diff --git a/google/genai/_interactions/_compat.py b/google/genai/_interactions/_compat.py
index 25b3af666..d00a0df9c 100644
--- a/google/genai/_interactions/_compat.py
+++ b/google/genai/_interactions/_compat.py
@@ -17,7 +17,7 @@
 
 from typing import TYPE_CHECKING, Any, Union, Generic, TypeVar, Callable, cast, overload
 from datetime import date, datetime
-from typing_extensions import Self, Literal
+from typing_extensions import Self, Literal, TypedDict
 
 import pydantic
 from pydantic.fields import FieldInfo
@@ -146,6 +146,10 @@ def model_json(model: pydantic.BaseModel, *, indent: int | None = None) -> str:
     return model.model_dump_json(indent=indent)
 
 
+class _ModelDumpKwargs(TypedDict, total=False):
+    by_alias: bool
+
+
 def model_dump(
     model: pydantic.BaseModel,
     *,
@@ -157,6 +161,9 @@ def model_dump(
     by_alias: bool | None = None,
 ) -> dict[str, Any]:
     if (not PYDANTIC_V1) or hasattr(model, "model_dump"):
+        kwargs: _ModelDumpKwargs = {}
+        if by_alias is not None:
+            kwargs["by_alias"] = by_alias
         return model.model_dump(
             mode=mode,
             exclude=exclude,
@@ -164,7 +171,7 @@ def model_dump(
             exclude_defaults=exclude_defaults,
             # warnings are not supported in Pydantic v1
             warnings=True if PYDANTIC_V1 else warnings,
-            by_alias=by_alias,
+            **kwargs,
         )
     return cast(
         "dict[str, Any]",
diff --git a/google/genai/_interactions/types/content.py b/google/genai/_interactions/types/content.py
index b25c11e29..414524101 100644
--- a/google/genai/_interactions/types/content.py
+++ b/google/genai/_interactions/types/content.py
@@ -51,18 +51,18 @@
         VideoContent,
         ThoughtContent,
         FunctionCallContent,
-        FunctionResultContent,
         CodeExecutionCallContent,
-        CodeExecutionResultContent,
         URLContextCallContent,
-        URLContextResultContent,
+        MCPServerToolCallContent,
         GoogleSearchCallContent,
+        FileSearchCallContent,
+        GoogleMapsCallContent,
+        FunctionResultContent,
+        CodeExecutionResultContent,
+        URLContextResultContent,
         GoogleSearchResultContent,
-        MCPServerToolCallContent,
         MCPServerToolResultContent,
-        FileSearchCallContent,
         FileSearchResultContent,
-        GoogleMapsCallContent,
         GoogleMapsResultContent,
     ],
     PropertyInfo(discriminator="type"),
diff --git a/google/genai/_interactions/types/content_delta.py b/google/genai/_interactions/types/content_delta.py
index 30850b47f..8379e4614 100644
--- a/google/genai/_interactions/types/content_delta.py
+++ b/google/genai/_interactions/types/content_delta.py
@@ -43,24 +43,20 @@
     "DeltaThoughtSummaryContent",
     "DeltaThoughtSignature",
     "DeltaFunctionCall",
-    "DeltaFunctionResult",
-    "DeltaFunctionResultResult",
-    "DeltaFunctionResultResultItems",
-    "DeltaFunctionResultResultItemsItem",
     "DeltaCodeExecutionCall",
-    "DeltaCodeExecutionResult",
     "DeltaURLContextCall",
-    "DeltaURLContextResult",
     "DeltaGoogleSearchCall",
-    "DeltaGoogleSearchResult",
     "DeltaMCPServerToolCall",
-    "DeltaMCPServerToolResult",
-    "DeltaMCPServerToolResultResult",
-    "DeltaMCPServerToolResultResultItems",
-    "DeltaMCPServerToolResultResultItemsItem",
     "DeltaFileSearchCall",
-    "DeltaFileSearchResult",
     "DeltaGoogleMapsCall",
+    "DeltaFunctionResult",
+    "DeltaFunctionResultResultFunctionResultSubcontentList",
+    "DeltaCodeExecutionResult",
+    "DeltaURLContextResult",
+    "DeltaGoogleSearchResult",
+    "DeltaMCPServerToolResult",
+    "DeltaMCPServerToolResultResultFunctionResultSubcontentList",
+    "DeltaFileSearchResult",
     "DeltaGoogleMapsResult",
 ]
 
@@ -163,107 +159,126 @@ class DeltaFunctionCall(BaseModel):
     """A signature hash for backend validation."""
 
