fix(handler.py): refactor together ai rerank call

litellm/llms/together_ai/rerank/handler.py

@@ -15,7 +15,14 @@ from litellm.llms.custom_httpx.http_handler import (
     _get_httpx_client,
     get_async_httpx_client,
 )
-from litellm.types.rerank import RerankRequest, RerankResponse
+from litellm.llms.together_ai.rerank.transformation import TogetherAIRerankConfig
+from litellm.types.rerank import (
+    RerankBilledUnits,
+    RerankRequest,
+    RerankResponse,
+    RerankResponseMeta,
+    RerankTokens,
+)
 
 
 class TogetherAIRerank(BaseLLM):
@@ -65,13 +72,7 @@ class TogetherAIRerank(BaseLLM):
 
         _json_response = response.json()
 
-        response = RerankResponse(
-            id=_json_response.get("id"),
-            results=_json_response.get("results"),
-            meta=_json_response.get("meta") or {},
-        )
-
-        return response
+        return TogetherAIRerankConfig()._transform_response(_json_response)
 
     async def async_rerank(  # New async method
         self,
@@ -97,10 +98,4 @@ class TogetherAIRerank(BaseLLM):
 
         _json_response = response.json()
 
-        return RerankResponse(
-            id=_json_response.get("id"),
-            results=_json_response.get("results"),
-            meta=_json_response.get("meta") or {},
-        )  # Return response
-
-    pass
+        return TogetherAIRerankConfig()._transform_response(_json_response)

litellm/llms/together_ai/rerank/transformation.py

@@ -0,0 +1,34 @@
+"""
+Transformation logic from Cohere's /v1/rerank format to Together AI's  `/v1/rerank` format. 
+
+Why separate file? Make it easy to see how transformation works
+"""
+
+import uuid
+from typing import List, Optional
+
+from litellm.types.rerank import (
+    RerankBilledUnits,
+    RerankResponse,
+    RerankResponseMeta,
+    RerankTokens,
+)
+
+
+class TogetherAIRerankConfig:
+    def _transform_response(self, response: dict) -> RerankResponse:
+
+        _billed_units = RerankBilledUnits(**response.get("usage", {}))
+        _tokens = RerankTokens(**response.get("usage", {}))
+        rerank_meta = RerankResponseMeta(billed_units=_billed_units, tokens=_tokens)
+
+        _results: Optional[List[dict]] = response.get("results")
+
+        if _results is None:
+            raise ValueError(f"No results found in the response={response}")
+
+        return RerankResponse(
+            id=response.get("id") or str(uuid.uuid4()),
+            results=_results,
+            meta=rerank_meta,
+        )  # Return response

litellm/rerank_api/main.py

@@ -9,7 +9,7 @@ from litellm.litellm_core_utils.litellm_logging import Logging as LiteLLMLogging
 from litellm.llms.azure_ai.rerank import AzureAIRerank
 from litellm.llms.cohere.rerank import CohereRerank
 from litellm.llms.jina_ai.rerank.handler import JinaAIRerank
-from litellm.llms.together_ai.rerank import TogetherAIRerank
+from litellm.llms.together_ai.rerank.handler import TogetherAIRerank
 from litellm.secret_managers.main import get_secret
 from litellm.types.rerank import RerankRequest, RerankResponse
 from litellm.types.router import *