diff --git a/AmazonBedrock/anthropic/00_Tutorial_How-To.ipynb b/AmazonBedrock/anthropic/00_Tutorial_How-To.ipynb
index cf56243..6e01578 100755
--- a/AmazonBedrock/anthropic/00_Tutorial_How-To.ipynb
+++ b/AmazonBedrock/anthropic/00_Tutorial_How-To.ipynb
@@ -95,7 +95,7 @@
     "session = boto3.Session() # create a boto3 session to dynamically get and set the region name\n",
     "AWS_REGION = session.region_name\n",
     "print(\"AWS Region:\", AWS_REGION)\n",
-    "MODEL_NAME = \"anthropic.claude-3-haiku-20240307-v1:0\"\n",
+    "MODEL_NAME = \"anthropic.claude-haiku-4-5-20251001-v1:0\"\n",
     "\n",
     "%store MODEL_NAME\n",
     "%store AWS_REGION"
diff --git a/AmazonBedrock/anthropic/10_3_Appendix_Empirical_Performance_Evaluations.ipynb b/AmazonBedrock/anthropic/10_3_Appendix_Empirical_Performance_Evaluations.ipynb
index 1bc342a..2af66d3 100755
--- a/AmazonBedrock/anthropic/10_3_Appendix_Empirical_Performance_Evaluations.ipynb
+++ b/AmazonBedrock/anthropic/10_3_Appendix_Empirical_Performance_Evaluations.ipynb
@@ -33,7 +33,7 @@
    "outputs": [],
    "source": [
     "# Store the model name and AWS region for later use\n",
-    "MODEL_NAME = \"anthropic.claude-3-haiku-20240307-v1:0\"\n",
+    "MODEL_NAME = \"anthropic.claude-haiku-4-5-20251001-v1:0\"\n",
     "AWS_REGION = \"us-west-2\"\n",
     "\n",
     "%store MODEL_NAME\n",
diff --git a/AmazonBedrock/boto3/00_Tutorial_How-To.ipynb b/AmazonBedrock/boto3/00_Tutorial_How-To.ipynb
index a78ae59..8d724cc 100755
--- a/AmazonBedrock/boto3/00_Tutorial_How-To.ipynb
+++ b/AmazonBedrock/boto3/00_Tutorial_How-To.ipynb
@@ -100,7 +100,7 @@
     "session = boto3.Session() # create a boto3 session to dynamically get and set the region name\n",
     "AWS_REGION = session.region_name\n",
     "print(\"AWS Region:\", AWS_REGION)\n",
-    "MODEL_NAME = \"anthropic.claude-3-haiku-20240307-v1:0\"\n",
+    "MODEL_NAME = \"anthropic.claude-haiku-4-5-20251001-v1:0\"\n",
     "\n",
     "%store MODEL_NAME\n",
     "%store AWS_REGION"
diff --git a/AmazonBedrock/boto3/10_3_Appendix_Empirical_Performance_Eval.ipynb b/AmazonBedrock/boto3/10_3_Appendix_Empirical_Performance_Eval.ipynb
index b248d8e..693ead5 100755
--- a/AmazonBedrock/boto3/10_3_Appendix_Empirical_Performance_Eval.ipynb
+++ b/AmazonBedrock/boto3/10_3_Appendix_Empirical_Performance_Eval.ipynb
@@ -40,7 +40,7 @@
     "import json\n",
     "\n",
     "# Store the model name and AWS region for later use\n",
-    "MODEL_NAME = \"anthropic.claude-3-haiku-20240307-v1:0\"\n",
+    "MODEL_NAME = \"anthropic.claude-haiku-4-5-20251001-v1:0\"\n",
     "AWS_REGION = \"us-west-2\"\n",
     "\n",
     "%store MODEL_NAME\n",
diff --git a/Anthropic 1P/00_Tutorial_How-To.ipynb b/Anthropic 1P/00_Tutorial_How-To.ipynb
index befac63..2038885 100644
--- a/Anthropic 1P/00_Tutorial_How-To.ipynb	
+++ b/Anthropic 1P/00_Tutorial_How-To.ipynb	
@@ -44,7 +44,7 @@
    "outputs": [],
    "source": [
     "API_KEY = \"your_api_key_here\"\n",
-    "MODEL_NAME = \"claude-3-haiku-20240307\"\n",
+    "MODEL_NAME = \"claude-haiku-4-5\"\n",
     "\n",
     "# Stores the API_KEY & MODEL_NAME variables for use across notebooks within the IPython store\n",
     "%store API_KEY\n",