diff --git a/clients/client-opensearch/src/commands/CreateDomainCommand.ts b/clients/client-opensearch/src/commands/CreateDomainCommand.ts
index 62ee9c48030c..c500c2ae9088 100644
--- a/clients/client-opensearch/src/commands/CreateDomainCommand.ts
+++ b/clients/client-opensearch/src/commands/CreateDomainCommand.ts
@@ -165,6 +165,11 @@ export interface CreateDomainCommandOutput extends CreateDomainResponse, __Metad
  *   SoftwareUpdateOptions: { // SoftwareUpdateOptions
  *     AutoSoftwareUpdateEnabled: true || false,
  *   },
+ *   AIMLOptions: { // AIMLOptionsInput
+ *     NaturalLanguageQueryGenerationOptions: { // NaturalLanguageQueryGenerationOptionsInput
+ *       DesiredState: "ENABLED" || "DISABLED",
+ *     },
+ *   },
  * };
  * const command = new CreateDomainCommand(input);
  * const response = await client.send(command);
@@ -321,6 +326,12 @@ export interface CreateDomainCommandOutput extends CreateDomainResponse, __Metad
  * //         ValueType: "PLAIN_TEXT" || "STRINGIFIED_JSON",
  * //       },
  * //     ],
+ * //     AIMLOptions: { // AIMLOptionsOutput
+ * //       NaturalLanguageQueryGenerationOptions: { // NaturalLanguageQueryGenerationOptionsOutput
+ * //         DesiredState: "ENABLED" || "DISABLED",
+ * //         CurrentState: "NOT_ENABLED" || "ENABLE_COMPLETE" || "ENABLE_IN_PROGRESS" || "ENABLE_FAILED" || "DISABLE_COMPLETE" || "DISABLE_IN_PROGRESS" || "DISABLE_FAILED",
+ * //       },
+ * //     },
  * //   },
  * // };
  *
diff --git a/clients/client-opensearch/src/commands/DeleteDomainCommand.ts b/clients/client-opensearch/src/commands/DeleteDomainCommand.ts
index a4cf9a598dca..9cc928e2c437 100644
--- a/clients/client-opensearch/src/commands/DeleteDomainCommand.ts
+++ b/clients/client-opensearch/src/commands/DeleteDomainCommand.ts
@@ -194,6 +194,12 @@ export interface DeleteDomainCommandOutput extends DeleteDomainResponse, __Metad
  * //         ValueType: "PLAIN_TEXT" || "STRINGIFIED_JSON",
  * //       },
  * //     ],
+ * //     AIMLOptions: { // AIMLOptionsOutput
+ * //       NaturalLanguageQueryGenerationOptions: { // NaturalLanguageQueryGenerationOptionsOutput
+ * //         DesiredState: "ENABLED" || "DISABLED",
+ * //         CurrentState: "NOT_ENABLED" || "ENABLE_COMPLETE" || "ENABLE_IN_PROGRESS" || "ENABLE_FAILED" || "DISABLE_COMPLETE" || "DISABLE_IN_PROGRESS" || "DISABLE_FAILED",
+ * //       },
+ * //     },
  * //   },
  * // };
  *
diff --git a/clients/client-opensearch/src/commands/DescribeDomainCommand.ts b/clients/client-opensearch/src/commands/DescribeDomainCommand.ts
index f30c346d8732..3cf617e81ec4 100644
--- a/clients/client-opensearch/src/commands/DescribeDomainCommand.ts
+++ b/clients/client-opensearch/src/commands/DescribeDomainCommand.ts
@@ -194,6 +194,12 @@ export interface DescribeDomainCommandOutput extends DescribeDomainResponse, __M
