diff --git a/models/spring-ai-anthropic/src/main/java/org/springframework/ai/anthropic/AnthropicChatModel.java b/models/spring-ai-anthropic/src/main/java/org/springframework/ai/anthropic/AnthropicChatModel.java
index 2670b4a7fa8..05ece850a56 100644
--- a/models/spring-ai-anthropic/src/main/java/org/springframework/ai/anthropic/AnthropicChatModel.java
+++ b/models/spring-ai-anthropic/src/main/java/org/springframework/ai/anthropic/AnthropicChatModel.java
@@ -89,7 +89,7 @@ public class AnthropicChatModel extends AbstractToolCallSupport implements ChatM
 	/**
 	 * The lower-level API for the Anthropic service.
 	 */
-	public final AnthropicApi anthropicApi;
+	private final AnthropicApi anthropicApi;
 
 	/**
 	 * The default options used for the chat completion requests.