close OpenAI client

backend/image_generation.py

@@ -31,6 +31,7 @@ async def generate_image(prompt, api_key, base_url):
         "prompt": prompt,
     }
     res = await client.images.generate(**image_params)
+    await client.close()
     return res.data[0].url
 
 

backend/llm.py

@@ -30,4 +30,6 @@ async def stream_openai_response(
         full_response += content
         await callback(content)
 
+    await client.close()
+
     return full_response