  * //         ValueType: "PLAIN_TEXT" || "STRINGIFIED_JSON",
  * //       },
  * //     ],
+ * //     AIMLOptions: { // AIMLOptionsOutput
+ * //       NaturalLanguageQueryGenerationOptions: { // NaturalLanguageQueryGenerationOptionsOutput
+ * //         DesiredState: "ENABLED" || "DISABLED",
+ * //         CurrentState: "NOT_ENABLED" || "ENABLE_COMPLETE" || "ENABLE_IN_PROGRESS" || "ENABLE_FAILED" || "DISABLE_COMPLETE" || "DISABLE_IN_PROGRESS" || "DISABLE_FAILED",
+ * //       },
+ * //     },
  * //   },
  * // };
  *
diff --git a/clients/client-opensearch/src/commands/DescribeDomainConfigCommand.ts b/clients/client-opensearch/src/commands/DescribeDomainConfigCommand.ts
index dba5ca728b9a..1f80fa456987 100644
--- a/clients/client-opensearch/src/commands/DescribeDomainConfigCommand.ts
+++ b/clients/client-opensearch/src/commands/DescribeDomainConfigCommand.ts
@@ -267,6 +267,15 @@ export interface DescribeDomainConfigCommandOutput extends DescribeDomainConfigR
  * //         ValueType: "PLAIN_TEXT" || "STRINGIFIED_JSON",
  * //       },
  * //     ],
+ * //     AIMLOptions: { // AIMLOptionsStatus
+ * //       Options: { // AIMLOptionsOutput
+ * //         NaturalLanguageQueryGenerationOptions: { // NaturalLanguageQueryGenerationOptionsOutput
+ * //           DesiredState: "ENABLED" || "DISABLED",
+ * //           CurrentState: "NOT_ENABLED" || "ENABLE_COMPLETE" || "ENABLE_IN_PROGRESS" || "ENABLE_FAILED" || "DISABLE_COMPLETE" || "DISABLE_IN_PROGRESS" || "DISABLE_FAILED",
+ * //         },
+ * //       },
+ * //       Status: "<OptionStatus>",
+ * //     },
  * //   },
  * // };
  *
diff --git a/clients/client-opensearch/src/commands/DescribeDomainsCommand.ts b/clients/client-opensearch/src/commands/DescribeDomainsCommand.ts
index 26a356542673..d4ac42f62dfe 100644
--- a/clients/client-opensearch/src/commands/DescribeDomainsCommand.ts
+++ b/clients/client-opensearch/src/commands/DescribeDomainsCommand.ts
@@ -197,6 +197,12 @@ export interface DescribeDomainsCommandOutput extends DescribeDomainsResponse, _
  * //           ValueType: "PLAIN_TEXT" || "STRINGIFIED_JSON",
  * //         },
  * //       ],
+ * //       AIMLOptions: { // AIMLOptionsOutput
+ * //         NaturalLanguageQueryGenerationOptions: { // NaturalLanguageQueryGenerationOptionsOutput
+ * //           DesiredState: "ENABLED" || "DISABLED",
+ * //           CurrentState: "NOT_ENABLED" || "ENABLE_COMPLETE" || "ENABLE_IN_PROGRESS" || "ENABLE_FAILED" || "DISABLE_COMPLETE" || "DISABLE_IN_PROGRESS" || "DISABLE_FAILED",
+ * //         },
+ * //       },
  * //     },
  * //   ],
  * // };
diff --git a/clients/client-opensearch/src/commands/DescribeDryRunProgressCommand.ts b/clients/client-opensearch/src/commands/DescribeDryRunProgressCommand.ts
index 3e04666a41c4..633f4c928a65 100644
--- a/clients/client-opensearch/src/commands/DescribeDryRunProgressCommand.ts