 
-DeltaFunctionResultResultItemsItem: TypeAlias = Union[TextContent, ImageContent]
+class DeltaCodeExecutionCall(BaseModel):
+    id: str
+    """A unique ID for this specific tool call."""
 
+    arguments: CodeExecutionCallArguments
+    """The arguments to pass to the code execution."""
 
-class DeltaFunctionResultResultItems(BaseModel):
-    items: Optional[List[DeltaFunctionResultResultItemsItem]] = None
+    type: Literal["code_execution_call"]
 
+    signature: Optional[str] = None
+    """A signature hash for backend validation."""
 
-DeltaFunctionResultResult: TypeAlias = Union[DeltaFunctionResultResultItems, str, object]
 
+class DeltaURLContextCall(BaseModel):
+    id: str
+    """A unique ID for this specific tool call."""
 
-class DeltaFunctionResult(BaseModel):
-    call_id: str
-    """ID to match the ID from the function call block."""
+    arguments: URLContextCallArguments
+    """The arguments to pass to the URL context."""
 
-    result: DeltaFunctionResultResult
-    """Tool call result delta."""
+    type: Literal["url_context_call"]
 
-    type: Literal["function_result"]
+    signature: Optional[str] = None
+    """A signature hash for backend validation."""
 
-    is_error: Optional[bool] = None
 
-    name: Optional[str] = None
+class DeltaGoogleSearchCall(BaseModel):
+    id: str
+    """A unique ID for this specific tool call."""
+
+    arguments: GoogleSearchCallArguments
+    """The arguments to pass to Google Search."""
+
+    type: Literal["google_search_call"]
 
     signature: Optional[str] = None
     """A signature hash for backend validation."""
 
 
-class DeltaCodeExecutionCall(BaseModel):
+class DeltaMCPServerToolCall(BaseModel):
     id: str
     """A unique ID for this specific tool call."""
 
-    arguments: CodeExecutionCallArguments
-    """The arguments to pass to the code execution."""
+    arguments: Dict[str, object]
 
-    type: Literal["code_execution_call"]
+    name: str
 
-    signature: Optional[str] = None
-    """A signature hash for backend validation."""
+    server_name: str
 
+    type: Literal["mcp_server_tool_call"]
 
-class DeltaCodeExecutionResult(BaseModel):
-    call_id: str
-    """ID to match the ID from the function call block."""
+    signature: Optional[str] = None
+    """A signature hash for backend validation."""
 
-    result: str
 
-    type: Literal["code_execution_result"]
+class DeltaFileSearchCall(BaseModel):
+    id: str
+    """A unique ID for this specific tool call."""
 
-    is_error: Optional[bool] = None
+    type: Literal["file_search_call"]
 
     signature: Optional[str] = None
     """A signature hash for backend validation."""
 
 
-class DeltaURLContextCall(BaseModel):
+class DeltaGoogleMapsCall(BaseModel):
     id: str
     """A unique ID for this specific tool call."""
 
-    arguments: URLContextCallArguments
-    """The arguments to pass to the URL context."""
+    type: Literal["google_maps_call"]
 
-    type: Literal["url_context_call"]
+    arguments: Optional[GoogleMapsCallArguments] = None
+    """The arguments to pass to the Google Maps tool."""
 
     signature: Optional[str] = None
     """A signature hash for backend validation."""
 
 
-class DeltaURLContextResult(BaseModel):
+DeltaFunctionResultResultFunctionResultSubcontentList: TypeAlias = Annotated[
+    Union[TextContent, ImageContent], PropertyInfo(discriminator="type")
+]
+
+
+class DeltaFunctionResult(BaseModel):
     call_id: str
     """ID to match the ID from the function call block."""
 
-    result: List[URLContextResult]
+    result: Union[List[DeltaFunctionResultResultFunctionResultSubcontentList], str, object]
 
-    type: Literal["url_context_result"]
+    type: Literal["function_result"]
 
     is_error: Optional[bool] = None
 
+    name: Optional[str] = None
+
     signature: Optional[str] = None
     """A signature hash for backend validation."""
 
 
-class DeltaGoogleSearchCall(BaseModel):
-    id: str
-    """A unique ID for this specific tool call."""
+class DeltaCodeExecutionResult(BaseModel):
+    call_id: str
+    """ID to match the ID from the function call block."""
 
