small changes

app.py

@@ -7,18 +7,24 @@ import gradio as gr
 import koil
 
 
-from lm.lm.openai import openai
-from lm.log.arweaveditems import arweaveditems
+import lm.lm.openai
+import lm.log.arweaveditems
 
 OPENAI_API_KEY = os.getenv("OPENAI_API_KEY") 
 
+MODEL = lm.lm.openai.DEFAULT_MODEL
+
 async def apredict(input):
     timestamp = datetime.datetime.now().isoformat()
     try:
-        api = openai(api_key = OPENAI_API_KEY)
+        api = lm.lm.openai.openai(api_key = OPENAI_API_KEY, model = MODEL)
     except:
-        api = openai(api_key = OPENAI_API_KEY, model = 'gpt-4')
-    log = arweaveditems()
+        if model == lm.lm.openai.DEFAULT_MODEL:
+            model = 'gpt-4'
+            api = lm.lm.openai.openai(api_key = OPENAI_API_KEY, model = MODEL)
+        else:
+            raise
+    log = lm.lm.arweaveditems.arweaveditems()
     async with api, log:
         response = await api(input)
         addr = await log(