+++ b/clients/client-opensearch/src/commands/DescribeDryRunProgressCommand.ts
@@ -208,6 +208,12 @@ export interface DescribeDryRunProgressCommandOutput extends DescribeDryRunProgr
  * //         ValueType: "PLAIN_TEXT" || "STRINGIFIED_JSON",
  * //       },
  * //     ],
+ * //     AIMLOptions: { // AIMLOptionsOutput
+ * //       NaturalLanguageQueryGenerationOptions: { // NaturalLanguageQueryGenerationOptionsOutput
+ * //         DesiredState: "ENABLED" || "DISABLED",
+ * //         CurrentState: "NOT_ENABLED" || "ENABLE_COMPLETE" || "ENABLE_IN_PROGRESS" || "ENABLE_FAILED" || "DISABLE_COMPLETE" || "DISABLE_IN_PROGRESS" || "DISABLE_FAILED",
+ * //       },
+ * //     },
  * //   },
  * //   DryRunResults: { // DryRunResults
  * //     DeploymentType: "STRING_VALUE",
diff --git a/clients/client-opensearch/src/commands/UpdateDomainConfigCommand.ts b/clients/client-opensearch/src/commands/UpdateDomainConfigCommand.ts
index 77e84f5b7b45..6a4c28f77f32 100644
--- a/clients/client-opensearch/src/commands/UpdateDomainConfigCommand.ts
+++ b/clients/client-opensearch/src/commands/UpdateDomainConfigCommand.ts
@@ -166,6 +166,11 @@ export interface UpdateDomainConfigCommandOutput extends UpdateDomainConfigRespo
  *   SoftwareUpdateOptions: { // SoftwareUpdateOptions
  *     AutoSoftwareUpdateEnabled: true || false,
  *   },
+ *   AIMLOptions: { // AIMLOptionsInput
+ *     NaturalLanguageQueryGenerationOptions: { // NaturalLanguageQueryGenerationOptionsInput
+ *       DesiredState: "ENABLED" || "DISABLED",
+ *     },
+ *   },
  * };
  * const command = new UpdateDomainConfigCommand(input);
  * const response = await client.send(command);
@@ -396,6 +401,15 @@ export interface UpdateDomainConfigCommandOutput extends UpdateDomainConfigRespo
  * //         ValueType: "PLAIN_TEXT" || "STRINGIFIED_JSON",
  * //       },
  * //     ],
+ * //     AIMLOptions: { // AIMLOptionsStatus
+ * //       Options: { // AIMLOptionsOutput
+ * //         NaturalLanguageQueryGenerationOptions: { // NaturalLanguageQueryGenerationOptionsOutput
+ * //           DesiredState: "ENABLED" || "DISABLED",
+ * //           CurrentState: "NOT_ENABLED" || "ENABLE_COMPLETE" || "ENABLE_IN_PROGRESS" || "ENABLE_FAILED" || "DISABLE_COMPLETE" || "DISABLE_IN_PROGRESS" || "DISABLE_FAILED",
+ * //         },
+ * //       },
+ * //       Status: "<OptionStatus>",
+ * //     },
  * //   },
  * //   DryRunResults: { // DryRunResults
  * //     DeploymentType: "STRING_VALUE",
diff --git a/clients/client-opensearch/src/models/models_0.ts b/clients/client-opensearch/src/models/models_0.ts
index beeda49e2853..fb85e0354274 100644
--- a/clients/client-opensearch/src/models/models_0.ts
+++ b/clients/client-opensearch/src/models/models_0.ts
@@ -989,6 +989,113 @@ export interface AdvancedSecurityOptionsStatus {
   Status: OptionStatus | undefined;
 }
 
