diff --git a/custom-words.txt b/custom-words.txt
index 76a7eb6457f1..aae0e0c8cbec 100644
--- a/custom-words.txt
+++ b/custom-words.txt
@@ -504,6 +504,8 @@ dacl
 DaemonSet
 dailyforecast
 dailyhistorical
+DALL-E
+dalle
 dapr
 darkgrey
 Darussalam
diff --git a/specification/cognitiveservices/data-plane/AzureOpenAI/authoring/preview/2023-04-15-preview/examples/delete_operation.json b/specification/cognitiveservices/data-plane/AzureOpenAI/authoring/preview/2023-04-15-preview/examples/delete_operation.json
new file mode 100644
index 000000000000..1576fa8cfe9b
--- /dev/null
+++ b/specification/cognitiveservices/data-plane/AzureOpenAI/authoring/preview/2023-04-15-preview/examples/delete_operation.json
@@ -0,0 +1,15 @@
+{
+  "parameters": {
+    "endpoint": "https://aoairesource.openai.azure.com",
+    "Api-Key": "{api key}",
+    "api-version": "2023-04-15-preview",
+    "operation-id": "f508bcf2-e651-4b4b-85a7-58ad77981ffa"
+  },
+  "responses": {
+    "204": {
+      "headers": {
+        "x-ms-request-id": "29fd3fe5-ab2f-44e0-aefa-0dfe9bd1c03f"
+      }
+    }
+  }
+}
diff --git a/specification/cognitiveservices/data-plane/AzureOpenAI/authoring/preview/2023-04-15-preview/examples/get_operation.json b/specification/cognitiveservices/data-plane/AzureOpenAI/authoring/preview/2023-04-15-preview/examples/get_operation.json
new file mode 100644
index 000000000000..d6e4374e144e
--- /dev/null
+++ b/specification/cognitiveservices/data-plane/AzureOpenAI/authoring/preview/2023-04-15-preview/examples/get_operation.json
@@ -0,0 +1,29 @@
+{
+  "parameters": {
+    "endpoint": "https://aoairesource.openai.azure.com",
+    "Api-Key": "{api key}",
+    "api-version": "2023-04-15-preview",
+    "operation-id": "f508bcf2-e651-4b4b-85a7-58ad77981ffa"
+  },
+  "responses": {
+    "200": {
+      "headers": {
+        "x-ms-request-id": "29fd3fe5-ab2f-44e0-aefa-0dfe9bd1c03f"
+      },
+      "body": {
+        "created": 1679320850,
+        "result": {
+          "data": [
+            {
+              "url": "https://aoairesource.blob.core.windows.net/private/images?SAS-token"
+            }
+          ]
+        },
+        "expires": 1679407255,
+        "id": "41dc2981-bf72-492a-b4fe-7eed680a1681",
+        "last_action": 1679320850,
+        "status": "succeeded"
+      }
+    }
+  }
+}
diff --git a/specification/cognitiveservices/data-plane/AzureOpenAI/authoring/preview/2023-04-15-preview/examples/post_images_generate.json b/specification/cognitiveservices/data-plane/AzureOpenAI/authoring/preview/2023-04-15-preview/examples/post_images_generate.json
new file mode 100644
index 000000000000..fe614f166564
--- /dev/null
+++ b/specification/cognitiveservices/data-plane/AzureOpenAI/authoring/preview/2023-04-15-preview/examples/post_images_generate.json
@@ -0,0 +1,25 @@
+{
+  "parameters": {
+    "endpoint": "https://aoairesource.openai.azure.com",
+    "Api-Key": "{api key}",
+    "api-version": "2023-04-15-preview",
+    "body": {
+      "prompt": "An avocado chair",
+      "size": "512x512",
+      "n": 3
+    },
+    "content-Type": "application/json"
+  },
+  "responses": {
+    "202": {
+      "headers": {
+        "operation-location": "https://aoairesource.openai.azure.com/openai/dalle/operations/images/f508bcf2-e651-4b4b-85a7-58ad77981ffa?api-version=2023-04-15-preview",
+        "x-ms-request-id": "29fd3fe5-ab2f-44e0-aefa-0dfe9bd1c03f"
+      },
+      "body": {
+        "id": "f508bcf2-e651-4b4b-85a7-58ad77981ffa",
+        "status": "notStarted"
+      }
+    }
+  }
+}
diff --git a/specification/cognitiveservices/data-plane/AzureOpenAI/authoring/preview/2023-04-15-preview/images.json b/specification/cognitiveservices/data-plane/AzureOpenAI/authoring/preview/2023-04-15-preview/images.json
new file mode 100644
index 000000000000..532b75a850cf
--- /dev/null
+++ b/specification/cognitiveservices/data-plane/AzureOpenAI/authoring/preview/2023-04-15-preview/images.json
@@ -0,0 +1,557 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "title": "Azure OpenAI DALL-E API version 2023-04-15-preview",
+    "description": "Cognitive Services API to support OpenAI DALL-E",
+    "version": "2023-04-15-preview"
+  },
+  "paths": {
+    "/images/generate": {
+      "post": {
+        "summary": "Generates a batch of images from a text caption",
+        "operationId": "Images_Generate",
