diff --git a/api.md b/api.md
index 45ddce7e..43ecede8 100644
--- a/api.md
+++ b/api.md
@@ -29,6 +29,10 @@ Types:
 - <code><a href="./src/resources/messages.ts">TextBlockParam</a></code>
 - <code><a href="./src/resources/messages.ts">TextDelta</a></code>
 - <code><a href="./src/resources/messages.ts">Tool</a></code>
+- <code><a href="./src/resources/messages.ts">ToolChoice</a></code>
+- <code><a href="./src/resources/messages.ts">ToolChoiceAny</a></code>
+- <code><a href="./src/resources/messages.ts">ToolChoiceAuto</a></code>
+- <code><a href="./src/resources/messages.ts">ToolChoiceTool</a></code>
 - <code><a href="./src/resources/messages.ts">ToolResultBlockParam</a></code>
 - <code><a href="./src/resources/messages.ts">ToolUseBlock</a></code>
 - <code><a href="./src/resources/messages.ts">ToolUseBlockParam</a></code>
diff --git a/src/index.ts b/src/index.ts
index 9fee1352..9f16770d 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -282,6 +282,10 @@ export namespace Anthropic {
   export import TextBlockParam = API.TextBlockParam;
   export import TextDelta = API.TextDelta;
   export import Tool = API.Tool;
+  export import ToolChoice = API.ToolChoice;
+  export import ToolChoiceAny = API.ToolChoiceAny;
+  export import ToolChoiceAuto = API.ToolChoiceAuto;
+  export import ToolChoiceTool = API.ToolChoiceTool;
   export import ToolResultBlockParam = API.ToolResultBlockParam;
   export import ToolUseBlock = API.ToolUseBlock;
   export import ToolUseBlockParam = API.ToolUseBlockParam;
diff --git a/src/resources/beta/prompt-caching/messages.ts b/src/resources/beta/prompt-caching/messages.ts
index 4668d11d..2febad1e 100644
--- a/src/resources/beta/prompt-caching/messages.ts
+++ b/src/resources/beta/prompt-caching/messages.ts
@@ -461,10 +461,7 @@ export interface MessageCreateParamsBase {
    * How the model should use the provided tools. The model can use a specific tool,
    * any available tool, or decide by itself.
    */
-  tool_choice?:
-    | MessageCreateParams.ToolChoiceAuto
-    | MessageCreateParams.ToolChoiceAny
-    | MessageCreateParams.ToolChoiceTool;
+  tool_choice?: MessagesAPI.ToolChoice;
 
   /**
    * Definitions of tools that the model may use.
@@ -579,54 +576,19 @@ export namespace MessageCreateParams {
   }
 
   /**
-   * The model will automatically decide whether to use tools.
+   * @deprecated use `Anthropic.Messages.ToolChoiceAuto` instead
    */
-  export interface ToolChoiceAuto {
-    type: 'auto';
-
-    /**
-     * Whether to disable parallel tool use.
-     *
-     * Defaults to `false`. If set to `true`, the model will output at most one tool
-     * use.
-     */
-    disable_parallel_tool_use?: boolean;
-  }
+  export type ToolChoiceAuto = MessagesAPI.ToolChoiceAuto;
 
   /**
-   * The model will use any available tools.
+   * @deprecated use `Anthropic.Messages.ToolChoiceAny` instead
    */
-  export interface ToolChoiceAny {
-    type: 'any';
-
-    /**
-     * Whether to disable parallel tool use.
-     *
-     * Defaults to `false`. If set to `true`, the model will output exactly one tool
-     * use.
-     */
-    disable_parallel_tool_use?: boolean;
-  }
+  export type ToolChoiceAny = MessagesAPI.ToolChoiceAny;
 
   /**
-   * The model will use the specified tool with `tool_choice.name`.
+   * @deprecated use `Anthropic.Messages.ToolChoiceTool` instead
    */
-  export interface ToolChoiceTool {
-    /**
-     * The name of the tool to use.
-     */
-    name: string;
-
-    type: 'tool';
-
-    /**
-     * Whether to disable parallel tool use.
-     *
-     * Defaults to `false`. If set to `true`, the model will output exactly one tool
-     * use.
-     */
-    disable_parallel_tool_use?: boolean;
-  }
+  export type ToolChoiceTool = MessagesAPI.ToolChoiceTool;
 
   export type MessageCreateParamsNonStreaming = PromptCachingMessagesAPI.MessageCreateParamsNonStreaming;
   export type MessageCreateParamsStreaming = PromptCachingMessagesAPI.MessageCreateParamsStreaming;
diff --git a/src/resources/index.ts b/src/resources/index.ts
index ec588e8c..3775f5c4 100644
--- a/src/resources/index.ts
+++ b/src/resources/index.ts
@@ -35,6 +35,10 @@ export {
   TextBlockParam,
   TextDelta,
   Tool,
+  ToolChoice,
+  ToolChoiceAny,
+  ToolChoiceAuto,
+  ToolChoiceTool,
   ToolResultBlockParam,
   ToolUseBlock,
   ToolUseBlockParam,
diff --git a/src/resources/messages.ts b/src/resources/messages.ts
index 9c5e46d7..fa0bdc84 100644
--- a/src/resources/messages.ts
+++ b/src/resources/messages.ts
@@ -365,6 +365,62 @@ export namespace Tool {
   }
 }
 
