diff --git a/models/spring-ai-openai/src/main/java/org/springframework/ai/openai/OpenAiAudioSpeechClient.java b/models/spring-ai-openai/src/main/java/org/springframework/ai/openai/OpenAiAudioSpeechClient.java
index 864656875..fc4575440 100644
--- a/models/spring-ai-openai/src/main/java/org/springframework/ai/openai/OpenAiAudioSpeechClient.java
+++ b/models/spring-ai-openai/src/main/java/org/springframework/ai/openai/OpenAiAudioSpeechClient.java
@@ -133,7 +133,7 @@ public class OpenAiAudioSpeechClient implements SpeechClient, StreamingSpeechCli
 
 		if (request.getOptions() != null) {
 			if (request.getOptions() instanceof OpenAiAudioSpeechOptions runtimeOptions) {
-				options = this.merge(options, runtimeOptions);
+				options = this.merge(runtimeOptions, options);
 			}
 			else {
 				throw new IllegalArgumentException("Prompt options are not of type SpeechOptions: "
diff --git a/models/spring-ai-openai/src/main/java/org/springframework/ai/openai/OpenAiAudioTranscriptionClient.java b/models/spring-ai-openai/src/main/java/org/springframework/ai/openai/OpenAiAudioTranscriptionClient.java
index b99c7cca6..e021571e0 100644
--- a/models/spring-ai-openai/src/main/java/org/springframework/ai/openai/OpenAiAudioTranscriptionClient.java
+++ b/models/spring-ai-openai/src/main/java/org/springframework/ai/openai/OpenAiAudioTranscriptionClient.java
@@ -178,7 +178,7 @@ public class OpenAiAudioTranscriptionClient
 
 		if (request.getOptions() != null) {
 			if (request.getOptions() instanceof OpenAiAudioTranscriptionOptions runtimeOptions) {
-				options = this.merge(options, runtimeOptions);
+				options = this.merge(runtimeOptions, options);
 			}
 			else {
 				throw new IllegalArgumentException("Prompt options are not of type TranscriptionOptions: "