-    arguments: GoogleSearchCallArguments
-    """The arguments to pass to Google Search."""
+    result: str
 
-    type: Literal["google_search_call"]
+    type: Literal["code_execution_result"]
+
+    is_error: Optional[bool] = None
 
     signature: Optional[str] = None
     """A signature hash for backend validation."""
 
 
-class DeltaGoogleSearchResult(BaseModel):
+class DeltaURLContextResult(BaseModel):
     call_id: str
     """ID to match the ID from the function call block."""
 
-    result: List[GoogleSearchResult]
+    result: List[URLContextResult]
 
-    type: Literal["google_search_result"]
+    type: Literal["url_context_result"]
 
     is_error: Optional[bool] = None
 
@@ -271,38 +286,30 @@ class DeltaGoogleSearchResult(BaseModel):
     """A signature hash for backend validation."""
 
 
-class DeltaMCPServerToolCall(BaseModel):
-    id: str
-    """A unique ID for this specific tool call."""
-
-    arguments: Dict[str, object]
+class DeltaGoogleSearchResult(BaseModel):
+    call_id: str
+    """ID to match the ID from the function call block."""
 
-    name: str
+    result: List[GoogleSearchResult]
 
-    server_name: str
+    type: Literal["google_search_result"]
 
-    type: Literal["mcp_server_tool_call"]
+    is_error: Optional[bool] = None
 
     signature: Optional[str] = None
     """A signature hash for backend validation."""
 
 
-DeltaMCPServerToolResultResultItemsItem: TypeAlias = Union[TextContent, ImageContent]
-
-
-class DeltaMCPServerToolResultResultItems(BaseModel):
-    items: Optional[List[DeltaMCPServerToolResultResultItemsItem]] = None
-
-
-DeltaMCPServerToolResultResult: TypeAlias = Union[DeltaMCPServerToolResultResultItems, str, object]
+DeltaMCPServerToolResultResultFunctionResultSubcontentList: TypeAlias = Annotated[
+    Union[TextContent, ImageContent], PropertyInfo(discriminator="type")
+]
 
 
 class DeltaMCPServerToolResult(BaseModel):
     call_id: str
     """ID to match the ID from the function call block."""
 
-    result: DeltaMCPServerToolResultResult
-    """Tool call result delta."""
+    result: Union[List[DeltaMCPServerToolResultResultFunctionResultSubcontentList], str, object]
 
     type: Literal["mcp_server_tool_result"]
 
@@ -314,16 +321,6 @@ class DeltaMCPServerToolResult(BaseModel):
     """A signature hash for backend validation."""
 
 
-class DeltaFileSearchCall(BaseModel):
-    id: str
-    """A unique ID for this specific tool call."""
-
-    type: Literal["file_search_call"]
-
-    signature: Optional[str] = None
-    """A signature hash for backend validation."""
-
-
 class DeltaFileSearchResult(BaseModel):
     call_id: str
     """ID to match the ID from the function call block."""
@@ -336,19 +333,6 @@ class DeltaFileSearchResult(BaseModel):
     """A signature hash for backend validation."""
 
 
-class DeltaGoogleMapsCall(BaseModel):
-    id: str
-    """A unique ID for this specific tool call."""
-
-    type: Literal["google_maps_call"]
-
-    arguments: Optional[GoogleMapsCallArguments] = None
-    """The arguments to pass to the Google Maps tool."""
-
-    signature: Optional[str] = None
-    """A signature hash for backend validation."""
-
-
 class DeltaGoogleMapsResult(BaseModel):
     call_id: str
     """ID to match the ID from the function call block."""
@@ -372,18 +356,18 @@ class DeltaGoogleMapsResult(BaseModel):
         DeltaThoughtSummary,
         DeltaThoughtSignature,
         DeltaFunctionCall,
-        DeltaFunctionResult,
         DeltaCodeExecutionCall,
-        DeltaCodeExecutionResult,
         DeltaURLContextCall,
-        DeltaURLContextResult,
         DeltaGoogleSearchCall,
-        DeltaGoogleSearchResult,
         DeltaMCPServerToolCall,
-        DeltaMCPServerToolResult,
         DeltaFileSearchCall,
-        DeltaFileSearchResult,
         DeltaGoogleMapsCall,
+        DeltaFunctionResult,
+        DeltaCodeExecutionResult,
+        DeltaURLContextResult,
+        DeltaGoogleSearchResult,
+        DeltaMCPServerToolResult,
+        DeltaFileSearchResult,
         DeltaGoogleMapsResult,
     ],
     PropertyInfo(discriminator="type"),
@@ -392,6 +376,7 @@ class DeltaGoogleMapsResult(BaseModel):
 
 class ContentDelta(BaseModel):
     delta: Delta
+    """The delta content data for a content block."""
 