+        "consumes": [
+          "application/json"
+        ],
+        "produces": [
+          "application/json"
+        ],
+        "parameters": [
+          {
+            "$ref": "#/parameters/apiVersionQueryParameter"
+          },
+          {
+            "in": "header",
+            "name": "Operation-Id",
+            "description": "ID of the status monitor for the operation. If the Operation-Id header matches an existing operation and the request is not identical to the prior request, it will fail with a 400 Bad Request.",
+            "type": "string"
+          },
+          {
+            "in": "body",
+            "name": "body",
+            "description": "The specification of the images that should be generated.",
+            "required": true,
+            "schema": {
+              "$ref": "#/definitions/GenerateImagesCreation"
+            }
+          }
+        ],
+        "responses": {
+          "202": {
+            "description": "Created",
+            "headers": {
+              "operation-location": {
+                "type": "string",
+                "format": "url",
+                "description": "URL to poll for the operation result."
+              },
+              "x-ms-request-id": {
+                "type": "string",
+                "format": "uuid",
+                "description": "Service generated correlation id identifying the request, in the form of a GUID."
+              }
+            },
+            "schema": {
+              "$ref": "#/definitions/GenerateImagesResponse"
+            }
+          },
+          "default": {
+            "description": "An error occurred.",
+            "headers": {
+              "x-ms-error-code": {
+                "type": "string",
+                "description": "The error code indicating what went wrong."
+              },
+              "x-ms-request-id": {
+                "type": "string",
+                "format": "uuid",
+                "description": "Service generated correlation id identifying the request, in the form of a GUID."
+              }
+            },
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
+          }
+        },
+        "x-ms-long-running-operation": true,
+        "x-ms-long-running-operation-options": {
+          "final-state-via": "azure-async-operation"
+        },
+        "x-ms-examples": {
+          "Creating an image generation operation.": {
+            "$ref": "./examples/post_images_generate.json"
+          }
+        }
+      }
+    },
+    "/operations/images/{operation-id}": {
+      "get": {
+        "summary": "Returns the status of the operation",
+        "operationId": "Operations_Get",
+        "produces": [
+          "application/json"
+        ],
+        "parameters": [
+          {
+            "$ref": "#/parameters/apiVersionQueryParameter"
+          },
+          {
+            "in": "path",
+            "name": "operation-id",
+            "required": true,
+            "type": "string",
+            "format": "uuid",
+            "description": "The id of the operation"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "headers": {
+              "retry-after": {
+                "type": "integer",
+                "format": "int32",
+                "description": "Indicates the number of seconds that the client should wait before executing another GET request if the operation did not terminate yet."
+              },
+              "x-ms-request-id": {
+                "type": "string",
+                "format": "uuid",
+                "description": "Service generated correlation id identifying the request, in the form of a GUID."
+              }
+            },
+            "schema": {
+              "$ref": "#/definitions/OperationResponse"
+            }
+          },
+          "default": {
+            "description": "An error occurred.",
+            "headers": {
+              "x-ms-error-code": {
+                "type": "string",
+                "description": "The error code indicating what went wrong."
+              },
+              "x-ms-request-id": {
+                "type": "string",
+                "format": "uuid",
+                "description": "Service generated correlation id identifying the request, in the form of a GUID."
