diff --git a/models/spring-ai-anthropic/src/main/java/org/springframework/ai/anthropic/api/AnthropicApi.java b/models/spring-ai-anthropic/src/main/java/org/springframework/ai/anthropic/api/AnthropicApi.java
index 87098c6d938..c01bd702525 100644
--- a/models/spring-ai-anthropic/src/main/java/org/springframework/ai/anthropic/api/AnthropicApi.java
+++ b/models/spring-ai-anthropic/src/main/java/org/springframework/ai/anthropic/api/AnthropicApi.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2023-2024 the original author or authors.
+ * Copyright 2023-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -57,10 +57,15 @@
  * @author Thomas Vitale
  * @author Jihoon Kim
  * @author Alexandros Pappas
+ * @author Jonghoon Park
  * @since 1.0.0
  */
 public class AnthropicApi {
 
+	public static Builder builder() {
+		return new Builder();
+	}
+
 	public static final String PROVIDER_NAME = AiProvider.ANTHROPIC.value();
 
 	public static final String DEFAULT_BASE_URL = "https://api.anthropic.com";
@@ -89,6 +94,7 @@ public class AnthropicApi {
 	 * Create a new client api with DEFAULT_BASE_URL
 	 * @param anthropicApiKey Anthropic api Key.
 	 */
+	@Deprecated(since = "1.0.0.M7")
 	public AnthropicApi(String anthropicApiKey) {
 		this(DEFAULT_BASE_URL, anthropicApiKey);
 	}
@@ -98,6 +104,7 @@ public AnthropicApi(String anthropicApiKey) {
 	 * @param baseUrl api base URL.
 	 * @param anthropicApiKey Anthropic api Key.
 	 */
+	@Deprecated(since = "1.0.0.M7")
 	public AnthropicApi(String baseUrl, String anthropicApiKey) {
 		this(baseUrl, anthropicApiKey, DEFAULT_ANTHROPIC_VERSION, RestClient.builder(), WebClient.builder(),
 				RetryUtils.DEFAULT_RESPONSE_ERROR_HANDLER);
@@ -111,6 +118,7 @@ public AnthropicApi(String baseUrl, String anthropicApiKey) {
 	 * @param webClientBuilder WebClient builder.
 	 * @param responseErrorHandler Response error handler.
 	 */
+	@Deprecated(since = "1.0.0.M7")
 	public AnthropicApi(String baseUrl, String anthropicApiKey, String anthropicVersion,
 			RestClient.Builder restClientBuilder, WebClient.Builder webClientBuilder,
 			ResponseErrorHandler responseErrorHandler) {
@@ -1450,4 +1458,70 @@ public record PingEvent(
 	}
 	// @formatter:on
 
+	public static class Builder {
+
+		private String baseUrl = DEFAULT_BASE_URL;
+
+		private String apiKey;
+
+		private String anthropicVersion = DEFAULT_ANTHROPIC_VERSION;
+
+		private RestClient.Builder restClientBuilder = RestClient.builder();
+
+		private WebClient.Builder webClientBuilder = WebClient.builder();
+
+		private ResponseErrorHandler responseErrorHandler = RetryUtils.DEFAULT_RESPONSE_ERROR_HANDLER;
+
+		private String anthropicBetaFeatures = DEFAULT_ANTHROPIC_BETA_VERSION;
+
+		public Builder baseUrl(String baseUrl) {
+			Assert.hasText(baseUrl, "baseUrl cannot be null or empty");
+			this.baseUrl = baseUrl;
+			return this;
+		}
+
+		public Builder apiKey(String apiKey) {
+			Assert.notNull(apiKey, "apiKey cannot be null");
+			this.apiKey = apiKey;
+			return this;
+		}
+
+		public Builder anthropicVersion(String anthropicVersion) {
+			Assert.notNull(anthropicVersion, "anthropicVersion cannot be null");
+			this.anthropicVersion = anthropicVersion;
+			return this;
+		}
+
+		public Builder restClientBuilder(RestClient.Builder restClientBuilder) {
+			Assert.notNull(restClientBuilder, "restClientBuilder cannot be null");
+			this.restClientBuilder = restClientBuilder;
+			return this;
+		}
+
+		public Builder webClientBuilder(WebClient.Builder webClientBuilder) {
+			Assert.notNull(webClientBuilder, "webClientBuilder cannot be null");
+			this.webClientBuilder = webClientBuilder;
+			return this;
+		}
+
+		public Builder responseErrorHandler(ResponseErrorHandler responseErrorHandler) {
+			Assert.notNull(responseErrorHandler, "responseErrorHandler cannot be null");
+			this.responseErrorHandler = responseErrorHandler;
+			return this;
+		}
+
+		public Builder anthropicBetaFeatures(String anthropicBetaFeatures) {
+			Assert.notNull(anthropicBetaFeatures, "anthropicBetaFeatures cannot be null");
+			this.anthropicBetaFeatures = anthropicBetaFeatures;
+			return this;
+		}
+
+		public AnthropicApi build() {
+			Assert.notNull(this.apiKey, "apiKey must be set");
+			return new AnthropicApi(this.baseUrl, this.apiKey, this.anthropicVersion, this.restClientBuilder,
+					this.webClientBuilder, this.responseErrorHandler, this.anthropicBetaFeatures);
+		}
+
+	}
+
 }
diff --git a/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/AnthropicChatModelAdditionalHttpHeadersIT.java b/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/AnthropicChatModelAdditionalHttpHeadersIT.java
index 79742e733ab..dc76d7646cc 100644
--- a/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/AnthropicChatModelAdditionalHttpHeadersIT.java
+++ b/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/AnthropicChatModelAdditionalHttpHeadersIT.java
@@ -64,7 +64,7 @@ static class Config {
 
