diff --git a/specification/cognitiveservices/data-plane/LUIS/Runtime/preview/v3.0/LUIS-Runtime.json b/specification/cognitiveservices/data-plane/LUIS/Runtime/preview/v3.0/LUIS-Runtime.json
new file mode 100644
index 000000000000..7b4aff08332b
--- /dev/null
+++ b/specification/cognitiveservices/data-plane/LUIS/Runtime/preview/v3.0/LUIS-Runtime.json
@@ -0,0 +1,531 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "version": "3.0-preview",
+    "title": "LUIS Runtime Client"
+  },
+  "x-ms-parameterized-host": {
+    "hostTemplate": "{Endpoint}/luis/v3.0-preview",
+    "useSchemePrefix": false,
+    "parameters": [
+      {
+        "$ref": "#/parameters/Endpoint"
+      }
+    ]
+  },
+  "securityDefinitions": {
+    "apiKeyHeader": {
+      "type": "apiKey",
+      "name": "Ocp-Apim-Subscription-Key",
+      "in": "header"
+    }
+  },
+  "security": [
+    {
+      "apiKeyHeader": []
+    }
+  ],
+  "paths": {
+    "/apps/{appId}/versions/{versionId}/predict": {
+      "get": {
+        "description": "Gets the predictions for an application version.",
+        "operationId": "Prediction_GetVersionPredictionGET",
+        "parameters": [
+          {
+            "$ref": "#/parameters/AppIdInPath"
+          },
+          {
+            "$ref": "#/parameters/VersionIdInPath"
+          },
+          {
+            "$ref": "#/parameters/Query"
+          },
+          {
+            "$ref": "#/parameters/Verbose"
+          },
+          {
+            "$ref": "#/parameters/ShowAllIntents"
+          },
+          {
+            "$ref": "#/parameters/Log"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "The prediction for the supplied query",
+            "schema": {
+              "$ref": "#/definitions/PredictionResponse"
+            }
+          },
+          "default": {
+            "description": "unexpected error",
+            "schema": {
+              "$ref": "#/definitions/Error"
+            }
+          }
+        },
+        "produces": [
+          "application/json"
+        ],
+        "x-ms-examples": {
+          "Successful Get Version Predictions From Endpoint Via Get request": {
+            "$ref": "./examples/prediction/SuccessfulGetVersionPredictionsFromEndpointViaGetRequest.json"
+          }
+        }
+      },
+      "post": {
+        "description": "Gets the predictions for an application version.",
+        "operationId": "Prediction_GetVersionPrediction",
+        "parameters": [
+          {
+            "$ref": "#/parameters/AppIdInPath"
+          },
+          {
+            "$ref": "#/parameters/VersionIdInPath"
+          },
+          {
+            "$ref": "#/parameters/Verbose"
+          },
+          {
+            "$ref": "#/parameters/ShowAllIntents"
+          },
+          {
+            "$ref": "#/parameters/Log"
+          },
+          {
+            "$ref": "#/parameters/PredictionRequest"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "The prediction for the supplied query",
+            "schema": {
+              "$ref": "#/definitions/PredictionResponse"
+            }
+          },
+          "default": {
+            "description": "unexpected error",
+            "schema": {
+              "$ref": "#/definitions/Error"
+            }
+          }
+        },
+        "produces": [
+          "application/json"
+        ],
+        "x-ms-examples": {
+          "Successful Get Version Predictions From Endpoint Via Post request": {
+            "$ref": "./examples/prediction/SuccessfulGetVersionPredictionsFromEndpointViaPostRequest.json"
+          }
+        }
+      }
+    },
+    "/apps/{appId}/slots/{slotName}/predict": {
+      "get": {
+        "description": "Gets the predictions for an application slot.",
+        "operationId": "Prediction_GetSlotPredictionGET",
+        "parameters": [
+          {
+            "$ref": "#/parameters/AppIdInPath"
+          },
+          {
+            "$ref": "#/parameters/SlotNameInPath"
+          },
+          {
+            "$ref": "#/parameters/Query"
+          },
+          {
+            "$ref": "#/parameters/Verbose"
+          },
+          {
+            "$ref": "#/parameters/ShowAllIntents"
+          },
+          {
+            "$ref": "#/parameters/Log"
+          }
+        ],
+        "produces": [
+          "application/json"
+        ],
+        "responses": {
+          "200": {
+            "description": "The prediction for the supplied query",
+            "schema": {
+              "$ref": "#/definitions/PredictionResponse"
+            }
+          },
+          "default": {
+            "description": "unexpected error",
+            "schema": {
+              "$ref": "#/definitions/Error"
+            }
+          }
+        },
+        "x-ms-examples": {
+          "Successful Get Slot Predictions From Endpoint Via Get request": {
+            "$ref": "./examples/prediction/SuccessfulGetSlotPredictionsFromEndpointViaGetRequest.json"
+          }
+        }
+      },
+      "post": {
+        "description": "Gets the predictions for an application slot.",
+        "operationId": "Prediction_GetSlotPrediction",
+        "parameters": [
+          {
+            "$ref": "#/parameters/AppIdInPath"
