feat: update Claude Haiku model configuration and response format handling

Author: Abdeali099

transaction_parser/transaction_parser/ai_integration/models.py

@@ -18,6 +18,7 @@ class Model:
     base_url: str
     response_format: str
     supports_temperature: bool = True
+    supports_response_format: bool = True
 
 
 ### DeepSeek Models
@@ -118,16 +119,18 @@ class GeminiFlash(Model):
 class ClaudeHaiku(Model):
     """Anthropic Claude Haiku 4.5 model configuration.
 
-    - `response_format` is set to JSON but JSON output is not guaranteed,
-    because Anthropic's compatibility layer silently ignores the `response_format` parameter.
+    - `response_format` is not sent because Anthropic's compatibility layer
+    rejects `json_object` and silently ignores other values.
+    - JSON output is not guaranteed.
 
     - https://platform.claude.com/docs/en/api/openai-sdk
     """
 
     name: str = "claude-haiku-4-5"
     service_provider: str = "Anthropic"
     base_url: str = "https://api.anthropic.com/v1/"
-    response_format: str = ResponseFormat.JSON.value
+    response_format: str = ResponseFormat.TEXT.value
+    supports_response_format: bool = False
 
 
 ### Model Registry

transaction_parser/transaction_parser/ai_integration/parser.py

@@ -129,10 +129,12 @@ def _build_request_params(self, messages: tuple) -> dict:
         request_params = {
             "model": self.model.name,
             "messages": messages,
-            "response_format": {"type": self.model.response_format},
             "stream": False,
         }
 
+        if self.model.supports_response_format:
+            request_params["response_format"] = {"type": self.model.response_format}
+
         # Only include temperature if the model supports it
         if self.model.supports_temperature:
             request_params["temperature"] = 0.7