diff --git a/.stats.yml b/.stats.yml
index eb81a249f1..a6c08f499b 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,2 +1,2 @@
 configured_endpoints: 64
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/openai-ff436357b12348b7c1c930469332a79cd23ac6ec537e645c411893c42de42e57.yml
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/openai-c085faf70d6ff059fbe11b7b6b98123a612524cb9b8a6f649c99526e5b0b1bdb.yml
diff --git a/src/openai/resources/beta/threads/runs/runs.py b/src/openai/resources/beta/threads/runs/runs.py
index 5976ca4559..43069dd1ae 100644
--- a/src/openai/resources/beta/threads/runs/runs.py
+++ b/src/openai/resources/beta/threads/runs/runs.py
@@ -165,7 +165,7 @@ def create(
               assistant will be used.
 
           parallel_tool_calls: Whether to enable
-              [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+              [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
               during tool use.
 
           response_format: Specifies the format that the model must output. Compatible with
@@ -321,7 +321,7 @@ def create(
               assistant will be used.
 
           parallel_tool_calls: Whether to enable
-              [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+              [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
               during tool use.
 
           response_format: Specifies the format that the model must output. Compatible with
@@ -473,7 +473,7 @@ def create(
               assistant will be used.
 
           parallel_tool_calls: Whether to enable
-              [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+              [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
               during tool use.
 
           response_format: Specifies the format that the model must output. Compatible with
@@ -1739,7 +1739,7 @@ async def create(
               assistant will be used.
 
           parallel_tool_calls: Whether to enable
-              [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+              [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
               during tool use.
 
           response_format: Specifies the format that the model must output. Compatible with
@@ -1895,7 +1895,7 @@ async def create(
               assistant will be used.
 
           parallel_tool_calls: Whether to enable
-              [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+              [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
               during tool use.
 
           response_format: Specifies the format that the model must output. Compatible with
@@ -2047,7 +2047,7 @@ async def create(
               assistant will be used.
 
           parallel_tool_calls: Whether to enable
-              [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+              [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
               during tool use.
 
           response_format: Specifies the format that the model must output. Compatible with
diff --git a/src/openai/resources/beta/threads/threads.py b/src/openai/resources/beta/threads/threads.py
index 05c06ff658..c0a908b7a2 100644
--- a/src/openai/resources/beta/threads/threads.py
+++ b/src/openai/resources/beta/threads/threads.py
@@ -342,7 +342,7 @@ def create_and_run(
               assistant will be used.
 
           parallel_tool_calls: Whether to enable
-              [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+              [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
               during tool use.
 
           response_format: Specifies the format that the model must output. Compatible with
@@ -497,7 +497,7 @@ def create_and_run(
               assistant will be used.
 
           parallel_tool_calls: Whether to enable
-              [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+              [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
               during tool use.
 
           response_format: Specifies the format that the model must output. Compatible with
@@ -648,7 +648,7 @@ def create_and_run(
               assistant will be used.
 
           parallel_tool_calls: Whether to enable
-              [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+              [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
               during tool use.
 
           response_format: Specifies the format that the model must output. Compatible with
@@ -1352,7 +1352,7 @@ async def create_and_run(
               assistant will be used.
 
           parallel_tool_calls: Whether to enable
-              [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+              [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
               during tool use.
 
           response_format: Specifies the format that the model must output. Compatible with
@@ -1507,7 +1507,7 @@ async def create_and_run(
               assistant will be used.
 
           parallel_tool_calls: Whether to enable
-              [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+              [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
               during tool use.
 
           response_format: Specifies the format that the model must output. Compatible with
@@ -1658,7 +1658,7 @@ async def create_and_run(
               assistant will be used.
 
           parallel_tool_calls: Whether to enable
-              [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+              [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
               during tool use.
 
           response_format: Specifies the format that the model must output. Compatible with
diff --git a/src/openai/resources/chat/completions.py b/src/openai/resources/chat/completions.py
index ab35b03335..ed8e9373b0 100644
--- a/src/openai/resources/chat/completions.py
+++ b/src/openai/resources/chat/completions.py
@@ -133,7 +133,7 @@ def create(
               choices. Keep `n` as `1` to minimize costs.
 
           parallel_tool_calls: Whether to enable
-              [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+              [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
               during tool use.
 
           presence_penalty: Number between -2.0 and 2.0. Positive values penalize new tokens based on
@@ -316,7 +316,7 @@ def create(
               choices. Keep `n` as `1` to minimize costs.
 
           parallel_tool_calls: Whether to enable
-              [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+              [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
               during tool use.
 
           presence_penalty: Number between -2.0 and 2.0. Positive values penalize new tokens based on
@@ -492,7 +492,7 @@ def create(
               choices. Keep `n` as `1` to minimize costs.
 
