Update Bedrock Titan V2 type definitions for encoding format support

- Add embeddingTypes parameter to AmazonTitanV2EmbeddingRequest
- Add embeddingsByType response field for binary format support
- Update type hints for enhanced embedding response handling

Author: timelfrink

litellm/types/llms/bedrock.py

@@ -324,15 +324,22 @@ class CohereEmbeddingResponse(TypedDict):
     texts: List[str]
 
 
-class AmazonTitanV2EmbeddingRequest(TypedDict):
-    inputText: str
+class AmazonTitanV2EmbeddingRequest(TypedDict, total=False):
+    inputText: Required[str]
     dimensions: int
     normalize: bool
+    embeddingTypes: List[Literal["float", "binary"]]
 
 
-class AmazonTitanV2EmbeddingResponse(TypedDict):
-    embedding: List[float]
-    inputTextTokenCount: int
+class AmazonTitanV2EmbeddingsByType(TypedDict, total=False):
+    binary: List[int]  # Array of integers for binary format
+    float: List[float]  # Array of floats for float format
+
+
+class AmazonTitanV2EmbeddingResponse(TypedDict, total=False):
+    embedding: List[float]  # Legacy field - array of floats (backward compatibility)
+    embeddingsByType: AmazonTitanV2EmbeddingsByType  # New format per AWS schema
+    inputTextTokenCount: Required[int]  # Always present in AWS response
 
 
 class AmazonTitanG1EmbeddingRequest(TypedDict):