diff --git a/app.py b/app.py
index 727704f..e5bd87d 100644
--- a/app.py
+++ b/app.py
@@ -38,7 +38,6 @@
 import razorpay
 from razorpay.resources.subscription import Subscription
 from razorpay.resources.customer import Customer
-from razorpay.resources.plan import Plan
 from razorpay.resources.order import Order
 import tiktoken
 from anthropic import Anthropic
@@ -164,13 +163,6 @@ class PaymentRequest(BaseModel):
         "input_token_cost_per_million": 10.0,
         "output_token_cost_per_million": 30.0
     },
-    "gpt-4": {
-        "model": ChatOpenAI,
-        "premium": True,
-        "company": "OpenAI",
-        "input_token_cost_per_million": 30.0,
-        "output_token_cost_per_million": 60.0
-    },
     "gpt-4o-mini": {
         "model": ChatOpenAI,
         "premium": False,
@@ -269,33 +261,61 @@ class PaymentRequest(BaseModel):
         "input_token_cost_per_million": 3.5,
         "output_token_cost_per_million": 10.5
     },
-    "sonar-small-chat": {
+    "llama-3-sonar-small-32k-online": {
         "model": ChatPerplexity,
         "premium": False,
         "company": "Perplexity",
         "input_token_cost_per_million": 0.2,
         "output_token_cost_per_million": 0.2
     },
-    "sonar-small-online": {
+    "llama-3-sonar-small-32k-chat": {
         "model": ChatPerplexity,
         "premium": True,
         "company": "Perplexity",
         "input_token_cost_per_million": 0.2,
         "output_token_cost_per_million": 0.2
     },
-    "sonar-medium-chat": {
+    "llama-3-sonar-large-32k-online": {
         "model": ChatPerplexity,
         "premium": False,
         "company": "Perplexity",
-        "input_token_cost_per_million": 0.6,
-        "output_token_cost_per_million": 0.6
+        "input_token_cost_per_million": 1,
+        "output_token_cost_per_million": 1
     },
-    "sonar-medium-online": {
+    "llama-3-sonar-large-32k-chat": {
         "model": ChatPerplexity,
         "premium": True,
         "company": "Perplexity",
-        "input_token_cost_per_million": 0.6,
-        "output_token_cost_per_million": 0.6
+        "input_token_cost_per_million": 1,
+        "output_token_cost_per_million": 1
+    },
+    "llama-3.1-sonar-small-128k-online": {
+        "model": ChatPerplexity,
+        "premium": True,
+        "company": "Perplexity",
+        "input_token_cost_per_million": 0.2,
+        "output_token_cost_per_million": 0.2
+    },
+    "llama-3.1-sonar-small-128k-chat": {
+        "model": ChatPerplexity,
+        "premium": True,
+        "company": "Perplexity",
+        "input_token_cost_per_million": 0.2,
+        "output_token_cost_per_million": 0.2
+    },
+    "llama-3.1-sonar-large-128k-online": {
+        "model": ChatPerplexity,
+        "premium": True,
+        "company": "Perplexity",
+        "input_token_cost_per_million": 1,
+        "output_token_cost_per_million": 1
+    },
+    "llama-3.1-sonar-large-128k-chat": {
+        "model": ChatPerplexity,
+        "premium": True,
+        "company": "Perplexity",
+        "input_token_cost_per_million": 1,
+        "output_token_cost_per_million": 1
     },
     "codellama/CodeLlama-34b-Instruct-hf": {
         "model": ChatTogether,
diff --git a/web/src/components/LandingPageDescription.js b/web/src/components/LandingPageDescription.js
index ca85777..79e1b27 100644
--- a/web/src/components/LandingPageDescription.js
+++ b/web/src/components/LandingPageDescription.js
@@ -67,10 +67,10 @@ export const LandingPageDescription = React.forwardRef((props, ref) => {
           <p className="text-sm text-gray-500 dark:text-gray-400">A versatile language model from Perplexity.</p>
           <Button className="justify-start" variant="link" onClick={async () => {
             const isVerified = await verifyGoogleAuth();
-            if (isVerified) navigate('/chat', { state: { userModel: "sonar-medium-online" } });
+            if (isVerified) navigate('/chat', { state: { userModel: "llama-3.1-sonar-large-128k-online" } });
 
             else {
-              model = "sonar-medium-online";
+              model = "llama-3.1-sonar-large-128k-online";
               login();
             }
           }}>
diff --git a/web/src/options/modelOptions.js b/web/src/options/modelOptions.js
index 2932ee4..58b9272 100644
--- a/web/src/options/modelOptions.js