+              }
+            },
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
+          }
+        },
+        "x-ms-examples": {
+          "Getting the result of a specific operation.": {
+            "$ref": "./examples/get_operation.json"
+          }
+        }
+      },
+      "delete": {
+        "summary": "Deletes an operation (if in terminal state) and all generated and user provided images associated with the operation.",
+        "operationId": "Operations_Delete",
+        "parameters": [
+          {
+            "$ref": "#/parameters/apiVersionQueryParameter"
+          },
+          {
+            "in": "path",
+            "name": "operation-id",
+            "required": true,
+            "type": "string",
+            "format": "uuid",
+            "description": "The id of the operation"
+          }
+        ],
+        "responses": {
+          "204": {
+            "description": "NoContent",
+            "headers": {
+              "x-ms-request-id": {
+                "type": "string",
+                "format": "uuid",
+                "description": "Service generated correlation id identifying the request, in the form of a GUID."
+              }
+            }
+          },
+          "default": {
+            "description": "An error occurred.",
+            "headers": {
+              "x-ms-error-code": {
+                "type": "string",
+                "description": "The error code indicating what went wrong."
+              },
+              "x-ms-request-id": {
+                "type": "string",
+                "format": "uuid",
+                "description": "Service generated correlation id identifying the request, in the form of a GUID."
+              }
+            },
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
+          }
+        },
+        "x-ms-examples": {
+          "Deleting a specific operation.": {
+            "$ref": "./examples/delete_operation.json"
+          }
+        }
+      }
+    }
+  },
+  "definitions": {
+    "Status": {
+      "title": "State",
+      "description": "The status of the operation.",
+      "enum": [
+        "notStarted",
+        "running",
+        "succeeded",
+        "canceled",
+        "failed"
+      ],
+      "type": "string",
+      "readOnly": true,
+      "x-ms-enum": {
+        "name": "Status",
+        "modelAsString": true,
+        "values": [
+          {
+            "value": "notStarted",
+            "description": "The operation was created and is not queued to be processed in the future."
+          },
+          {
+            "value": "running",
+            "description": "The operation has started to be processed."
+          },
+          {
+            "value": "succeeded",
+            "description": "The operation has successfully be processed and is ready for consumption."
+          },
+          {
+            "value": "canceled",
+            "description": "The operation has been canceled and is incomplete."
+          },
+          {
+            "value": "failed",
+            "description": "The operation has completed processing with a failure and cannot be further consumed."
+          }
+        ]
+      }
+    },
+    "Error": {
+      "title": "Error",
+      "description": "Error content as defined in the Microsoft REST guidelines\r\n(https://github.com/microsoft/api-guidelines/blob/vNext/Guidelines.md#7102-error-condition-responses).",
+      "type": "object",
+      "properties": {
+        "message": {
+          "description": "The message of this error.",
+          "minLength": 1,
+          "type": "string"
+        },
+        "code": {
+          "$ref": "#/definitions/ErrorCode"
+        }
+      },
+      "required": [
+        "message",
+        "code"
+      ]
+    },
+    "ErrorCode": {
+      "title": "ErrorCode",
+      "description": "Error codes as defined in the Microsoft REST guidelines\r\n(https://github.com/microsoft/api-guidelines/blob/vNext/Guidelines.md#7102-error-condition-responses).",
+      "enum": [
+        "badRequest",
+        "internal",
+        "tooManyRequests",
+        "unauthorized",
+        "notFound",
+        "operationNotInTerminalState"
+      ],
+      "type": "string",
+      "x-ms-enum": {
+        "name": "ErrorCode",
+        "modelAsString": true,
+        "values": [
+          {
+            "value": "badRequest",
+            "description": "The request data is invalid for this operation."
+          },
+          {
+            "value": "internal",
+            "description": "Internal error. Please retry."
+          },
+          {
+            "value": "tooManyRequests",
+            "description": "Too many requests. Please retry later."
+          },
+          {
+            "value": "unauthorized",
+            "description": "The current user/api key is not authorized for the operation."
+          },
+          {
+            "value": "notFound",
+            "description": "The resource is not found."