           parallel_tool_calls: Whether to enable
-              [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+              [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
               during tool use.
 
           presence_penalty: Number between -2.0 and 2.0. Positive values penalize new tokens based on
@@ -741,7 +741,7 @@ async def create(
               choices. Keep `n` as `1` to minimize costs.
 
           parallel_tool_calls: Whether to enable
-              [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+              [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
               during tool use.
 
           presence_penalty: Number between -2.0 and 2.0. Positive values penalize new tokens based on
@@ -924,7 +924,7 @@ async def create(
               choices. Keep `n` as `1` to minimize costs.
 
           parallel_tool_calls: Whether to enable
-              [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+              [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
               during tool use.
 
           presence_penalty: Number between -2.0 and 2.0. Positive values penalize new tokens based on
@@ -1100,7 +1100,7 @@ async def create(
               choices. Keep `n` as `1` to minimize costs.
 
           parallel_tool_calls: Whether to enable
-              [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+              [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
               during tool use.
 
           presence_penalty: Number between -2.0 and 2.0. Positive values penalize new tokens based on
diff --git a/src/openai/types/beta/thread_create_and_run_params.py b/src/openai/types/beta/thread_create_and_run_params.py
index b8c69eb7ac..dbbff415ec 100644
--- a/src/openai/types/beta/thread_create_and_run_params.py
+++ b/src/openai/types/beta/thread_create_and_run_params.py
@@ -18,6 +18,7 @@
     "ThreadMessage",
     "ThreadMessageAttachment",
     "ThreadMessageAttachmentTool",
+    "ThreadMessageAttachmentToolFileSearch",
     "ThreadToolResources",
     "ThreadToolResourcesCodeInterpreter",
     "ThreadToolResourcesFileSearch",
@@ -112,7 +113,7 @@ class ThreadCreateAndRunParamsBase(TypedDict, total=False):
     parallel_tool_calls: bool
     """
     Whether to enable
-    [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+    [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
     during tool use.
     """
 
@@ -186,7 +187,12 @@ class ThreadCreateAndRunParamsBase(TypedDict, total=False):
     """
 
 
-ThreadMessageAttachmentTool = Union[CodeInterpreterToolParam, FileSearchToolParam]
+class ThreadMessageAttachmentToolFileSearch(TypedDict, total=False):
+    type: Required[Literal["file_search"]]
+    """The type of tool being defined: `file_search`"""
+
+
+ThreadMessageAttachmentTool = Union[CodeInterpreterToolParam, ThreadMessageAttachmentToolFileSearch]
 
 
 class ThreadMessageAttachment(TypedDict, total=False):
diff --git a/src/openai/types/beta/thread_create_params.py b/src/openai/types/beta/thread_create_params.py
index 5072ed12d9..e5ea14a94d 100644
--- a/src/openai/types/beta/thread_create_params.py
+++ b/src/openai/types/beta/thread_create_params.py
@@ -5,7 +5,6 @@
 from typing import List, Union, Iterable, Optional
 from typing_extensions import Literal, Required, TypedDict
 
-from .file_search_tool_param import FileSearchToolParam
 from .code_interpreter_tool_param import CodeInterpreterToolParam
 from .threads.message_content_part_param import MessageContentPartParam
 
@@ -14,6 +13,7 @@
     "Message",
     "MessageAttachment",
     "MessageAttachmentTool",
+    "MessageAttachmentToolFileSearch",
     "ToolResources",
     "ToolResourcesCodeInterpreter",
     "ToolResourcesFileSearch",
@@ -49,7 +49,12 @@ class ThreadCreateParams(TypedDict, total=False):
     """
 
 
-MessageAttachmentTool = Union[CodeInterpreterToolParam, FileSearchToolParam]
+class MessageAttachmentToolFileSearch(TypedDict, total=False):
+    type: Required[Literal["file_search"]]
+    """The type of tool being defined: `file_search`"""
+
+
+MessageAttachmentTool = Union[CodeInterpreterToolParam, MessageAttachmentToolFileSearch]
 
 
 class MessageAttachment(TypedDict, total=False):
diff --git a/src/openai/types/beta/threads/message.py b/src/openai/types/beta/threads/message.py
index ebaabdb0f5..90f083683d 100644
--- a/src/openai/types/beta/threads/message.py
+++ b/src/openai/types/beta/threads/message.py
@@ -5,12 +5,23 @@
 
 from ...._models import BaseModel
 from .message_content import MessageContent
-from ..file_search_tool import FileSearchTool
 from ..code_interpreter_tool import CodeInterpreterTool
 
-__all__ = ["Message", "Attachment", "AttachmentTool", "IncompleteDetails"]
+__all__ = [
+    "Message",
+    "Attachment",
+    "AttachmentTool",
+    "AttachmentToolAssistantToolsFileSearchTypeOnly",
+    "IncompleteDetails",
+]
 
