added cost calculation

app.ipynb

@@ -237,6 +237,23 @@
     "    return len(input_text)"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "0523a158-ee07-48b3-9350-ee39d4deee7f",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "#| export\n",
+    "def get_generation_cost(input_text, tts_model_dropdown):\n",
+    "    text_len = len(input_text)\n",
+    "    if tts_model_dropdown.endswith('-hd'):\n",
+    "        cost = text_len/1000 * 0.03\n",
+    "    else:\n",
+    "        cost = text_len/1000 * 0.015\n",
+    "    return \"${:,.3f}\".format(cost)"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -254,8 +271,11 @@
     "        tts_model_dropdown = gr.Dropdown(value='tts-1',choices=tts_models, label='Model')\n",
     "        tts_voice_dropdown = gr.Dropdown(value='alloy',choices=tts_voices,label='Voice')\n",
     "        input_text_length = gr.Label(label=\"Number of characters\")\n",
+    "        generation_cost = gr.Label(label=\"Generation cost\")\n",
     "        output_audio = gr.Audio()\n",
     "    input_text.input(fn=get_input_text_len, inputs=input_text, outputs=input_text_length)\n",
+    "    input_text.input(fn=get_generation_cost, inputs=[input_text,tts_model_dropdown], outputs=generation_cost)\n",
+    "    tts_model_dropdown.input(fn=get_generation_cost, inputs=[input_text,tts_model_dropdown], outputs=generation_cost)\n",
     "    go_btn = gr.Button(\"Go\")\n",
     "    go_btn.click(fn=create_speech, inputs=[input_text, tts_model_dropdown, tts_voice_dropdown], outputs=[output_audio])\n",
     "    clear_btn = gr.Button('Clear')\n",

app.py

@@ -2,7 +2,7 @@
 
 # %% auto 0
 __all__ = ['secret_import_failed', 'tts_voices', 'launch_kwargs', 'split_text', 'concatenate_mp3', 'create_speech',
-           'get_input_text_len']
+           'get_input_text_len', 'get_generation_cost']
 
 # %% app.ipynb 1
 #tts_openai_secrets.py content:
@@ -155,6 +155,15 @@ def get_input_text_len(input_text):
     return len(input_text)
 
 # %% app.ipynb 10
+def get_generation_cost(input_text, tts_model_dropdown):
+    text_len = len(input_text)
+    if tts_model_dropdown.endswith('-hd'):
+        cost = text_len/1000 * 0.03
+    else:
+        cost = text_len/1000 * 0.015
+    return "${:,.3f}".format(cost)
+
+# %% app.ipynb 11
 with gr.Blocks(title='OpenAI TTS', head='OpenAI TTS') as app:
     gr.Markdown("# OpenAI TTS")
     gr.Markdown("Start typing below and then click **Go** to create the speech from your text. The current limit is 4,000 characters.")
@@ -164,19 +173,22 @@ with gr.Blocks(title='OpenAI TTS', head='OpenAI TTS') as app:
         tts_model_dropdown = gr.Dropdown(value='tts-1',choices=tts_models, label='Model')
         tts_voice_dropdown = gr.Dropdown(value='alloy',choices=tts_voices,label='Voice')
         input_text_length = gr.Label(label="Number of characters")
+        generation_cost = gr.Label(label="Generation cost")
         output_audio = gr.Audio()
     input_text.input(fn=get_input_text_len, inputs=input_text, outputs=input_text_length)
+    input_text.input(fn=get_generation_cost, inputs=[input_text,tts_model_dropdown], outputs=generation_cost)
+    tts_model_dropdown.input(fn=get_generation_cost, inputs=[input_text,tts_model_dropdown], outputs=generation_cost)
     go_btn = gr.Button("Go")
     go_btn.click(fn=create_speech, inputs=[input_text, tts_model_dropdown, tts_voice_dropdown], outputs=[output_audio])
     clear_btn = gr.Button('Clear')
     clear_btn.click(fn=lambda: '', outputs=input_text)
     
 
-# %% app.ipynb 11
+# %% app.ipynb 12
 launch_kwargs = {'auth':('username',GRADIO_PASSWORD),
                  'auth_message':'Please log in to Mat\'s TTS App with username: username and password.'}
 
-# %% app.ipynb 13
+# %% app.ipynb 14
 #.py launch
 if __name__ == "__main__":
     app.launch(**launch_kwargs)