diff --git a/README.md b/README.md
index 714e8d16..da3db48e 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ async function main() {
   const message = await client.messages.create({
     max_tokens: 1024,
     messages: [{ role: 'user', content: 'Hello, Claude' }],
-    model: 'claude-3-opus-20240229',
+    model: 'claude-3-5-sonnet-latest',
   });
 
   console.log(message.content);
@@ -49,7 +49,7 @@ const client = new Anthropic();
 const stream = await client.messages.create({
   max_tokens: 1024,
   messages: [{ role: 'user', content: 'Hello, Claude' }],
-  model: 'claude-3-opus-20240229',
+  model: 'claude-3-5-sonnet-latest',
   stream: true,
 });
 for await (const messageStreamEvent of stream) {
@@ -76,7 +76,7 @@ async function main() {
   const params: Anthropic.MessageCreateParams = {
     max_tokens: 1024,
     messages: [{ role: 'user', content: 'Hello, Claude' }],
-    model: 'claude-3-opus-20240229',
+    model: 'claude-3-5-sonnet-latest',
   };
   const message: Anthropic.Message = await client.messages.create(params);
 }
@@ -108,7 +108,7 @@ const anthropic = new Anthropic();
 async function main() {
   const stream = anthropic.messages
     .stream({
-      model: 'claude-3-opus-20240229',
+      model: 'claude-3-5-sonnet-latest',
       max_tokens: 1024,
       messages: [
         {
@@ -146,7 +146,7 @@ await anthropic.beta.messages.batches.create({
     {
       custom_id: 'my-first-request',
       params: {
-        model: 'claude-3-5-sonnet-20240620',
+        model: 'claude-3-5-sonnet-latest',
         max_tokens: 1024,
         messages: [{ role: 'user', content: 'Hello, world' }],
       },
@@ -154,7 +154,7 @@ await anthropic.beta.messages.batches.create({
     {
       custom_id: 'my-second-request',
       params: {
-        model: 'claude-3-5-sonnet-20240620',
+        model: 'claude-3-5-sonnet-latest',
         max_tokens: 1024,
         messages: [{ role: 'user', content: 'Hi again, friend' }],
       },
@@ -198,7 +198,7 @@ async function main() {
     .create({
       max_tokens: 1024,
       messages: [{ role: 'user', content: 'Hello, Claude' }],
-      model: 'claude-3-opus-20240229',
+      model: 'claude-3-5-sonnet-latest',
     })
     .catch(async (err) => {
       if (err instanceof Anthropic.APIError) {
@@ -234,7 +234,7 @@ Error codes are as followed:
 All object responses in the SDK provide a `_request_id` property which is added from the `request-id` response header so that you can quickly log failing requests and report them back to Anthropic.
 
 ```ts
-const message = await client.messages.create({ max_tokens: 1024, messages: [{ role: 'user', content: 'Hello, Claude' }], model: 'claude-3-opus-20240229' });
+const message = await client.messages.create({ max_tokens: 1024, messages: [{ role: 'user', content: 'Hello, Claude' }], model: 'claude-3-5-sonnet-latest' });
 console.log(completion._request_id) // req_018EeWyXxfu5pfWkrYcMdjWG
 ```
 
@@ -255,7 +255,7 @@ const client = new Anthropic({
 });
 
