Merge pull request #27031 from BerriAI/litellm_/inspiring-euclid-41919d

[Test] Anthropic: Replace Legacy Claude-4-Sonnet Alias With Haiku 4.5

tests/litellm_utils_tests/test_anthropic_token_counter.py

@@ -26,7 +26,7 @@ class TestAnthropicTokenCounter(BaseTokenCounterTest):
         return AnthropicTokenCounter()
 
     def get_test_model(self) -> str:
-        return "claude-sonnet-4-20250514"
+        return "claude-haiku-4-5-20251001"
 
     def get_test_messages(self) -> List[Dict[str, Any]]:
         return [{"role": "user", "content": "Hello, how are you today?"}]

tests/local_testing/test_function_calling.py

@@ -158,7 +158,7 @@ def test_aaparallel_function_call(model):
 @pytest.mark.parametrize(
     "model",
     [
-        "anthropic/claude-4-sonnet-20250514",
+        "anthropic/claude-haiku-4-5-20251001",
         "bedrock/us.anthropic.claude-sonnet-4-5-20250929-v1:0",
     ],
 )

tests/local_testing/test_streaming.py

@@ -1270,7 +1270,7 @@ def test_bedrock_claude_3_streaming():
 @pytest.mark.parametrize(
     "model",
     [
-        "claude-4-sonnet-20250514",
+        "claude-haiku-4-5-20251001",
         "cohere.command-r-plus-v1:0",  # bedrock
         "gpt-3.5-turbo",
     ],
@@ -2696,7 +2696,7 @@ def test_completion_claude_3_function_call_with_streaming():
     try:
         # test without max tokens
         response = completion(
-            model="claude-4-sonnet-20250514",
+            model="claude-haiku-4-5-20251001",
             messages=messages,
             tools=tools,
             tool_choice="required",

tests/pass_through_tests/base_anthropic_messages_test.py

@@ -54,7 +54,7 @@ class BaseAnthropicMessagesTest(ABC):
         print("making request to anthropic passthrough with thinking")
         client = self.get_client()
         response = client.messages.create(
-            model="claude-4-sonnet-20250514",
+            model="claude-haiku-4-5-20251001",
             max_tokens=20000,
             thinking={"type": "enabled", "budget_tokens": 16000},
             messages=[
@@ -75,7 +75,7 @@ class BaseAnthropicMessagesTest(ABC):
         collected_response = []
         client = self.get_client()
         with client.messages.stream(
-            model="claude-4-sonnet-20250514",
+            model="claude-haiku-4-5-20251001",
             max_tokens=20000,
             thinking={"type": "enabled", "budget_tokens": 16000},
             messages=[

tests/pass_through_tests/test_anthropic_passthrough.py

@@ -333,7 +333,7 @@ async def test_anthropic_messages_streaming_cost_injection():
     }
 
     payload = {
-        "model": "claude-4-sonnet-20250514",
+        "model": "claude-haiku-4-5-20251001",
         "max_tokens": 10,
         "stream": True,
         "messages": [{"role": "user", "content": "Say 'Hi'"}],