-AttachmentTool = Union[CodeInterpreterTool, FileSearchTool]
+
+class AttachmentToolAssistantToolsFileSearchTypeOnly(BaseModel):
+    type: Literal["file_search"]
+    """The type of tool being defined: `file_search`"""
+
+
+AttachmentTool = Union[CodeInterpreterTool, AttachmentToolAssistantToolsFileSearchTypeOnly]
 
 
 class Attachment(BaseModel):
diff --git a/src/openai/types/beta/threads/message_create_params.py b/src/openai/types/beta/threads/message_create_params.py
index 3668df950d..b1b12293b7 100644
--- a/src/openai/types/beta/threads/message_create_params.py
+++ b/src/openai/types/beta/threads/message_create_params.py
@@ -5,11 +5,10 @@
 from typing import Union, Iterable, Optional
 from typing_extensions import Literal, Required, TypedDict
 
-from ..file_search_tool_param import FileSearchToolParam
 from .message_content_part_param import MessageContentPartParam
 from ..code_interpreter_tool_param import CodeInterpreterToolParam
 
-__all__ = ["MessageCreateParams", "Attachment", "AttachmentTool"]
+__all__ = ["MessageCreateParams", "Attachment", "AttachmentTool", "AttachmentToolFileSearch"]
 
 
 class MessageCreateParams(TypedDict, total=False):
@@ -37,7 +36,12 @@ class MessageCreateParams(TypedDict, total=False):
     """
 
 
-AttachmentTool = Union[CodeInterpreterToolParam, FileSearchToolParam]
+class AttachmentToolFileSearch(TypedDict, total=False):
+    type: Required[Literal["file_search"]]
+    """The type of tool being defined: `file_search`"""
+
+
+AttachmentTool = Union[CodeInterpreterToolParam, AttachmentToolFileSearch]
 
 
 class Attachment(TypedDict, total=False):
diff --git a/src/openai/types/beta/threads/run.py b/src/openai/types/beta/threads/run.py
index ea84f1e97c..81d10d4a56 100644
--- a/src/openai/types/beta/threads/run.py
+++ b/src/openai/types/beta/threads/run.py
@@ -154,7 +154,7 @@ class Run(BaseModel):
     parallel_tool_calls: bool
     """
     Whether to enable
-    [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+    [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
     during tool use.
     """
 
diff --git a/src/openai/types/beta/threads/run_create_params.py b/src/openai/types/beta/threads/run_create_params.py
index a7aa799e00..89da241965 100644
--- a/src/openai/types/beta/threads/run_create_params.py
+++ b/src/openai/types/beta/threads/run_create_params.py
@@ -6,7 +6,6 @@
 from typing_extensions import Literal, Required, TypedDict
 
 from ..assistant_tool_param import AssistantToolParam
-from ..file_search_tool_param import FileSearchToolParam
 from .message_content_part_param import MessageContentPartParam
 from ..code_interpreter_tool_param import CodeInterpreterToolParam
 from ..assistant_tool_choice_option_param import AssistantToolChoiceOptionParam
@@ -17,6 +16,7 @@
     "AdditionalMessage",
     "AdditionalMessageAttachment",
     "AdditionalMessageAttachmentTool",
+    "AdditionalMessageAttachmentToolFileSearch",
     "TruncationStrategy",
     "RunCreateParamsNonStreaming",
     "RunCreateParamsStreaming",
@@ -110,7 +110,7 @@ class RunCreateParamsBase(TypedDict, total=False):
     parallel_tool_calls: bool
     """
     Whether to enable
-    [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+    [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
     during tool use.
     """
 
@@ -173,7 +173,12 @@ class RunCreateParamsBase(TypedDict, total=False):
     """
 
 
-AdditionalMessageAttachmentTool = Union[CodeInterpreterToolParam, FileSearchToolParam]
+class AdditionalMessageAttachmentToolFileSearch(TypedDict, total=False):
+    type: Required[Literal["file_search"]]
+    """The type of tool being defined: `file_search`"""
+
+
+AdditionalMessageAttachmentTool = Union[CodeInterpreterToolParam, AdditionalMessageAttachmentToolFileSearch]
 
 
 class AdditionalMessageAttachment(TypedDict, total=False):
diff --git a/src/openai/types/chat/completion_create_params.py b/src/openai/types/chat/completion_create_params.py
index 47c2a5e24e..7dd7067f66 100644
--- a/src/openai/types/chat/completion_create_params.py
+++ b/src/openai/types/chat/completion_create_params.py
@@ -105,7 +105,7 @@ class CompletionCreateParamsBase(TypedDict, total=False):
     parallel_tool_calls: bool
     """
     Whether to enable
-    [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+    [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
     during tool use.
     """