     event_type: Literal["content.delta"]
 
@@ -399,5 +384,6 @@ class ContentDelta(BaseModel):
 
     event_id: Optional[str] = None
     """
-    The event_id token to be used to resume the interaction stream, from this event.
+    The event_id token to be used to resume the interaction stream, from
+    this event.
     """
diff --git a/google/genai/_interactions/types/content_param.py b/google/genai/_interactions/types/content_param.py
index 113933f83..34b864a33 100644
--- a/google/genai/_interactions/types/content_param.py
+++ b/google/genai/_interactions/types/content_param.py
@@ -51,17 +51,17 @@
     VideoContentParam,
     ThoughtContentParam,
     FunctionCallContentParam,
-    FunctionResultContentParam,
     CodeExecutionCallContentParam,
-    CodeExecutionResultContentParam,
     URLContextCallContentParam,
-    URLContextResultContentParam,
+    MCPServerToolCallContentParam,
     GoogleSearchCallContentParam,
+    FileSearchCallContentParam,
+    GoogleMapsCallContentParam,
+    FunctionResultContentParam,
+    CodeExecutionResultContentParam,
+    URLContextResultContentParam,
     GoogleSearchResultContentParam,
-    MCPServerToolCallContentParam,
     MCPServerToolResultContentParam,
-    FileSearchCallContentParam,
     FileSearchResultContentParam,
-    GoogleMapsCallContentParam,
     GoogleMapsResultContentParam,
 ]
diff --git a/google/genai/_interactions/types/content_start.py b/google/genai/_interactions/types/content_start.py
index 1431cb1eb..31688b7bd 100644
--- a/google/genai/_interactions/types/content_start.py
+++ b/google/genai/_interactions/types/content_start.py
@@ -34,5 +34,6 @@ class ContentStart(BaseModel):
 
     event_id: Optional[str] = None
     """
-    The event_id token to be used to resume the interaction stream, from this event.
+    The event_id token to be used to resume the interaction stream, from
+    this event.
     """
diff --git a/google/genai/_interactions/types/content_stop.py b/google/genai/_interactions/types/content_stop.py
index 578c1f2c9..d564cb7ec 100644
--- a/google/genai/_interactions/types/content_stop.py
+++ b/google/genai/_interactions/types/content_stop.py
@@ -30,5 +30,6 @@ class ContentStop(BaseModel):
 
     event_id: Optional[str] = None
     """
-    The event_id token to be used to resume the interaction stream, from this event.
+    The event_id token to be used to resume the interaction stream, from
+    this event.
     """
diff --git a/google/genai/_interactions/types/error_event.py b/google/genai/_interactions/types/error_event.py
index 8abf8ca3e..e109de7f6 100644
--- a/google/genai/_interactions/types/error_event.py
+++ b/google/genai/_interactions/types/error_event.py
@@ -41,5 +41,6 @@ class ErrorEvent(BaseModel):
 
     event_id: Optional[str] = None
     """
-    The event_id token to be used to resume the interaction stream, from this event.
+    The event_id token to be used to resume the interaction stream, from
+    this event.
     """
diff --git a/google/genai/_interactions/types/file_citation.py b/google/genai/_interactions/types/file_citation.py
index 6fa247093..d6f760505 100644
--- a/google/genai/_interactions/types/file_citation.py
+++ b/google/genai/_interactions/types/file_citation.py
@@ -41,4 +41,7 @@ class FileCitation(BaseModel):
     """Source attributed for a portion of the text."""
 
     start_index: Optional[int] = None
-    """Start of segment of the response that is attributed to this source."""
+    """Start of segment of the response that is attributed to this source.
+
+    Index indicates the start of the segment, measured in bytes.
+    """
diff --git a/google/genai/_interactions/types/file_citation_param.py b/google/genai/_interactions/types/file_citation_param.py
index 5f4843d75..e7ccff934 100644
--- a/google/genai/_interactions/types/file_citation_param.py
+++ b/google/genai/_interactions/types/file_citation_param.py
@@ -40,4 +40,7 @@ class FileCitationParam(TypedDict, total=False):
     """Source attributed for a portion of the text."""
 
