
 import java.util.*;
 import java.util.function.Consumer;
@@ -12,13 +12,7 @@ import java.util.function.Consumer;
 /**
  * @author Josh Long
  */
-public class FluentChatClient {
-
-	private final ChatClient chatClient;
-
-	public FluentChatClient(ChatClient chatClient) {
-		this.chatClient = chatClient;
-	}
+public abstract class ChatClientDsl {
 
 	public static class AbstractSystemMessageBuilder {
 
@@ -29,6 +23,11 @@ public class FluentChatClient {
 			return this;
 		}
 
+		public AbstractSystemMessageBuilder param(String key, Object value) {
+			this.paramsMap.put(key, value);
+			return this;
+		}
+
 	}
 
 	public static class AbstractUserMessageBuilder {
@@ -141,7 +140,7 @@ public class FluentChatClient {
 
 	}
 
-	public static class LiquidChatCallSpec {
+	public static class ChatCallSpec {
 
 		public <T> T call(Class<T> tClass) {
 			return null;
@@ -157,19 +156,4 @@ public class FluentChatClient {
 
 	}
 
-	public static class LiquidChatClient {
-
-		private final ChatClient chatClient;
-
-		public LiquidChatClient(ChatClient chatClient) {
-			this.chatClient = chatClient;
-		}
-
-		// put this in ChatClient
-		public LiquidChatCallSpec chat(Consumer<ChatBuilderSpec> chatSpec) {
-			return null;
-		}
-
-	}
-
 }
\ No newline at end of file