+          },
+          {
+            "$ref": "#/parameters/SlotNameInPath"
+          },
+          {
+            "$ref": "#/parameters/Verbose"
+          },
+          {
+            "$ref": "#/parameters/ShowAllIntents"
+          },
+          {
+            "$ref": "#/parameters/Log"
+          },
+          {
+            "$ref": "#/parameters/PredictionRequest"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "The prediction for the supplied query",
+            "schema": {
+              "$ref": "#/definitions/PredictionResponse"
+            }
+          },
+          "default": {
+            "description": "unexpected error",
+            "schema": {
+              "$ref": "#/definitions/Error"
+            }
+          }
+        },
+        "produces": [
+          "application/json"
+        ],
+        "x-ms-examples": {
+          "Successful Get Slot Predictions From Endpoint Via Post request": {
+            "$ref": "./examples/prediction/SuccessfulGetSlotPredictionsFromEndpointViaPostRequest.json"
+          }
+        }
+      }
+    }
+  },
+  "definitions": {
+    "PredictionRequest": {
+      "type": "object",
+      "description": "Represents the prediction request parameters.",
+      "required": [
+        "query"
+      ],
+      "properties": {
+        "query": {
+          "description": "The query to predict",
+          "type": "string"
+        },
+        "options": {
+          "description": "The custom options defined for this request.",
+          "$ref": "#/definitions/PredictionRequestOptions"
+        },
+        "externalEntities": {
+          "description": "The externally predicted entities for this request",
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/ExternalEntity"
+          }
+        },
+        "dynamicLists": {
+          "description": "The dynamically created list entities for this request",
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/DynamicList"
+          }
+        }
+      }
+    },
+    "PredictionRequestOptions": {
+      "type": "object",
+      "description": "The custom options for the prediction request.",
+      "properties": {
+        "datetimeReference": {
+          "type": "string",
+          "format": "date-time",
+          "description": "The reference DateTime used for predicting datetime entities."
+        },
+        "overridePredictions": {
+          "type": "boolean",
+          "description": "Whether to make the external entities resolution override the predictions if an overlap occurs."
+        }
+      }
+    },
+    "PredictionResponse": {
+      "type": "object",
+      "description": "Represents the prediction response.",
+      "required": [
+        "query",
+        "prediction"
+      ],
+      "properties": {
+        "query": {
+          "type": "string",
+          "description": "The query used in the prediction."
+        },
+        "prediction": {
+          "description": "The prediction of the requested query.",
+          "$ref": "#/definitions/Prediction"
+        }
+      }
+    },
+    "Prediction": {
+      "type": "object",
+      "description": "Represents the prediction of a query.",
+      "required": [
+        "normalizedQuery",
+        "topIntent",
+        "intents",
+        "entities"
+      ],
+      "properties": {
+        "normalizedQuery": {
+          "type": "string",
+          "description": "The query after pre-processing and normalization."
+        },
+        "alteredQuery": {
+          "type": "string",
+          "description": "The query after spell checking. Only set if spell check was enabled and a spelling mistake was found."
+        },
+        "topIntent": {
+          "type": "string",
+          "description": "The name of the top scoring intent."
+        },
+        "intents": {
+          "type": "object",
+          "description": "A dictionary representing the intents that fired.",
+          "additionalProperties": {
+            "$ref": "#/definitions/Intent"
+          }
+        },
+        "entities": {
+          "type": "object",
+          "description": "The dictionary representing the entities that fired.",
+          "additionalProperties": {}
+        },
+        "sentiment": {
+          "description": "The result of the sentiment analysis.",
+          "$ref": "#/definitions/Sentiment"
+        }
+      }
+    },
+    "Intent": {
+      "type": "object",
+      "description": "Represents an intent prediction.",
+      "properties": {
+        "score": {
+          "type": "number",
+          "description": "The score of the fired intent."
+        },
+        "childApp": {
+          "description": "The prediction of the dispatched application.",
+          "$ref": "#/definitions/Prediction"
+        }
+      }
+    },
+    "Sentiment": {
+      "type": "object",
+      "description": "The result of the sentiment analaysis.",
+      "required": [
+        "score"
+      ],
+      "properties": {
+        "score": {
+          "type": "number",
+          "description": "The sentiment score of the query."
+        },
+        "label": {
+          "type": "string",
+          "description": "The label of the sentiment analysis result."