+/**
+ * @public
+ * @enum
+ */
+export const NaturalLanguageQueryGenerationDesiredState = {
+  Disabled: "DISABLED",
+  Enabled: "ENABLED",
+} as const;
+
+/**
+ * @public
+ */
+export type NaturalLanguageQueryGenerationDesiredState =
+  (typeof NaturalLanguageQueryGenerationDesiredState)[keyof typeof NaturalLanguageQueryGenerationDesiredState];
+
+/**
+ * <p>Container for parameters required to enable the natural language query generation feature.</p>
+ * @public
+ */
+export interface NaturalLanguageQueryGenerationOptionsInput {
+  /**
+   * <p>The desired state of the natural language query generation feature. Valid values are ENABLED and DISABLED.</p>
+   * @public
+   */
+  DesiredState?: NaturalLanguageQueryGenerationDesiredState;
+}
+
+/**
+ * <p>Container for parameters required to enable all machine learning features.</p>
+ * @public
+ */
+export interface AIMLOptionsInput {
+  /**
+   * <p>Container for parameters required for natural language query generation on the specified domain.</p>
+   * @public
+   */
+  NaturalLanguageQueryGenerationOptions?: NaturalLanguageQueryGenerationOptionsInput;
+}
+
+/**
+ * @public
+ * @enum
+ */
+export const NaturalLanguageQueryGenerationCurrentState = {
+  DisableComplete: "DISABLE_COMPLETE",
+  DisableFailed: "DISABLE_FAILED",
+  DisableInProgress: "DISABLE_IN_PROGRESS",
+  EnableComplete: "ENABLE_COMPLETE",
+  EnableFailed: "ENABLE_FAILED",
+  EnableInProgress: "ENABLE_IN_PROGRESS",
+  NotEnabled: "NOT_ENABLED",
+} as const;
+
+/**
+ * @public
+ */
+export type NaturalLanguageQueryGenerationCurrentState =
+  (typeof NaturalLanguageQueryGenerationCurrentState)[keyof typeof NaturalLanguageQueryGenerationCurrentState];
+
+/**
+ * <p>Container for parameters representing the state of the natural language query generation feature on the specified domain.</p>
+ * @public
+ */
+export interface NaturalLanguageQueryGenerationOptionsOutput {
+  /**
+   * <p>The desired state of the natural language query generation feature. Valid values are ENABLED and DISABLED.</p>
+   * @public
+   */
+  DesiredState?: NaturalLanguageQueryGenerationDesiredState;
+
+  /**
+   * <p>The current state of the natural language query generation feature, indicating completion, in progress, or failure.</p>
+   * @public
+   */
+  CurrentState?: NaturalLanguageQueryGenerationCurrentState;
+}
+
+/**
+ * <p>Container for parameters representing the state of machine learning features on the specified domain.</p>
+ * @public
+ */
+export interface AIMLOptionsOutput {
+  /**
+   * <p>Container for parameters required for natural language query generation on the specified domain.</p>
+   * @public
+   */
+  NaturalLanguageQueryGenerationOptions?: NaturalLanguageQueryGenerationOptionsOutput;
+}
+
+/**
+ * <p>The status of machine learning options on the specified domain.</p>
+ * @public
+ */
+export interface AIMLOptionsStatus {
+  /**
+   * <p>Machine learning options on the specified domain.</p>
+   * @public
+   */
+  Options?: AIMLOptionsOutput;
+
+  /**
+   * <p>Provides the current status of an entity.</p>
+   * @public
+   */
+  Status?: OptionStatus;
+}
+
 /**
  * <p>Container for the request parameters to the <code>AssociatePackage</code> operation.</p>
  * @public
@@ -2252,6 +2359,12 @@ export interface CreateDomainRequest {
    * @public
    */
   SoftwareUpdateOptions?: SoftwareUpdateOptions;
+
+  /**
+   * <p>Options for all machine learning features for the specified domain.</p>
+   * @public
+   */
+  AIMLOptions?: AIMLOptionsInput;
 }
 