     start_index: int
-    """Start of segment of the response that is attributed to this source."""
+    """Start of segment of the response that is attributed to this source.
+
+    Index indicates the start of the segment, measured in bytes.
+    """
diff --git a/google/genai/_interactions/types/generation_config.py b/google/genai/_interactions/types/generation_config.py
index 4972faba0..cf2b99c9a 100644
--- a/google/genai/_interactions/types/generation_config.py
+++ b/google/genai/_interactions/types/generation_config.py
@@ -58,7 +58,7 @@ class GenerationConfig(BaseModel):
     """Whether to include thought summaries in the response."""
 
     tool_choice: Optional[ToolChoice] = None
-    """The tool choice for the interaction."""
+    """The tool choice configuration."""
 
     top_p: Optional[float] = None
     """The maximum cumulative probability of tokens to consider when sampling."""
diff --git a/google/genai/_interactions/types/generation_config_param.py b/google/genai/_interactions/types/generation_config_param.py
index a18ac8798..286df7766 100644
--- a/google/genai/_interactions/types/generation_config_param.py
+++ b/google/genai/_interactions/types/generation_config_param.py
@@ -60,7 +60,7 @@ class GenerationConfigParam(TypedDict, total=False):
     """Whether to include thought summaries in the response."""
 
     tool_choice: ToolChoice
-    """The tool choice for the interaction."""
+    """The tool choice configuration."""
 
     top_p: float
     """The maximum cumulative probability of tokens to consider when sampling."""
diff --git a/google/genai/_interactions/types/interaction.py b/google/genai/_interactions/types/interaction.py
index 0885908ac..f0bbf9a0f 100644
--- a/google/genai/_interactions/types/interaction.py
+++ b/google/genai/_interactions/types/interaction.py
@@ -66,18 +66,18 @@
     VideoContent,
     ThoughtContent,
     FunctionCallContent,
-    FunctionResultContent,
     CodeExecutionCallContent,
-    CodeExecutionResultContent,
     URLContextCallContent,
-    URLContextResultContent,
+    MCPServerToolCallContent,
     GoogleSearchCallContent,
+    FileSearchCallContent,
+    GoogleMapsCallContent,
+    FunctionResultContent,
+    CodeExecutionResultContent,
+    URLContextResultContent,
     GoogleSearchResultContent,
-    MCPServerToolCallContent,
     MCPServerToolResultContent,
-    FileSearchCallContent,
     FileSearchResultContent,
-    GoogleMapsCallContent,
     GoogleMapsResultContent,
 ]
 
diff --git a/google/genai/_interactions/types/interaction_complete_event.py b/google/genai/_interactions/types/interaction_complete_event.py
index b45a642f5..7b537a588 100644
--- a/google/genai/_interactions/types/interaction_complete_event.py
+++ b/google/genai/_interactions/types/interaction_complete_event.py
@@ -35,5 +35,6 @@ class InteractionCompleteEvent(BaseModel):
 
     event_id: Optional[str] = None
     """
-    The event_id token to be used to resume the interaction stream, from this event.
+    The event_id token to be used to resume the interaction stream, from
+    this event.
     """
diff --git a/google/genai/_interactions/types/interaction_create_params.py b/google/genai/_interactions/types/interaction_create_params.py
index aebf09847..4a6610323 100644
--- a/google/genai/_interactions/types/interaction_create_params.py
+++ b/google/genai/_interactions/types/interaction_create_params.py
@@ -111,18 +111,18 @@ class BaseCreateModelInteractionParams(TypedDict, total=False):
     VideoContentParam,
     ThoughtContentParam,
     FunctionCallContentParam,
-    FunctionResultContentParam,
     CodeExecutionCallContentParam,
-    CodeExecutionResultContentParam,
     URLContextCallContentParam,
-    URLContextResultContentParam,
+    MCPServerToolCallContentParam,
     GoogleSearchCallContentParam,
+    FileSearchCallContentParam,
+    GoogleMapsCallContentParam,
+    FunctionResultContentParam,
+    CodeExecutionResultContentParam,
+    URLContextResultContentParam,
     GoogleSearchResultContentParam,
-    MCPServerToolCallContentParam,
     MCPServerToolResultContentParam,
-    FileSearchCallContentParam,
     FileSearchResultContentParam,
-    GoogleMapsCallContentParam,
     GoogleMapsResultContentParam,
 ]
 
