Update app.js

app.js

@@ -28,19 +28,19 @@ const MODEL_MAPPING = {
         "provider": "openai",
         "mapping": "gpt-4-turbo-2024-04-09"
     },
-    "gemini-1.5-pro-exp-0801": {
+    "gemini-1.5-pro-exp-0827": {
         "provider": "google",
-        "mapping": "models/gemini-1.5-pro-exp-0801"
+        "mapping": "models/gemini-1.5-pro-exp-0827"
     },
-    "Meta-Llama-3.1-70B-Instruct-Turbo": {
-        "provider": "togetherai",
+    "llama-3.1-70b-instruct": {
+        "provider": "meta",
         "mapping": "meta.llama3-1-70b-instruct-v1:0"
     },
-    "Meta-Llama-3.1-405B-Instruct-Turbo": {
-        "provider": "togetherai",
+    "llama-3.1-405b-instruct": {
+        "provider": "meta",
         "mapping": "meta.llama3-1-405b-instruct-v1:0"
     },
-    "llama-3.1-sonar-large-128k-online": {
+    "perplexity": {
         "provider": "perplexity",
         "mapping": "llama-3.1-sonar-large-128k-online"
     },