diff --git a/connectors-endpoints/anthropic-claude2.json b/connectors-endpoints/anthropic-claude2.json
deleted file mode 100644
index f98f8d64..00000000
--- a/connectors-endpoints/anthropic-claude2.json
+++ /dev/null
@@ -1,15 +0,0 @@
-{
-    "name": "Anthropic-Claude2",
-    "connector_type": "anthropic-connector",
-    "uri": "",
-    "token": "",
-    "max_calls_per_second": 1,
-    "max_concurrency": 1,
-    "model": "claude-2",
-    "params": {
-        "timeout": 300,
-        "max_attempts": 3,
-        "temperature": 0.5,
-        "max_tokens_to_sample": 300
-    }
-}
\ No newline at end of file
diff --git a/connectors-endpoints/anthropic-claude4.5.json b/connectors-endpoints/anthropic-claude4.5.json
new file mode 100644
index 00000000..bd7cf9c6
--- /dev/null
+++ b/connectors-endpoints/anthropic-claude4.5.json
@@ -0,0 +1,15 @@
+{
+    "name": "Anthropic-Claude4.5",
+    "connector_type": "anthropic-connector",
+    "uri": "",
+    "token": "",
+    "max_calls_per_second": 1,
+    "max_concurrency": 1,
+    "model": "claude-sonnet-4-5-20250929",
+    "params": {
+      "timeout": 300,
+      "max_attempts": 3,
+      "temperature": 0.0,
+      "max_tokens": 64000
+    }
+  }
\ No newline at end of file
diff --git a/connectors/anthropic-connector.py b/connectors/anthropic-connector.py
index 2f7b0a9a..d6b31c5a 100644
--- a/connectors/anthropic-connector.py
+++ b/connectors/anthropic-connector.py
@@ -1,8 +1,7 @@
 import os
 
 import anthropic
-from anthropic import AI_PROMPT, HUMAN_PROMPT
-from anthropic.types import Completion
+from anthropic.types import Message
 from moonshot.src.connectors.connector import Connector, perform_retry
 from moonshot.src.connectors.connector_response import ConnectorResponse
 from moonshot.src.connectors_endpoints.connector_endpoint_arguments import (
@@ -38,16 +37,31 @@ async def get_response(self, prompt: str) -> ConnectorResponse:
             ConnectorResponse: An object containing the text response generated by the Anthropic model.
         """
         connector_prompt = f"{self.pre_prompt}{prompt}{self.post_prompt}"
+        
+        # Build messages list
+        messages = [{"role": "user", "content": connector_prompt}]
+        
         # Merge self.optional_params with additional parameters
         new_params = {
             **self.optional_params,
             "model": self.model,
-            "prompt": f"{HUMAN_PROMPT}{connector_prompt}{AI_PROMPT}",
+            "messages": messages,
         }
-        response = await self._client.completions.create(**new_params)
+        
+        # Add system prompt if available
+        if self.system_prompt:
+            new_params["system"] = self.system_prompt
+        
+        # Validate that max_tokens is provided and is greater than 0
+        # This assertion is to make the requirements from anthropic API clear to the user
+        # The anthropic API will raise an error if max_tokens is not provided or is less than 0
+        if "max_tokens" not in new_params or new_params.get("max_tokens", 0) <= 0:
+            raise ValueError("max_tokens is required and must be greater than 0")
+        
+        response: Message = await self._client.messages.create(**new_params)
         return ConnectorResponse(response=await self._process_response(response))
 
-    async def _process_response(self, response: Completion) -> str:
+    async def _process_response(self, response: Message) -> str:
         """
         Process an HTTP response and extract relevant information as a string.
 
@@ -56,9 +70,23 @@ async def _process_response(self, response: Completion) -> str:
         from the response body, headers, or other attributes.
 
         Args:
-            response (Completion): An HTTP response object containing the response data.
+            response (Message): An Anthropic Message response object containing the response data.
 
         Returns:
             str: A string representing the relevant information extracted from the response.
         """
-        return response.completion[1:]
+        # Extract text from all text content blocks in the response
+        # Anthropic can return multiple content blocks (text, tool_use, etc.)
+        # We filter for text blocks and join them together
+        if not response.content:
+            return ""
+        
+        text_blocks = []
+        for block in response.content:
+            # Check if this is a text block and extract its text
+            if hasattr(block, "type") and block.type == "text" and hasattr(block, "text"):
+                text_blocks.append(block.text)
+        
+        # We have decided to join text blocks with double newlines to separate paragraphs,
+        # whichever join we decide would have affected the result anyway
+        return "\n\n".join(text_blocks) if text_blocks else ""