diff --git a/google/genai/_interactions/types/interaction_start_event.py b/google/genai/_interactions/types/interaction_start_event.py
index 1202ec849..6bca76557 100644
--- a/google/genai/_interactions/types/interaction_start_event.py
+++ b/google/genai/_interactions/types/interaction_start_event.py
@@ -32,5 +32,6 @@ class InteractionStartEvent(BaseModel):
 
     event_id: Optional[str] = None
     """
-    The event_id token to be used to resume the interaction stream, from this event.
+    The event_id token to be used to resume the interaction stream, from
+    this event.
     """
diff --git a/google/genai/_interactions/types/interaction_status_update.py b/google/genai/_interactions/types/interaction_status_update.py
index b4c571ab3..aca983c58 100644
--- a/google/genai/_interactions/types/interaction_status_update.py
+++ b/google/genai/_interactions/types/interaction_status_update.py
@@ -32,5 +32,6 @@ class InteractionStatusUpdate(BaseModel):
 
     event_id: Optional[str] = None
     """
-    The event_id token to be used to resume the interaction stream, from this event.
+    The event_id token to be used to resume the interaction stream, from
+    this event.
     """
diff --git a/google/genai/_interactions/types/place_citation.py b/google/genai/_interactions/types/place_citation.py
index 21e52636b..fbe6072a5 100644
--- a/google/genai/_interactions/types/place_citation.py
+++ b/google/genai/_interactions/types/place_citation.py
@@ -60,7 +60,10 @@ class PlaceCitation(BaseModel):
     """
 
     start_index: Optional[int] = None
-    """Start of segment of the response that is attributed to this source."""
+    """Start of segment of the response that is attributed to this source.
+
+    Index indicates the start of the segment, measured in bytes.
+    """
 
     url: Optional[str] = None
     """URI reference of the place."""
diff --git a/google/genai/_interactions/types/place_citation_param.py b/google/genai/_interactions/types/place_citation_param.py
index 498b4d9a8..162a78271 100644
--- a/google/genai/_interactions/types/place_citation_param.py
+++ b/google/genai/_interactions/types/place_citation_param.py
@@ -60,7 +60,10 @@ class PlaceCitationParam(TypedDict, total=False):
     """
 
     start_index: int
-    """Start of segment of the response that is attributed to this source."""
+    """Start of segment of the response that is attributed to this source.
+
+    Index indicates the start of the segment, measured in bytes.
+    """
 
     url: str
     """URI reference of the place."""
diff --git a/google/genai/_interactions/types/tool.py b/google/genai/_interactions/types/tool.py
index 3ef06a37d..4e1d1a623 100644
--- a/google/genai/_interactions/types/tool.py
+++ b/google/genai/_interactions/types/tool.py
@@ -27,25 +27,16 @@
 
 __all__ = [
     "Tool",
-    "GoogleSearch",
     "CodeExecution",
     "URLContext",
     "ComputerUse",
     "MCPServer",
+    "GoogleSearch",
     "FileSearch",
     "GoogleMaps",
 ]
 
 
-class GoogleSearch(BaseModel):
-    """A tool that can be used by the model to search Google."""
-
-    type: Literal["google_search"]
-
-    search_types: Optional[List[Literal["web_search", "image_search"]]] = None
-    """The types of search grounding to enable."""
-
-
 class CodeExecution(BaseModel):
     """A tool that can be used by the model to execute code."""
 
@@ -91,6 +82,15 @@ class MCPServer(BaseModel):
     """
 
 
+class GoogleSearch(BaseModel):
+    """A tool that can be used by the model to search Google."""
+
+    type: Literal["google_search"]
+
+    search_types: Optional[List[Literal["web_search", "image_search"]]] = None
+    """The types of search grounding to enable."""
+
+
 class FileSearch(BaseModel):
     """A tool that can be used by the model to search files."""
 