+          },
+          {
+            "value": "operationNotInTerminalState",
+            "description": "The operation cannot be executed in the current resource's state."
+          }
+        ]
+      }
+    },
+    "ErrorResponse": {
+      "title": "ErrorResponse",
+      "description": "Error response as defined in the Microsoft REST guidelines\r\n(https://github.com/microsoft/api-guidelines/blob/vNext/Guidelines.md#7102-error-condition-responses).",
+      "required": [
+        "error"
+      ],
+      "type": "object",
+      "properties": {
+        "error": {
+          "$ref": "#/definitions/Error"
+        }
+      }
+    },
+    "ImageErrorCode": {
+      "title": "ErrorCode",
+      "description": "Error codes for image errors.",
+      "enum": [
+        "contentFilter",
+        "blockedImages"
+      ],
+      "type": "string",
+      "x-ms-enum": {
+        "name": "ImageErrorCode",
+        "modelAsString": true,
+        "values": [
+          {
+            "value": "contentFilter",
+            "description": "Generated image was filtered as a result of our safety system."
+          },
+          {
+            "value": "blockedImages",
+            "description": "The user provided images were blocked by our safety system."
+          }
+        ]
+      }
+    },
+    "ImageError": {
+      "title": "Error",
+      "description": "The error when an image could not be generated.",
+      "type": "object",
+      "properties": {
+        "message": {
+          "description": "The message of this error.",
+          "minLength": 1,
+          "type": "string"
+        },
+        "code": {
+          "$ref": "#/definitions/ImageErrorCode"
+        }
+      },
+      "required": [
+        "message",
+        "code"
+      ]
+    },
+    "ImageResult": {
+      "type": "object",
+      "description": "The image url if successful, and an error otherwise.",
+      "properties": {
+        "url": {
+          "type": "string",
+          "format": "url",
+          "description": "The URL that provides temporary access to download the generated image."
+        },
+        "error": {
+          "$ref": "#/definitions/ImageError"
+        }
+      }
+    },
+    "ImageResults": {
+      "title": "OperationResult",
+      "description": "The result data of the operation, if successful",
+      "type": "array",
+      "items": {
+        "$ref": "#/definitions/ImageResult"
+      }
+    },
+    "OperationResponse": {
+      "title": "OperationResponse",
+      "description": "The operation response containing the id and the status of the operation. If successful, it contains data with the generated images and an error otherwise.",
+      "type": "object",
+      "properties": {
+        "id": {
+          "format": "uuid",
+          "description": "The ID of the operation.",
+          "type": "string"
+        },
+        "created": {
+          "format": "unixtime",
+          "description": "A timestamp when this job or item was created (in unix epochs).",
+          "type": "integer"
+        },
+        "last_action": {
+          "format": "unixtime",
+          "description": "A timestamp when this job or item was modified last (in unix epochs).",
+          "type": "integer"
+        },
+        "expires": {
+          "format": "unixtime",
+          "description": "A timestamp when this operation and its associated images expire and will be deleted (in unix epochs).",
+          "type": "integer"
+        },
+        "result": {
+          "type": "object",
+          "description": "The result of the operation if the operation succeeded.",
+          "properties": {
+            "data": {
+              "$ref": "#/definitions/ImageResults"
+            }
+          },
+          "required": [
+            "data"
+          ]
+        },
+        "status": {
+          "$ref": "#/definitions/Status"
+        },
+        "error": {
+          "$ref": "#/definitions/Error"
+        }
+      },
+      "required": [
+        "id",
+        "status",
+        "created",
+        "last_action"
+      ]
+    },
+    "Size": {
+      "title": "Size",
+      "description": "The desired size of the generated images. Must be one of 256x256, 512x512, or 1024x1024.",
+      "enum": [
+        "256x256",
+        "512x512",
+        "1024x1024"
+      ],
+      "type": "string",
+      "default": "1024x1024",
+      "x-ms-enum": {
+        "name": "Size",
+        "modelAsString": true,
+        "values": [
+          {
+            "value": "256x256",
+            "description": "The desired size of the generated image is 256x256 pixels."
+          },
+          {
+            "value": "512x512",
+            "description": "The desired size of the generated image is 512x512 pixels."
+          },
+          {
+            "value": "1024x1024",
+            "description": "The desired size of the generated image is 1024x1024 pixels."