+++ b/web/src/options/modelOptions.js
@@ -9,7 +9,6 @@ export const modelOptions = [
     { label: "GPT-3.5 Turbo", value: "gpt-3.5-turbo", companyLogo: <RiOpenaiFill />, color: "text-blue-500", isPremium: false },
     { label: "GPT-4", value: "gpt-4", companyLogo: <RiOpenaiFill />, color: "text-blue-500", isPremium: true },
     { label: "GPT-4 Turbo Preview", value: "gpt-4-turbo-preview", companyLogo: <RiOpenaiFill />, color: "text-blue-500", isPremium: true },
-    { label: "GPT-4 o", value: "gpt-4o", companyLogo: <RiOpenaiFill />, color: "text-blue-500", isPremium: true },
     { label: "GPT-4 o mini", value: "gpt-4o-mini", companyLogo: <RiOpenaiFill />, color: "text-blue-500", isPremium: false },
     { label: "Claude 3 Haiku", value: "claude-3-haiku-20240307", companyLogo: <img src={anthropic} alt="" width={20} height={20} />, color: "text-orange-300", isPremium: false },
     { label: "Claude 3 Sonnet", value: "claude-3-sonnet-20240229", companyLogo: <img src={anthropic} alt="" width={20} height={20} />, color: "text-orange-300", isPremium: true },
@@ -25,10 +24,14 @@ export const modelOptions = [
     { label: "Gemini 1.5 Pro", value: "gemini-1.5-pro-latest", companyLogo: <FcGoogle />, color: "bg-google-gradient", isPremium: true },
     { label: "Gemma 2b", value: "google/gemma-2b-it", companyLogo: <FcGoogle />, color: "bg-google-gradient", isPremium: false },
     { label: "Gemma 7b", value: "google/gemma-7b-it", companyLogo: <FcGoogle />, color: "bg-google-gradient", isPremium: false },
-    { label: "Sonar Small Chat", value: "sonar-small-chat", companyLogo: <img src={perplexity} alt="" width={20} height={20} />, color: "text-blue-500", isPremium: false },
-    { label: "Sonar Small Online", value: "sonar-small-online", companyLogo: <img src={perplexity} alt="" width={20} height={20} />, color: "text-blue-500", isPremium: true },
-    { label: "Sonar Medium Chat", value: "sonar-medium-chat", companyLogo: <img src={perplexity} alt="" width={20} height={20} />, color: "text-blue-500", isPremium: false },
-    { label: "Sonar Medium Online", value: "sonar-medium-online", companyLogo: <img src={perplexity} alt="" width={20} height={20} />, color: "text-blue-500", isPremium: true },
+    { label: "Sonar Small 32k Online", value: "llama-3-sonar-small-32k-online", companyLogo: <img src={perplexity} alt="" width={20} height={20} />, color: "text-blue-500", isPremium: false },
+    { label: "Sonar Small 32k Chat", value: "llama-3-sonar-small-32k-chat", companyLogo: <img src={perplexity} alt="" width={20} height={20} />, color: "text-blue-500", isPremium: true },
+    { label: "Sonar Large 32k Online", value: "llama-3-sonar-large-32k-online", companyLogo: <img src={perplexity} alt="" width={20} height={20} />, color: "text-blue-500", isPremium: false },
+    { label: "Sonar Large 32k Chat", value: "llama-3-sonar-large-32k-chat", companyLogo: <img src={perplexity} alt="" width={20} height={20} />, color: "text-blue-500", isPremium: true },
+    { label: "Sonar Small 128k Online", value: "llama-3.1-sonar-small-128k-online", companyLogo: <img src={perplexity} alt="" width={20} height={20} />, color: "text-blue-500", isPremium: true },
+    { label: "Sonar Small 128k Chat", value: "llama-3.1-sonar-small-128k-chat", companyLogo: <img src={perplexity} alt="" width={20} height={20} />, color: "text-blue-500", isPremium: true },
+    { label: "Sonar Large 128k Online", value: "llama-3.1-sonar-large-128k-online", companyLogo: <img src={perplexity} alt="" width={20} height={20} />, color: "text-blue-500", isPremium: true },
+    { label: "Sonar Large 128k Chat", value: "llama-3.1-sonar-large-128k-chat", companyLogo: <img src={perplexity} alt="" width={20} height={20} />, color: "text-blue-500", isPremium: true },
     { label: "Codellama 34b Instruct", value: "codellama/CodeLlama-34b-Instruct-hf", companyLogo: <img src={meta} alt="" width={20} height={20} />, color: "text-blue-500", isPremium: false },
     { label: "Codellama 70b Instruct", value: "codellama/CodeLlama-70b-Instruct-hf", companyLogo: <img src={meta} alt="" width={20} height={20} />, color: "text-blue-500", isPremium: true },
     { label: "Meta Llama 2 13b Chat", value: "meta-llama/Llama-2-13b-chat-hf", companyLogo: <img src={meta} alt="" width={20} height={20} />, color: "text-blue-500", isPremium: false },