diff --git a/agent/bedrock_adapter.py b/agent/bedrock_adapter.py
index 614f966e70c..e65867921c4 100644
--- a/agent/bedrock_adapter.py
+++ b/agent/bedrock_adapter.py
@@ -448,7 +448,7 @@ def is_anthropic_bedrock_model(model_id: str) -> bool:
     """
     model_lower = model_id.lower()
     # Strip regional prefix if present
-    for prefix in ("us.", "global.", "eu.", "ap.", "jp."):
+    for prefix in ("us.", "global.", "eu.", "apac.", "ap.", "au.", "jp."):
         if model_lower.startswith(prefix):
             model_lower = model_lower[len(prefix):]
             break
diff --git a/tests/agent/test_bedrock_adapter.py b/tests/agent/test_bedrock_adapter.py
index afb7bbbc948..16d771d8806 100644
--- a/tests/agent/test_bedrock_adapter.py
+++ b/tests/agent/test_bedrock_adapter.py
@@ -1330,6 +1330,15 @@ class TestIsAnthropicBedrockModel:
         from agent.bedrock_adapter import is_anthropic_bedrock_model
         assert is_anthropic_bedrock_model("eu.anthropic.claude-sonnet-4-6") is True
 
+    def test_au_inference_profile(self):
+        from agent.bedrock_adapter import is_anthropic_bedrock_model
+        assert is_anthropic_bedrock_model("au.anthropic.claude-haiku-4-5-20251001-v1:0") is True
+        assert is_anthropic_bedrock_model("au.anthropic.claude-sonnet-4-6") is True
+
+    def test_apac_inference_profile(self):
+        from agent.bedrock_adapter import is_anthropic_bedrock_model
+        assert is_anthropic_bedrock_model("apac.anthropic.claude-sonnet-4-6") is True
+
 
 class TestEmptyTextBlockFix:
     """Test that empty/whitespace-only text blocks are replaced with a