Update app.py

app.py

@@ -48,7 +48,7 @@ with gr.Blocks() as demo:
     #gr.HTML("You can also access the Streaming demo for OpenAI TTS by clicking this <a href='https://huggingface.co/spaces/ysharma/OpenAI_TTS_Streaming'>Gradio demo link</a>")
     with gr.Row(variant='panel'):
       api_key = gr.Textbox(type='password', label='OpenAI API Key', placeholder='Enter your API key to access the TTS demo')
-      model = gr.Dropdown(choices=['tts-1','tts-1-hd'], label='Model', value='tts-1')
+      model = gr.Dropdown(choices=['tts-1','tts-1-hd'], label='Model', value='tts-1-hd')
       voice = gr.Dropdown(choices=['alloy', 'echo', 'fable', 'onyx', 'nova', 'shimmer'], label='Voice Options', value='nova')
       url = gr.Textbox(label="URL", placeholder="Enter your URL and then click on the 'Text-To-Speech' button, or simply press the Enter key.", value='https://openkey.cloud/v1/audio/speech')
       #新增一个speed，数字滑块从0.25值4，默认是1