diff --git a/python/semantic_kernel/connectors/ai/onnx/services/onnx_gen_ai_completion_base.py b/python/semantic_kernel/connectors/ai/onnx/services/onnx_gen_ai_completion_base.py
index c7e2c47d12d4..40ce552ed88b 100644
--- a/python/semantic_kernel/connectors/ai/onnx/services/onnx_gen_ai_completion_base.py
+++ b/python/semantic_kernel/connectors/ai/onnx/services/onnx_gen_ai_completion_base.py
@@ -53,23 +53,6 @@ def __init__(self, ai_model_path: str, **kwargs) -> None:
             **kwargs,
         )
 
-    def _prepare_input_params(
-        self, prompt: str, settings: OnnxGenAIPromptExecutionSettings, image: ImageContent | None = None
-    ) -> Any:
-        params = OnnxRuntimeGenAi.GeneratorParams(self.model)
-        params.set_search_options(**settings.prepare_settings_dict())
-        if not self.enable_multi_modality:
-            input_tokens = self.tokenizer.encode(prompt)
-            params.input_ids = input_tokens
-        else:
-            if image is not None:
-                # With the use of Pybind there is currently no way to load images from bytes
-                # We can only open images from a file path currently
-                image = OnnxRuntimeGenAi.Images.open(str(image.uri))
-            input_tokens = self.tokenizer(prompt, images=image)
-            params.set_inputs(input_tokens)
-        return params
-
     async def _generate_next_token_async(
         self,
         prompt: str,
@@ -77,7 +60,18 @@ async def _generate_next_token_async(
         image: ImageContent | None = None,
     ) -> AsyncGenerator[list[str], Any]:
         try:
-            params = self._prepare_input_params(prompt, settings, image)
+            params = OnnxRuntimeGenAi.GeneratorParams(self.model)
+            params.set_search_options(**settings.prepare_settings_dict())
+            if not self.enable_multi_modality:
+                input_tokens = self.tokenizer.encode(prompt)
+                params.input_ids = input_tokens
+            else:
+                if image is not None:
+                    # With the use of Pybind there is currently no way to load images from bytes
+                    # We can only open images from a file path currently
+                    image = OnnxRuntimeGenAi.Images.open(str(image.uri))
+                input_tokens = self.tokenizer(prompt, images=image)
+                params.set_inputs(input_tokens)
             generator = OnnxRuntimeGenAi.Generator(self.model, params)
 
             while not generator.is_done():