 		@Bean
 		public AnthropicApi anthropicApi() {
-			return new AnthropicApi("Invalid API Key");
+			return AnthropicApi.builder().apiKey("Invalid API Key").build();
 		}
 
 		@Bean
diff --git a/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/AnthropicChatModelIT.java b/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/AnthropicChatModelIT.java
index e629c3411ad..e404187f636 100644
--- a/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/AnthropicChatModelIT.java
+++ b/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/AnthropicChatModelIT.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2023-2024 the original author or authors.
+ * Copyright 2023-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -455,7 +455,7 @@ public static class Config {
 
 		@Bean
 		public AnthropicApi anthropicApi() {
-			return new AnthropicApi(getApiKey());
+			return AnthropicApi.builder().apiKey(getApiKey()).build();
 		}
 
 		private String getApiKey() {
diff --git a/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/AnthropicChatModelObservationIT.java b/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/AnthropicChatModelObservationIT.java
index 3db3961be86..910f572d208 100644
--- a/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/AnthropicChatModelObservationIT.java
+++ b/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/AnthropicChatModelObservationIT.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2023-2024 the original author or authors.
+ * Copyright 2023-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -164,7 +164,7 @@ public TestObservationRegistry observationRegistry() {
 
 		@Bean
 		public AnthropicApi anthropicApi() {
-			return new AnthropicApi(System.getenv("ANTHROPIC_API_KEY"));
+			return AnthropicApi.builder().apiKey(System.getenv("ANTHROPIC_API_KEY")).build();
 		}
 
 		@Bean
diff --git a/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/AnthropicTestConfiguration.java b/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/AnthropicTestConfiguration.java
index 62e5663cf53..221e33fea7a 100644
--- a/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/AnthropicTestConfiguration.java
+++ b/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/AnthropicTestConfiguration.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2023-2024 the original author or authors.
+ * Copyright 2023-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -26,7 +26,7 @@ public class AnthropicTestConfiguration {
 
 	@Bean
 	public AnthropicApi anthropicApi() {
-		return new AnthropicApi(getApiKey());
+		return AnthropicApi.builder().apiKey(getApiKey()).build();
 	}
 
 	private String getApiKey() {
diff --git a/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/ChatCompletionRequestTests.java b/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/ChatCompletionRequestTests.java
index 5c723fdff9f..53bb771319a 100644
--- a/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/ChatCompletionRequestTests.java
+++ b/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/ChatCompletionRequestTests.java
@@ -34,7 +34,7 @@ public class ChatCompletionRequestTests {
 	public void createRequestWithChatOptions() {
 
 		var client = AnthropicChatModel.builder()
-			.anthropicApi(new AnthropicApi("TEST"))
+			.anthropicApi(AnthropicApi.builder().apiKey("TEST").build())
 			.defaultOptions(AnthropicChatOptions.builder().model("DEFAULT_MODEL").temperature(66.6).build())
 			.build();
 
diff --git a/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/api/AnthropicApiIT.java b/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/api/AnthropicApiIT.java
index 7eb86034c75..efa5eda2b80 100644
--- a/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/api/AnthropicApiIT.java
+++ b/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/api/AnthropicApiIT.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2023-2024 the original author or authors.
+ * Copyright 2023-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -40,7 +40,7 @@
 @EnabledIfEnvironmentVariable(named = "ANTHROPIC_API_KEY", matches = ".+")
 public class AnthropicApiIT {
 
-	AnthropicApi anthropicApi = new AnthropicApi(System.getenv("ANTHROPIC_API_KEY"));
+	AnthropicApi anthropicApi = AnthropicApi.builder().apiKey(System.getenv("ANTHROPIC_API_KEY")).build();
 
 	@Test
 	void chatCompletionEntity() {
diff --git a/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/api/tool/AnthropicApiLegacyToolIT.java b/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/api/tool/AnthropicApiLegacyToolIT.java
index 0be31a1386d..4b32b9e8ee4 100644
--- a/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/api/tool/AnthropicApiLegacyToolIT.java
+++ b/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/api/tool/AnthropicApiLegacyToolIT.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2023-2024 the original author or authors.
+ * Copyright 2023-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -83,7 +83,7 @@ public class AnthropicApiLegacyToolIT {
 
 	private static final Logger logger = LoggerFactory.getLogger(AnthropicApiLegacyToolIT.class);
 
-	AnthropicApi anthropicApi = new AnthropicApi(System.getenv("ANTHROPIC_API_KEY"));
+	AnthropicApi anthropicApi = AnthropicApi.builder().apiKey(System.getenv("ANTHROPIC_API_KEY")).build();
 
 	@Test
 	void toolCalls() {
diff --git a/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/api/tool/AnthropicApiToolIT.java b/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/api/tool/AnthropicApiToolIT.java
index 6ac322220fd..d2f6d30f2ec 100644
--- a/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/api/tool/AnthropicApiToolIT.java
+++ b/models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/api/tool/AnthropicApiToolIT.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2023-2024 the original author or authors.
+ * Copyright 2023-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -58,7 +58,7 @@ public class AnthropicApiToolIT {
 
 	private static final Logger logger = LoggerFactory.getLogger(AnthropicApiToolIT.class);
 
-	AnthropicApi anthropicApi = new AnthropicApi(System.getenv("ANTHROPIC_API_KEY"));
+	AnthropicApi anthropicApi = AnthropicApi.builder().apiKey(System.getenv("ANTHROPIC_API_KEY")).build();
 
 	List<Tool> tools = List.of(new Tool("getCurrentWeather",
 			"Get the weather in location. Return temperature in 30°F or 30°C format.", ModelOptionsUtils.jsonToMap("""