 // Or, configure per-request:
-await client.messages.create({ max_tokens: 1024, messages: [{ role: 'user', content: 'Hello, Claude' }], model: 'claude-3-opus-20240229' }, {
+await client.messages.create({ max_tokens: 1024, messages: [{ role: 'user', content: 'Hello, Claude' }], model: 'claude-3-5-sonnet-latest' }, {
   maxRetries: 5,
 });
 ```
@@ -272,7 +272,7 @@ const client = new Anthropic({
 });
 
 // Override per-request:
-await client.messages.create({ max_tokens: 1024, messages: [{ role: 'user', content: 'Hello, Claude' }], model: 'claude-3-opus-20240229' }, {
+await client.messages.create({ max_tokens: 1024, messages: [{ role: 'user', content: 'Hello, Claude' }], model: 'claude-3-5-sonnet-latest' }, {
   timeout: 5 * 1000,
 });
 ```
@@ -329,7 +329,7 @@ const message = await client.messages.create(
   {
     max_tokens: 1024,
     messages: [{ role: 'user', content: 'Hello, Claude' }],
-    model: 'claude-3-opus-20240229',
+    model: 'claude-3-5-sonnet-latest',
   },
   { headers: { 'anthropic-version': 'My-Custom-Value' } },
 );
@@ -351,7 +351,7 @@ const response = await client.messages
   .create({
     max_tokens: 1024,
     messages: [{ role: 'user', content: 'Hello, Claude' }],
-    model: 'claude-3-opus-20240229',
+    model: 'claude-3-5-sonnet-latest',
   })
   .asResponse();
 console.log(response.headers.get('X-My-Header'));
@@ -361,7 +361,7 @@ const { data: message, response: raw } = await client.messages
   .create({
     max_tokens: 1024,
     messages: [{ role: 'user', content: 'Hello, Claude' }],
-    model: 'claude-3-opus-20240229',
+    model: 'claude-3-5-sonnet-latest',
   })
   .withResponse();
 console.log(raw.headers.get('X-My-Header'));
@@ -473,7 +473,7 @@ await client.messages.create(
   {
     max_tokens: 1024,
     messages: [{ role: 'user', content: 'Hello, Claude' }],
-    model: 'claude-3-opus-20240229',
+    model: 'claude-3-5-sonnet-latest',
   },
   {
     httpAgent: new http.Agent({ keepAlive: false }),
diff --git a/examples/cancellation.ts b/examples/cancellation.ts
index 23fb7ec9..fc8bb0c7 100755
--- a/examples/cancellation.ts
+++ b/examples/cancellation.ts
@@ -16,7 +16,7 @@ async function main() {
   const question = 'Hey Claude! How can I recursively list all files in a directory in Rust?';
 
   const stream = await client.messages.create({
-    model: 'claude-3-opus-20240229',
+    model: 'claude-3-5-sonnet-latest',
     stream: true,
     max_tokens: 500,
     messages: [{ role: 'user', content: question }],
diff --git a/examples/demo.ts b/examples/demo.ts
index 609e63ef..33fc2d87 100755
--- a/examples/demo.ts
+++ b/examples/demo.ts
@@ -12,7 +12,7 @@ async function main() {
         content: 'Hey Claude!?',
       },
     ],
-    model: 'claude-3-opus-20240229',
+    model: 'claude-3-5-sonnet-latest',
     max_tokens: 1024,
   });
   console.dir(result);
diff --git a/examples/raw-streaming.ts b/examples/raw-streaming.ts
index 559a6cac..916f2a4d 100755
--- a/examples/raw-streaming.ts
+++ b/examples/raw-streaming.ts
@@ -6,7 +6,7 @@ const client = new Anthropic(); // gets API Key from environment variable ANTHRO
 
 async function main() {
   const stream = await client.messages.create({
-    model: 'claude-3-opus-20240229',
+    model: 'claude-3-5-sonnet-latest',
     stream: true,
     max_tokens: 500,
     messages: [
diff --git a/examples/streaming.ts b/examples/streaming.ts
index 9ac2da60..bc2c74bd 100755
--- a/examples/streaming.ts
+++ b/examples/streaming.ts
@@ -13,7 +13,7 @@ async function main() {
           content: `Hey Claude! How can I recursively list all files in a directory in Rust?`,
         },
       ],
-      model: 'claude-3-opus-20240229',
+      model: 'claude-3-5-sonnet-latest',
       max_tokens: 1024,
     })
     // Once a content block is fully streamed, this event will fire
diff --git a/examples/tools-streaming.ts b/examples/tools-streaming.ts
index 96d9cbdc..816201f2 100644
--- a/examples/tools-streaming.ts
+++ b/examples/tools-streaming.ts
@@ -33,7 +33,7 @@ async function main() {
           },
         },
       ],
-      model: 'claude-3-haiku-20240307',
+      model: 'claude-3-5-sonnet-latest',
       max_tokens: 1024,
     })
     // When a JSON content block delta is encountered this
diff --git a/examples/tools.ts b/examples/tools.ts
index b237043b..1a696bc0 100644
--- a/examples/tools.ts
+++ b/examples/tools.ts
@@ -22,7 +22,7 @@ async function main() {
   ];
 
