diff --git a/aidial_client/resources/chat/completions.py b/aidial_client/resources/chat/completions.py
index 5895121..8e2e06f 100644
--- a/aidial_client/resources/chat/completions.py
+++ b/aidial_client/resources/chat/completions.py
@@ -23,7 +23,6 @@
 )
 from aidial_client.resources.base import AsyncResource, Resource
 from aidial_client.types.chat import (
-    Addon,
     ChatCompletionChunk,
     ChatCompletionResponse,
     FunctionCallSpecParam,
@@ -54,7 +53,6 @@ def create(
         | None = None,
         tools: list[ToolParam] | None = None,
         tool_choice: Literal["none", "auto"] | ToolCallSpecParam | None = None,
-        addons: Addon | None = None,
         temperature: float | None = None,
         top_p: float | None = None,
         n: int | None = None,
@@ -90,7 +88,6 @@ def create(
         | None = None,
         tools: list[ToolParam] | None = None,
         tool_choice: Literal["none", "auto"] | ToolCallSpecParam | None = None,
-        addons: Addon | None = None,
         temperature: float | None = None,
         top_p: float | None = None,
         n: int | None = None,
@@ -125,7 +122,6 @@ def create(
         | None = None,
         tools: list[ToolParam] | None = None,
         tool_choice: Literal["none", "auto"] | ToolCallSpecParam | None = None,
-        addons: Addon | None = None,
         temperature: float | None = None,
         top_p: float | None = None,
         n: int | None = None,
@@ -169,7 +165,6 @@ def create(
                 "tools": tools,
                 "top_p": top_p,
                 "user": user,
-                "addons": addons,
                 "max_prompt_tokens": max_prompt_tokens,
                 "custom_fields": custom_fields,
                 "logprobs": logprobs,
@@ -224,7 +219,6 @@ async def create(
         | None = None,
         tools: list[ToolParam] | None = None,
         tool_choice: Literal["none", "auto"] | ToolCallSpecParam | None = None,
-        addons: Addon | None = None,
         temperature: float | None = None,
         top_p: float | None = None,
         n: int | None = None,
@@ -258,7 +252,6 @@ async def create(
         | None = None,
         tools: list[ToolParam] | None = None,
         tool_choice: Literal["none", "auto"] | ToolCallSpecParam | None = None,
-        addons: Addon | None = None,
         temperature: float | None = None,
         top_p: float | None = None,
         n: int | None = None,
@@ -293,7 +286,6 @@ async def create(
         | None = None,
         tools: list[ToolParam] | None = None,
         tool_choice: Literal["none", "auto"] | ToolCallSpecParam | None = None,
-        addons: Addon | None = None,
         temperature: float | None = None,
         top_p: float | None = None,
         n: int | None = None,
@@ -337,7 +329,6 @@ async def create(
                 "tools": tools,
                 "top_p": top_p,
                 "user": user,
-                "addons": addons,
                 "max_prompt_tokens": max_prompt_tokens,
                 "custom_fields": custom_fields,
                 "logprobs": logprobs,
diff --git a/aidial_client/types/chat/__init__.py b/aidial_client/types/chat/__init__.py
index 7e5b4a2..e4adccc 100644
--- a/aidial_client/types/chat/__init__.py
+++ b/aidial_client/types/chat/__init__.py
@@ -1,4 +1,3 @@
-from .addon import Addon, ExternalAddon, SystemAddon
 from .function import FunctionCallSpecParam, FunctionParam
 from .request import ChatCompletionRequest
 from .request_param import (
@@ -13,9 +12,6 @@
 
 __all__ = [
     "ChatCompletionRequest",
-    "Addon",
-    "SystemAddon",
-    "ExternalAddon",
     "FunctionParam",
     "FunctionCallSpecParam",
     "ToolParam",
diff --git a/aidial_client/types/chat/addon.py b/aidial_client/types/chat/addon.py
deleted file mode 100644
index 7d1e290..0000000
--- a/aidial_client/types/chat/addon.py
+++ /dev/null
@@ -1,15 +0,0 @@
-from typing_extensions import TypedDict
-
-
-class ExternalAddon(TypedDict):
-    # The URL for accessing the OpenAI Plugin Schema.
-    # The system object used for converting the Addon name to the Addon link.
-    url: str
-
-
-class SystemAddon(TypedDict):
-    # The name of the system Addon.
-    name: str
-
-
-Addon = ExternalAddon | SystemAddon
diff --git a/aidial_client/types/chat/legacy/chat_completion.py b/aidial_client/types/chat/legacy/chat_completion.py
index bc12b9e..b42af90 100644
--- a/aidial_client/types/chat/legacy/chat_completion.py
+++ b/aidial_client/types/chat/legacy/chat_completion.py
@@ -80,11 +80,6 @@ class Message(ExtraForbidModel):
     function_call: FunctionCall | None = None
 
 
-class Addon(ExtraForbidModel):
-    name: StrictStr | None = None
-    url: StrictStr | None = None
-
-
 class Function(ExtraForbidModel):
     name: StrictStr
     description: StrictStr | None = None
@@ -162,6 +157,5 @@ class ChatCompletionRequestCustomFields(ExtraForbidModel):
 
 
 class ChatCompletionRequest(AzureChatCompletionRequest):
-    addons: list[Addon] | None = None
     max_prompt_tokens: PositiveInt | None = None
     custom_fields: ChatCompletionRequestCustomFields | None = None
diff --git a/aidial_client/types/chat/request.py b/aidial_client/types/chat/request.py
index d8bc743..139d5f0 100644
--- a/aidial_client/types/chat/request.py
+++ b/aidial_client/types/chat/request.py
@@ -2,7 +2,6 @@
 
 from typing_extensions import TypedDict
 
-from aidial_client.types.chat.addon import Addon
 from aidial_client.types.chat.function import (
     FunctionCallSpecParam,
     FunctionParam,
@@ -37,6 +36,5 @@ class ChatCompletionRequest(TypedDict, total=False):
     tool_choice: Literal["none", "auto"] | ToolCallSpecParam | None
     functions: list[FunctionParam] | None
     function_call: Literal["none", "auto"] | FunctionCallSpecParam | None
-    addons: Addon | None
     max_prompt_tokens: Literal["infinity"] | int | None
     custom_fields: ChatCompletionRequestCustomFields | None