 /**
@@ -2709,6 +2822,12 @@ export interface DomainStatus {
    * @public
    */
   ModifyingProperties?: ModifyingProperties[];
+
+  /**
+   * <p>Container for parameters required to enable all machine learning features.</p>
+   * @public
+   */
+  AIMLOptions?: AIMLOptionsOutput;
 }
 
 /**
@@ -4314,6 +4433,12 @@ export interface DomainConfig {
    * @public
    */
   ModifyingProperties?: ModifyingProperties[];
+
+  /**
+   * <p>Container for parameters required to enable all machine learning features.</p>
+   * @public
+   */
+  AIMLOptions?: AIMLOptionsStatus;
 }
 
 /**
@@ -7330,6 +7455,12 @@ export interface UpdateDomainConfigRequest {
    * @public
    */
   SoftwareUpdateOptions?: SoftwareUpdateOptions;
+
+  /**
+   * <p>Options for all machine learning features for the specified domain.</p>
+   * @public
+   */
+  AIMLOptions?: AIMLOptionsInput;
 }
 
 /**
diff --git a/clients/client-opensearch/src/protocols/Aws_restJson1.ts b/clients/client-opensearch/src/protocols/Aws_restJson1.ts
index 69bd7247f872..248d689f87af 100644
--- a/clients/client-opensearch/src/protocols/Aws_restJson1.ts
+++ b/clients/client-opensearch/src/protocols/Aws_restJson1.ts
@@ -207,6 +207,8 @@ import {
   AdvancedSecurityOptions,
   AdvancedSecurityOptionsInput,
   AdvancedSecurityOptionsStatus,
+  AIMLOptionsInput,
+  AIMLOptionsStatus,
   AutoTune,
   AutoTuneDetails,
   AutoTuneMaintenanceSchedule,
@@ -254,6 +256,7 @@ import {
   LogPublishingOptionsStatus,
   LogType,
   MasterUserOptions,
+  NaturalLanguageQueryGenerationOptionsInput,
   NodeToNodeEncryptionOptions,
   NodeToNodeEncryptionOptionsStatus,
   OffPeakWindow,
@@ -454,6 +457,7 @@ export const se_CreateDomainCommand = async (
   let body: any;
   body = JSON.stringify(
     take(input, {
+      AIMLOptions: (_) => _json(_),
       AccessPolicies: [],
       AdvancedOptions: (_) => _json(_),
       AdvancedSecurityOptions: (_) => _json(_),
@@ -1489,6 +1493,7 @@ export const se_UpdateDomainConfigCommand = async (
   let body: any;
   body = JSON.stringify(
     take(input, {
+      AIMLOptions: (_) => _json(_),
       AccessPolicies: [],
       AdvancedOptions: (_) => _json(_),
       AdvancedSecurityOptions: (_) => _json(_),
@@ -3295,6 +3300,8 @@ const de_ValidationExceptionRes = async (parsedOutput: any, context: __SerdeCont
 
 // se_AdvancedSecurityOptionsInput omitted.
 
+// se_AIMLOptionsInput omitted.
+
 /**
  * serializeAws_restJson1AutoTuneMaintenanceSchedule
  */
@@ -3384,6 +3391,8 @@ const se_AutoTuneOptionsInput = (input: AutoTuneOptionsInput, context: __SerdeCo
 
 // se_MasterUserOptions omitted.
 
+// se_NaturalLanguageQueryGenerationOptionsInput omitted.
+
 // se_NodeToNodeEncryptionOptions omitted.
 
 // se_OffPeakWindow omitted.
@@ -3468,6 +3477,18 @@ const de_AdvancedSecurityOptionsStatus = (output: any, context: __SerdeContext):
   }) as any;
 };
 
+// de_AIMLOptionsOutput omitted.
+
+/**
+ * deserializeAws_restJson1AIMLOptionsStatus
+ */
+const de_AIMLOptionsStatus = (output: any, context: __SerdeContext): AIMLOptionsStatus => {
+  return take(output, {
+    Options: _json,
+    Status: (_: any) => de_OptionStatus(_, context),
+  }) as any;
+};
+
 // de_AuthorizedPrincipal omitted.
 
 // de_AuthorizedPrincipalList omitted.
@@ -3677,6 +3698,7 @@ const de_CognitoOptionsStatus = (output: any, context: __SerdeContext): CognitoO
  */
 const de_DomainConfig = (output: any, context: __SerdeContext): DomainConfig => {
   return take(output, {
+    AIMLOptions: (_: any) => de_AIMLOptionsStatus(_, context),
     AccessPolicies: (_: any) => de_AccessPoliciesStatus(_, context),
     AdvancedOptions: (_: any) => de_AdvancedOptionsStatus(_, context),
     AdvancedSecurityOptions: (_: any) => de_AdvancedSecurityOptionsStatus(_, context),
@@ -3783,6 +3805,7 @@ const de_DomainPackageDetailsList = (output: any, context: __SerdeContext): Doma
  */
 const de_DomainStatus = (output: any, context: __SerdeContext): DomainStatus => {
   return take(output, {
+    AIMLOptions: _json,
     ARN: __expectString,
     AccessPolicies: __expectString,
     AdvancedOptions: _json,
@@ -3924,6 +3947,8 @@ const de_LogPublishingOptionsStatus = (output: any, context: __SerdeContext): Lo
 
 // de_ModifyingPropertiesList omitted.
 