   const message = await client.messages.create({
-    model: 'claude-3-opus-20240229',
+    model: 'claude-3-5-sonnet-latest',
     max_tokens: 1024,
     messages: [userMessage],
     tools,
@@ -38,7 +38,7 @@ async function main() {
   assert(tool);
 
   const result = await client.messages.create({
-    model: 'claude-3-opus-20240229',
+    model: 'claude-3-5-sonnet-latest',
     max_tokens: 1024,
     messages: [
       userMessage,
diff --git a/packages/bedrock-sdk/README.md b/packages/bedrock-sdk/README.md
index f6eca6f5..74765c47 100644
--- a/packages/bedrock-sdk/README.md
+++ b/packages/bedrock-sdk/README.md
@@ -27,7 +27,7 @@ const client = new AnthropicBedrock();
 
 async function main() {
   const message = await client.messages.create({
-    model: 'anthropic.claude-3-sonnet-20240229-v1:0',
+    model: 'anthropic.claude-3-5-sonnet-20241022-v2:0',
     messages: [
       {
         role: 'user',
diff --git a/packages/bedrock-sdk/examples/demo.ts b/packages/bedrock-sdk/examples/demo.ts
index 810514e8..a918b9ca 100644
--- a/packages/bedrock-sdk/examples/demo.ts
+++ b/packages/bedrock-sdk/examples/demo.ts
@@ -11,7 +11,7 @@ const anthropic = new AnthropicBedrock();
 
 async function main() {
   const message = await anthropic.messages.create({
-    model: 'anthropic.claude-3-sonnet-20240229-v1:0',
+    model: 'anthropic.claude-3-5-sonnet-20241022-v2:0',
     messages: [
       {
         role: 'user',
diff --git a/packages/bedrock-sdk/examples/streaming.ts b/packages/bedrock-sdk/examples/streaming.ts
index e1fac81f..5c577a2d 100644
--- a/packages/bedrock-sdk/examples/streaming.ts
+++ b/packages/bedrock-sdk/examples/streaming.ts
@@ -11,7 +11,7 @@ const client = new AnthropicBedrock();
 
 async function main() {
   const stream = await client.messages.create({
-    model: 'anthropic.claude-3-sonnet-20240229-v1:0',
+    model: 'anthropic.claude-3-5-sonnet-20241022-v2:0',
     messages: [
       {
         role: 'user',
diff --git a/packages/vertex-sdk/README.md b/packages/vertex-sdk/README.md
index 6e63a8c5..6c9a9c93 100644
--- a/packages/vertex-sdk/README.md
+++ b/packages/vertex-sdk/README.md
@@ -30,7 +30,7 @@ async function main() {
         content: 'Hey Claude!',
       },
     ],
-    model: 'claude-3-sonnet@20240229',
+    model: 'claude-3-5-sonnet-v2@20241022',
     max_tokens: 300,
   });
   console.log(JSON.stringify(result, null, 2));
diff --git a/packages/vertex-sdk/examples/vertex.ts b/packages/vertex-sdk/examples/vertex.ts
index 62474cc7..75aba347 100644
--- a/packages/vertex-sdk/examples/vertex.ts
+++ b/packages/vertex-sdk/examples/vertex.ts
@@ -14,7 +14,7 @@ async function main() {
         content: 'Hello!',
       },
     ],
-    model: 'claude-3-sonnet@20240229',
+    model: 'claude-3-5-sonnet-v2@20241022',
     max_tokens: 300,
   });
   console.log(JSON.stringify(result, null, 2));