diff --git a/README.md b/README.md
index 590a69e..d5def39 100644
--- a/README.md
+++ b/README.md
@@ -177,7 +177,7 @@ The following example showcases how you can integrate GenAI into your project.
 import { GenAIModel } from '@ibm-generative-ai/node-sdk/langchain';
 
 const model = new GenAIModel({
-  modelId: 'google/ul2',
+  modelId: 'google/flan-ul2',
   parameters: {},
   configuration: {
     apiKey: 'pak-.....',
@@ -222,7 +222,7 @@ console.log(text); // ArcticAegis
 import { GenAIModel } from '@ibm-generative-ai/node-sdk/langchain';
 
 const model = new GenAIModel({
-  modelId: 'google/ul2',
+  modelId: 'google/flan-ul2',
   stream: true,
   parameters: {},
   configuration: {
@@ -245,7 +245,7 @@ await model.call('Tell me a joke.', undefined, [
 import { GenAIChatModel } from '@ibm-generative-ai/node-sdk/langchain';
 
 const client = new GenAIChatModel({
-  modelId: 'togethercomputer/gpt-neoxt-chat-base-20b',
+  modelId: 'eleutherai/gpt-neox-20b',
   stream: false,
   configuration: {
     endpoint: process.env.ENDPOINT,
diff --git a/examples/chat.ts b/examples/chat.ts
index 1217790..454d3f7 100644
--- a/examples/chat.ts
+++ b/examples/chat.ts
@@ -4,7 +4,7 @@ const client = new Client({
   apiKey: process.env.GENAI_API_KEY,
 });
 
-const model_id = 'google/ul2';
+const model_id = 'google/flan-ul2';
 
 {
   // Start a conversation
@@ -69,7 +69,7 @@ const model_id = 'google/ul2';
   // Streaming callbacks
   client.chat(
     {
-      model_id: 'google/ul2',
+      model_id: 'google/flan-ul2',
       messages: [{ role: 'user', content: 'How are you?' }],
     },
     { stream: true },
diff --git a/examples/langchain/llm-chat.ts b/examples/langchain/llm-chat.ts
index 6f0921b..1e5ebe5 100644
--- a/examples/langchain/llm-chat.ts
+++ b/examples/langchain/llm-chat.ts
@@ -4,7 +4,7 @@ import { GenAIChatModel } from '../../src/langchain/llm-chat.js';
 
 const makeClient = (stream?: boolean) =>
   new GenAIChatModel({
-    modelId: 'togethercomputer/gpt-neoxt-chat-base-20b',
+    modelId: 'eleutherai/gpt-neox-20b',
     stream,
     configuration: {
       endpoint: process.env.ENDPOINT,
diff --git a/src/tests/e2e/client.test.ts b/src/tests/e2e/client.test.ts
index 44637b6..90d403c 100644
--- a/src/tests/e2e/client.test.ts
+++ b/src/tests/e2e/client.test.ts
@@ -58,7 +58,7 @@ describe('client', () => {
       const makeValidStream = (parameters: Record<string, any> = {}) =>
         client.generate(
           {
-            model_id: 'google/ul2',
+            model_id: 'google/flan-ul2',
             input: 'Hello, World',
             parameters: {
               max_new_tokens: 10,
@@ -89,11 +89,11 @@ describe('client', () => {
           client.generate(
             [
               {
-                model_id: 'google/ul2',
+                model_id: 'google/flan-ul2',
                 input: 'Hello, World',
               },
               {
-                model_id: 'google/ul2',
+                model_id: 'google/flan-ul2',
                 input: 'Hello, World',
               },
             ] as unknown as GenerateInput,
@@ -153,7 +153,7 @@ describe('client', () => {
             const chunks: GenerateOutput[] = [];
             client.generate(
               {
-                model_id: 'google/ul2',
+                model_id: 'google/flan-ul2',
                 input: 'Hello, World',
                 parameters: {},
               },
@@ -215,7 +215,7 @@ describe('client', () => {
       const makeValidStream = () =>
         client.chat(
           {
-            model_id: 'google/ul2',
+            model_id: 'google/flan-ul2',
             messages: [{ role: 'user', content: 'Hello World!' }],
           },
           {
@@ -246,7 +246,7 @@ describe('client', () => {
           const chunks: ChatOutput[] = [];
           client.chat(
             {
-              model_id: 'google/ul2',
+              model_id: 'google/flan-ul2',
               messages: [{ role: 'user', content: 'Hello World!' }],
             },
             {
diff --git a/src/tests/e2e/langchain/llm-chat.test.ts b/src/tests/e2e/langchain/llm-chat.test.ts
index 6add30f..2309f4c 100644
--- a/src/tests/e2e/langchain/llm-chat.test.ts
+++ b/src/tests/e2e/langchain/llm-chat.test.ts
@@ -9,7 +9,7 @@ describeIf(process.env.RUN_LANGCHAIN_CHAT_TESTS === 'true')(
   () => {
     const makeClient = (stream?: boolean) =>
       new GenAIChatModel({
-        modelId: 'togethercomputer/gpt-neoxt-chat-base-20b',
+        modelId: 'eleutherai/gpt-neox-20b',
         stream,
         configuration: {
           endpoint: process.env.ENDPOINT,
diff --git a/src/tests/integration/client.test.ts b/src/tests/integration/client.test.ts
index 93ec1b6..20d21f9 100644
--- a/src/tests/integration/client.test.ts
+++ b/src/tests/integration/client.test.ts
@@ -71,7 +71,7 @@ describe('client', () => {
 
       test('should replace the config', async () => {
         const input = {
-          model_id: 'google/ul2',
+          model_id: 'google/flan-ul2',
           parameters: {
             decoding_method: 'greedy',
             random_seed: 8,
@@ -98,7 +98,7 @@ describe('client', () => {
 
       test('should set and reset the config', async () => {
         const input = {
-          model_id: 'google/ul2',
+          model_id: 'google/flan-ul2',
           parameters: {
             decoding_method: 'greedy',
             random_seed: 8,