+// de_NaturalLanguageQueryGenerationOptionsOutput omitted.
+
 // de_NodeToNodeEncryptionOptions omitted.
 
 /**
diff --git a/codegen/sdk-codegen/aws-models/opensearch.json b/codegen/sdk-codegen/aws-models/opensearch.json
index 62328b9033ca..1c78832dfc6b 100644
--- a/codegen/sdk-codegen/aws-models/opensearch.json
+++ b/codegen/sdk-codegen/aws-models/opensearch.json
@@ -29,6 +29,51 @@
     ]
   },
   "shapes": {
+    "com.amazonaws.opensearch#AIMLOptionsInput": {
+      "type": "structure",
+      "members": {
+        "NaturalLanguageQueryGenerationOptions": {
+          "target": "com.amazonaws.opensearch#NaturalLanguageQueryGenerationOptionsInput",
+          "traits": {
+            "smithy.api#documentation": "<p>Container for parameters required for natural language query generation on the specified domain.</p>"
+          }
+        }
+      },
+      "traits": {
+        "smithy.api#documentation": "<p>Container for parameters required to enable all machine learning features.</p>"
+      }
+    },
+    "com.amazonaws.opensearch#AIMLOptionsOutput": {
+      "type": "structure",
+      "members": {
+        "NaturalLanguageQueryGenerationOptions": {
+          "target": "com.amazonaws.opensearch#NaturalLanguageQueryGenerationOptionsOutput",
+          "traits": {
+            "smithy.api#documentation": "<p>Container for parameters required for natural language query generation on the specified domain.</p>"
+          }
+        }
+      },
+      "traits": {
+        "smithy.api#documentation": "<p>Container for parameters representing the state of machine learning features on the specified domain.</p>"
+      }
+    },
+    "com.amazonaws.opensearch#AIMLOptionsStatus": {
+      "type": "structure",
+      "members": {
+        "Options": {
+          "target": "com.amazonaws.opensearch#AIMLOptionsOutput",
+          "traits": {
+            "smithy.api#documentation": "<p>Machine learning options on the specified domain.</p>"
+          }
+        },
+        "Status": {
+          "target": "com.amazonaws.opensearch#OptionStatus"
+        }
+      },
+      "traits": {
+        "smithy.api#documentation": "<p>The status of machine learning options on the specified domain.</p>"
+      }
+    },
     "com.amazonaws.opensearch#ARN": {
       "type": "string",
       "traits": {
@@ -3318,6 +3363,12 @@
           "traits": {
             "smithy.api#documentation": "<p>Software update options for the domain.</p>"
           }
+        },
+        "AIMLOptions": {
+          "target": "com.amazonaws.opensearch#AIMLOptionsInput",
+          "traits": {
+            "smithy.api#documentation": "<p>Options for all machine learning features for the specified domain.</p>"
+          }
         }
       },
       "traits": {
@@ -5710,6 +5761,12 @@
           "traits": {
             "smithy.api#documentation": "<p>Information about the domain properties that are currently being modified.</p>"
           }
+        },
+        "AIMLOptions": {
+          "target": "com.amazonaws.opensearch#AIMLOptionsStatus",
+          "traits": {
+            "smithy.api#documentation": "<p>Container for parameters required to enable all machine learning features.</p>"
+          }
         }
       },
       "traits": {
@@ -6386,6 +6443,12 @@
           "traits": {
             "smithy.api#documentation": "<p>Information about the domain properties that are currently being modified.</p>"
           }
+        },
+        "AIMLOptions": {
+          "target": "com.amazonaws.opensearch#AIMLOptionsOutput",
+          "traits": {
+            "smithy.api#documentation": "<p>Container for parameters required to enable all machine learning features.</p>"
+          }
         }
       },
       "traits": {
@@ -9036,6 +9099,104 @@
         "target": "com.amazonaws.opensearch#ModifyingProperties"
       }
     },
+    "com.amazonaws.opensearch#NaturalLanguageQueryGenerationCurrentState": {