+/**
+ * How the model should use the provided tools. The model can use a specific tool,
+ * any available tool, or decide by itself.
+ */
+export type ToolChoice = ToolChoiceAuto | ToolChoiceAny | ToolChoiceTool;
+
+/**
+ * The model will use any available tools.
+ */
+export interface ToolChoiceAny {
+  type: 'any';
+
+  /**
+   * Whether to disable parallel tool use.
+   *
+   * Defaults to `false`. If set to `true`, the model will output exactly one tool
+   * use.
+   */
+  disable_parallel_tool_use?: boolean;
+}
+
+/**
+ * The model will automatically decide whether to use tools.
+ */
+export interface ToolChoiceAuto {
+  type: 'auto';
+
+  /**
+   * Whether to disable parallel tool use.
+   *
+   * Defaults to `false`. If set to `true`, the model will output at most one tool
+   * use.
+   */
+  disable_parallel_tool_use?: boolean;
+}
+
+/**
+ * The model will use the specified tool with `tool_choice.name`.
+ */
+export interface ToolChoiceTool {
+  /**
+   * The name of the tool to use.
+   */
+  name: string;
+
+  type: 'tool';
+
+  /**
+   * Whether to disable parallel tool use.
+   *
+   * Defaults to `false`. If set to `true`, the model will output exactly one tool
+   * use.
+   */
+  disable_parallel_tool_use?: boolean;
+}
+
 export interface ToolResultBlockParam {
   tool_use_id: string;
 
@@ -568,10 +624,7 @@ export interface MessageCreateParamsBase {
    * How the model should use the provided tools. The model can use a specific tool,
    * any available tool, or decide by itself.
    */
-  tool_choice?:
-    | MessageCreateParams.ToolChoiceAuto
-    | MessageCreateParams.ToolChoiceAny
-    | MessageCreateParams.ToolChoiceTool;
+  tool_choice?: ToolChoice;
 
   /**
    * Definitions of tools that the model may use.
@@ -686,54 +739,19 @@ export namespace MessageCreateParams {
   }
 
   /**
-   * The model will automatically decide whether to use tools.
+   * @deprecated use `Anthropic.Messages.ToolChoiceAuto` instead
    */
-  export interface ToolChoiceAuto {
-    type: 'auto';
-
-    /**
-     * Whether to disable parallel tool use.
-     *
-     * Defaults to `false`. If set to `true`, the model will output at most one tool
-     * use.
-     */
-    disable_parallel_tool_use?: boolean;
-  }
+  export type ToolChoiceAuto = MessagesAPI.ToolChoiceAuto;
 
   /**
-   * The model will use any available tools.
+   * @deprecated use `Anthropic.Messages.ToolChoiceAny` instead
    */
-  export interface ToolChoiceAny {
-    type: 'any';
-
-    /**
-     * Whether to disable parallel tool use.
-     *
-     * Defaults to `false`. If set to `true`, the model will output exactly one tool
-     * use.
-     */
-    disable_parallel_tool_use?: boolean;
-  }
+  export type ToolChoiceAny = MessagesAPI.ToolChoiceAny;
 
   /**
-   * The model will use the specified tool with `tool_choice.name`.
+   * @deprecated use `Anthropic.Messages.ToolChoiceTool` instead
    */
-  export interface ToolChoiceTool {
-    /**
-     * The name of the tool to use.
-     */
-    name: string;
-
-    type: 'tool';
-
-    /**
-     * Whether to disable parallel tool use.
-     *
-     * Defaults to `false`. If set to `true`, the model will output exactly one tool
-     * use.
-     */
-    disable_parallel_tool_use?: boolean;
-  }
+  export type ToolChoiceTool = MessagesAPI.ToolChoiceTool;
 
   export type MessageCreateParamsNonStreaming = MessagesAPI.MessageCreateParamsNonStreaming;
   export type MessageCreateParamsStreaming = MessagesAPI.MessageCreateParamsStreaming;
@@ -788,6 +806,10 @@ export namespace Messages {
   export import TextBlockParam = MessagesAPI.TextBlockParam;
   export import TextDelta = MessagesAPI.TextDelta;
   export import Tool = MessagesAPI.Tool;
+  export import ToolChoice = MessagesAPI.ToolChoice;
+  export import ToolChoiceAny = MessagesAPI.ToolChoiceAny;
+  export import ToolChoiceAuto = MessagesAPI.ToolChoiceAuto;
+  export import ToolChoiceTool = MessagesAPI.ToolChoiceTool;
   export import ToolResultBlockParam = MessagesAPI.ToolResultBlockParam;
   export import ToolUseBlock = MessagesAPI.ToolUseBlock;
   export import ToolUseBlockParam = MessagesAPI.ToolUseBlockParam;