@@ -125,6 +125,6 @@ class GoogleMaps(BaseModel):
 
 
 Tool: TypeAlias = Annotated[
-    Union[Function, GoogleSearch, CodeExecution, URLContext, ComputerUse, MCPServer, FileSearch, GoogleMaps],
+    Union[Function, CodeExecution, URLContext, ComputerUse, MCPServer, GoogleSearch, FileSearch, GoogleMaps],
     PropertyInfo(discriminator="type"),
 ]
diff --git a/google/genai/_interactions/types/tool_param.py b/google/genai/_interactions/types/tool_param.py
index ec01bc2b3..5a00955a8 100644
--- a/google/genai/_interactions/types/tool_param.py
+++ b/google/genai/_interactions/types/tool_param.py
@@ -27,25 +27,16 @@
 
 __all__ = [
     "ToolParam",
-    "GoogleSearch",
     "CodeExecution",
     "URLContext",
     "ComputerUse",
     "MCPServer",
+    "GoogleSearch",
     "FileSearch",
     "GoogleMaps",
 ]
 
 
-class GoogleSearch(TypedDict, total=False):
-    """A tool that can be used by the model to search Google."""
-
-    type: Required[Literal["google_search"]]
-
-    search_types: List[Literal["web_search", "image_search"]]
-    """The types of search grounding to enable."""
-
-
 class CodeExecution(TypedDict, total=False):
     """A tool that can be used by the model to execute code."""
 
@@ -91,6 +82,15 @@ class MCPServer(TypedDict, total=False):
     """
 
 
+class GoogleSearch(TypedDict, total=False):
+    """A tool that can be used by the model to search Google."""
+
+    type: Required[Literal["google_search"]]
+
+    search_types: List[Literal["web_search", "image_search"]]
+    """The types of search grounding to enable."""
+
+
 class FileSearch(TypedDict, total=False):
     """A tool that can be used by the model to search files."""
 
@@ -125,5 +125,5 @@ class GoogleMaps(TypedDict, total=False):
 
 
 ToolParam: TypeAlias = Union[
-    FunctionParam, GoogleSearch, CodeExecution, URLContext, ComputerUse, MCPServer, FileSearch, GoogleMaps
+    FunctionParam, CodeExecution, URLContext, ComputerUse, MCPServer, GoogleSearch, FileSearch, GoogleMaps
 ]
diff --git a/google/genai/_interactions/types/turn.py b/google/genai/_interactions/types/turn.py
index b769c7686..b7be1b25f 100644
--- a/google/genai/_interactions/types/turn.py
+++ b/google/genai/_interactions/types/turn.py
@@ -24,8 +24,7 @@
 
 
 class Turn(BaseModel):
-    content: Union[str, List[Content], None] = None
-    """The content of the turn."""
+    content: Union[List[Content], str, None] = None
 
     role: Optional[str] = None
     """The originator of this turn.
diff --git a/google/genai/_interactions/types/turn_param.py b/google/genai/_interactions/types/turn_param.py
index e55030db1..975b7f1ec 100644
--- a/google/genai/_interactions/types/turn_param.py
+++ b/google/genai/_interactions/types/turn_param.py
@@ -26,8 +26,7 @@
 
 
 class TurnParam(TypedDict, total=False):
-    content: Union[str, Iterable[ContentParam]]
-    """The content of the turn."""
+    content: Union[Iterable[ContentParam], str]
 
     role: str
     """The originator of this turn.
diff --git a/google/genai/_interactions/types/url_citation.py b/google/genai/_interactions/types/url_citation.py
index e1c27bffb..818ce5bf5 100644
--- a/google/genai/_interactions/types/url_citation.py
+++ b/google/genai/_interactions/types/url_citation.py
@@ -32,7 +32,10 @@ class URLCitation(BaseModel):
     """End of the attributed segment, exclusive."""
 
     start_index: Optional[int] = None
-    """Start of segment of the response that is attributed to this source."""
+    """Start of segment of the response that is attributed to this source.
+
+    Index indicates the start of the segment, measured in bytes.
+    """
 
     title: Optional[str] = None
     """The title of the URL."""
diff --git a/google/genai/_interactions/types/url_citation_param.py b/google/genai/_interactions/types/url_citation_param.py
index 6df7dbcae..1f57b5736 100644
--- a/google/genai/_interactions/types/url_citation_param.py
+++ b/google/genai/_interactions/types/url_citation_param.py
@@ -31,7 +31,10 @@ class URLCitationParam(TypedDict, total=False):
     """End of the attributed segment, exclusive."""
 
     start_index: int
-    """Start of segment of the response that is attributed to this source."""
+    """Start of segment of the response that is attributed to this source.
+
+    Index indicates the start of the segment, measured in bytes.
+    """
 
     title: str
     """The title of the URL."""