+          }
+        ]
+      }
+    },
+    "GenerateImagesCreation": {
+      "title": "GenerateImagesCreation",
+      "description": "Defines the request to create an operation to generate images.",
+      "type": "object",
+      "properties": {
+        "prompt": {
+          "description": "A text description of the desired image(s).",
+          "type": "string",
+          "minLength": 1
+        },
+        "n": {
+          "description": "The number of images to generate.",
+          "type": "integer",
+          "format": "int32",
+          "minimum": 1,
+          "default": 1
+        },
+        "size": {
+          "$ref": "#/definitions/Size"
+        },
+        "user": {
+          "description": "A unique identifier representing your end-user, which can help to monitor and detect abuse.",
+          "type": "string"
+        }
+      },
+      "required": [
+        "prompt"
+      ]
+    },
+    "GenerateImagesResponse": {
+      "title": "GenerateImagesResponse",
+      "description": "Defines response after creating an operation to generate images. It contains the status and the id of the operation.",
+      "type": "object",
+      "properties": {
+        "status": {
+          "$ref": "#/definitions/Status"
+        },
+        "id": {
+          "type": "string",
+          "format": "uuid",
+          "description": " The Id of the asynchronous operation that can be used to query its status later."
+        }
+      },
+      "required": [
+        "id",
+        "status"
+      ]
+    }
+  },
+  "parameters": {
+    "endpoint": {
+      "in": "path",
+      "name": "endpoint",
+      "description": "Supported Cognitive Services endpoints (protocol and hostname, for example: https://aoairesource.openai.azure.com. Replace \"aoairesource\" with your Azure OpenAI account name).",
+      "required": true,
+      "type": "string",
+      "format": "url",
+      "x-ms-skip-url-encoding": true,
+      "x-ms-parameter-location": "client"
+    },
+    "apiVersionQueryParameter": {
+      "in": "query",
+      "name": "api-version",
+      "description": "The requested API version.",
+      "required": true,
+      "type": "string",
+      "x-ms-client-default": "2023-04-15-preview",
+      "x-ms-parameter-location": "client"
+    }
+  },
+  "securityDefinitions": {
+    "api-key": {
+      "type": "apiKey",
+      "name": "Api-Key",
+      "in": "header",
+      "description": "Provide your Cognitive Services Azure OpenAI account key here."
+    }
+  },
+  "security": [
+    {
+      "api-key": []
+    }
+  ],
+  "schemes": [
+    "https"
+  ],
+  "x-ms-parameterized-host": {
+    "hostTemplate": "{endpoint}/openai",
+    "useSchemePrefix": false,
+    "parameters": [
+      {
+        "$ref": "#/parameters/endpoint"
+      }
+    ]
+  }
+}
diff --git a/specification/cognitiveservices/data-plane/AzureOpenAI/authoring/readme.md b/specification/cognitiveservices/data-plane/AzureOpenAI/authoring/readme.md
index 963fd25593ba..5dd51fa7c9fb 100644
--- a/specification/cognitiveservices/data-plane/AzureOpenAI/authoring/readme.md
+++ b/specification/cognitiveservices/data-plane/AzureOpenAI/authoring/readme.md
@@ -85,3 +85,21 @@ directive:
   - suppress: IntegerTypeMustHaveFormat
     reason: API stewardship board recommend to use format "unixtime" which is not supported by linter at the moment. 
 ```
+
+## AzureOpenAI 2023-04-15-preview
+These settings apply only when `api-version=2023-04-15-preview` is specified in the query parameters of the request.
+
+``` yaml $(tag) == 'release_2023_04_15_preview'
+input-file: preview/2023-04-15-preview/images.json
+```
+
+AutoRest-Linter Suppressions
+
+``` yaml
+# Ignore autorest-linter issues that cannot be resolved without breaking compatibility to existing openai api
+directive: 
+  - suppress: ValidFormats
+    reason: API stewardship board recommend to use format "unixtime" which is not supported by linter at the moment. 
+  - suppress: IntegerTypeMustHaveFormat
+    reason: API stewardship board recommend to use format "unixtime" which is not supported by linter at the moment. 
+```
\ No newline at end of file