diff --git a/plugins/nf-gpt/src/main/nextflow/gpt/prompt/GptPromptExtension.groovy b/plugins/nf-gpt/src/main/nextflow/gpt/prompt/GptPromptExtension.groovy
index a884f0f..c2a44d8 100644
--- a/plugins/nf-gpt/src/main/nextflow/gpt/prompt/GptPromptExtension.groovy
+++ b/plugins/nf-gpt/src/main/nextflow/gpt/prompt/GptPromptExtension.groovy
@@ -61,6 +61,8 @@ class GptPromptExtension extends PluginExtensionPoint {
         final ai = new GptPromptModel(session)
             .withModel(opts.model as String)
             .withDebug(opts.debug as Boolean)
+            .withTemperature(opts.temperature as Double)
+            .withMaxToken(opts.maxTokens as Integer)
             .build()
         // run the prompt
         final response = ai.prompt(query, opts.schema as Map)
@@ -84,6 +86,8 @@ class GptPromptExtension extends PluginExtensionPoint {
         final ai = new GptPromptModel(session)
                 .withModel(opts.model as String)
                 .withDebug(opts.debug as Boolean)
+                .withTemperature(opts.temperature as Double)
+                .withMaxToken(opts.maxTokens as Integer)
                 .build()
 
         final target = CH.createBy(source)
diff --git a/plugins/nf-gpt/src/main/nextflow/gpt/prompt/GptPromptModel.groovy b/plugins/nf-gpt/src/main/nextflow/gpt/prompt/GptPromptModel.groovy
index 7872c77..265d8c0 100644
--- a/plugins/nf-gpt/src/main/nextflow/gpt/prompt/GptPromptModel.groovy
+++ b/plugins/nf-gpt/src/main/nextflow/gpt/prompt/GptPromptModel.groovy
@@ -70,16 +70,16 @@ class GptPromptModel {
 
     GptPromptModel build() {
         final modelName = model ?: config.model()
-        final temp = temperature ?: config.temperature()
+        final temperature = this.temperature ?: config.temperature()
         final tokens = maxTokens ?: config.maxTokens()
-        log.debug "Creating OpenAI chat model: $modelName; api-key: ${StringUtils.redact(config.apiKey())}; temperature: $temp; maxTokens: ${maxTokens}"
+        log.debug "Creating OpenAI chat model: $modelName; api-key: ${StringUtils.redact(config.apiKey())}; temperature: $temperature; maxTokens: ${maxTokens}"
         client = OpenAiChatModel.builder()
             .apiKey(config.apiKey())
             .modelName(modelName)
             .logRequests(debug)
             .logResponses(debug)
             .temperature(temperature)
-            .maxTokens(maxTokens)
+            .maxTokens(tokens)
             .responseFormat("json_object")
             .build();
         return this