+      "type": "enum",
+      "members": {
+        "NotEnabled": {
+          "target": "smithy.api#Unit",
+          "traits": {
+            "smithy.api#enumValue": "NOT_ENABLED"
+          }
+        },
+        "EnableComplete": {
+          "target": "smithy.api#Unit",
+          "traits": {
+            "smithy.api#enumValue": "ENABLE_COMPLETE"
+          }
+        },
+        "EnableInProgress": {
+          "target": "smithy.api#Unit",
+          "traits": {
+            "smithy.api#enumValue": "ENABLE_IN_PROGRESS"
+          }
+        },
+        "EnableFailed": {
+          "target": "smithy.api#Unit",
+          "traits": {
+            "smithy.api#enumValue": "ENABLE_FAILED"
+          }
+        },
+        "DisableComplete": {
+          "target": "smithy.api#Unit",
+          "traits": {
+            "smithy.api#enumValue": "DISABLE_COMPLETE"
+          }
+        },
+        "DisableInProgress": {
+          "target": "smithy.api#Unit",
+          "traits": {
+            "smithy.api#enumValue": "DISABLE_IN_PROGRESS"
+          }
+        },
+        "DisableFailed": {
+          "target": "smithy.api#Unit",
+          "traits": {
+            "smithy.api#enumValue": "DISABLE_FAILED"
+          }
+        }
+      }
+    },
+    "com.amazonaws.opensearch#NaturalLanguageQueryGenerationDesiredState": {
+      "type": "enum",
+      "members": {
+        "Enabled": {
+          "target": "smithy.api#Unit",
+          "traits": {
+            "smithy.api#enumValue": "ENABLED"
+          }
+        },
+        "Disabled": {
+          "target": "smithy.api#Unit",
+          "traits": {
+            "smithy.api#enumValue": "DISABLED"
+          }
+        }
+      }
+    },
+    "com.amazonaws.opensearch#NaturalLanguageQueryGenerationOptionsInput": {
+      "type": "structure",
+      "members": {
+        "DesiredState": {
+          "target": "com.amazonaws.opensearch#NaturalLanguageQueryGenerationDesiredState",
+          "traits": {
+            "smithy.api#documentation": "<p>The desired state of the natural language query generation feature. Valid values are ENABLED and DISABLED.</p>"
+          }
+        }
+      },
+      "traits": {
+        "smithy.api#documentation": "<p>Container for parameters required to enable the natural language query generation feature.</p>"
+      }
+    },
+    "com.amazonaws.opensearch#NaturalLanguageQueryGenerationOptionsOutput": {
+      "type": "structure",
+      "members": {
+        "DesiredState": {
+          "target": "com.amazonaws.opensearch#NaturalLanguageQueryGenerationDesiredState",
+          "traits": {
+            "smithy.api#documentation": "<p>The desired state of the natural language query generation feature. Valid values are ENABLED and DISABLED.</p>"
+          }
+        },
+        "CurrentState": {
+          "target": "com.amazonaws.opensearch#NaturalLanguageQueryGenerationCurrentState",
+          "traits": {
+            "smithy.api#documentation": "<p>The current state of the natural language query generation feature, indicating completion, in progress, or failure.</p>"
+          }
+        }
+      },
+      "traits": {
+        "smithy.api#documentation": "<p>Container for parameters representing the state of the natural language query generation feature on the specified domain.</p>"
+      }
+    },
     "com.amazonaws.opensearch#NextToken": {
       "type": "string",
       "traits": {
@@ -12221,6 +12382,12 @@
           "traits": {
             "smithy.api#documentation": "<p>Service software update options for the domain.</p>"
           }
+        },
+        "AIMLOptions": {
+          "target": "com.amazonaws.opensearch#AIMLOptionsInput",
+          "traits": {
+            "smithy.api#documentation": "<p>Options for all machine learning features for the specified domain.</p>"
+          }
         }
       },
       "traits": {