+        }
+      }
+    },
+    "ExternalEntity": {
+      "type": "object",
+      "description": "Defines a user perdicted entity that extends an already existing one.",
+      "required": [
+        "entityName",
+        "startIndex",
+        "entityLength"
+      ],
+      "properties": {
+        "entityName": {
+          "type": "string",
+          "description": "The name of the entity to extend."
+        },
+        "startIndex": {
+          "type": "integer",
+          "description": "The start character index of the predicted entity."
+        },
+        "entityLength": {
+          "type": "integer",
+          "description": "The length of the predicted entity."
+        },
+        "resolution": {
+          "description": "A user supplied custom resolution to return as the entity's prediction."
+        }
+      }
+    },
+    "DynamicList": {
+      "type": "object",
+      "description": "Defines an extension for a list entity.",
+      "required": [
+        "listEntityName",
+        "requestLists"
+      ],
+      "properties": {
+        "listEntityName": {
+          "type": "string",
+          "description": "The name of the list entity to extend."
+        },
+        "requestLists": {
+          "type": "array",
+          "description": "The lists to append on the extended list entity.",
+          "items": {
+            "$ref": "#/definitions/RequestList"
+          }
+        }
+      }
+    },
+    "RequestList": {
+      "type": "object",
+      "description": "Defines a sub-list to append to an existing list entity.",
+      "required": [
+        "canonicalForm"
+      ],
+      "properties": {
+        "name": {
+          "type": "string",
+          "description": "The name of the sub-list."
+        },
+        "canonicalForm": {
+          "type": "string",
+          "description": "The canonical form of the sub-list."
+        },
+        "synonyms": {
+          "type": "array",
+          "description": "The synonyms of the canonical form.",
+          "items": {
+            "type": "string"
+          }
+        }
+      }
+    },
+    "Error": {
+      "type": "object",
+      "description": "Represents the error that occurred.",
+      "required": [
+        "error"
+      ],
+      "properties": {
+        "error": {
+          "$ref": "#/definitions/ErrorBody"
+        }
+      }
+    },
+    "ErrorBody": {
+      "type": "object",
+      "description": "Represents the definition of the error that occurred.",
+      "required": [
+        "code",
+        "message"
+      ],
+      "properties": {
+        "code": {
+          "type": "string",
+          "description": "The error code."
+        },
+        "message": {
+          "type": "string",
+          "description": "The error message."
+        }
+      }
+    }
+  },
+  "parameters": {
+    "AppIdInPath": {
+      "name": "appId",
+      "in": "path",
+      "required": true,
+      "type": "string",
+      "format": "uuid",
+      "description": "The application ID.",
+      "x-ms-parameter-location": "method"
+    },
+    "VersionIdInPath": {
+      "name": "versionId",
+      "in": "path",
+      "description": "The application version ID.",
+      "required": true,
+      "type": "string",
+      "x-ms-parameter-location": "method"
+    },
+    "SlotNameInPath": {
+      "name": "slotName",
+      "in": "path",
+      "description": "The application slot name.",
+      "required": true,
+      "type": "string",
+      "x-ms-parameter-location": "method"
+    },
+    "Query": {
+      "name": "query",
+      "in": "query",
+      "description": "The query to predict.",
+      "required": true,
+      "type": "string",
+      "x-ms-parameter-location": "method"
+    },
+    "Verbose": {
+      "name": "verbose",
+      "in": "query",
+      "description": "Indicates whether to get extra metadata for the entities predictions or not.",
+      "type": "boolean",
+      "x-ms-parameter-location": "method"
+    },
+    "ShowAllIntents": {
+      "name": "show-all-intents",
+      "in": "query",
+      "description": "Indicates whether to return all the intents in the response or just the top intent.",
+      "type": "boolean",
+      "x-ms-parameter-location": "method"
+    },
+    "Log": {
+      "name": "log",
+      "in": "query",
+      "description": "Indicates whether to log the endpoint query or not.",
+      "type": "boolean",
+      "x-ms-parameter-location": "method"
+    },
+    "PredictionRequest": {
+      "name": "predictionRequest",
+      "in": "body",
+      "description": "The prediction request parameters.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/PredictionRequest"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "Endpoint": {
+      "name": "Endpoint",
+      "description": "Supported Cognitive Services endpoints (protocol and hostname, for example: https://westus.api.cognitive.microsoft.com).",
+      "x-ms-parameter-location": "client",
+      "required": true,
+      "type": "string",
+      "in": "path",
+      "x-ms-skip-url-encoding": true
+    }
+  }
+}
\ No newline at end of file
diff --git a/specification/cognitiveservices/data-plane/LUIS/Runtime/preview/v3.0/examples/prediction/SuccessfulGetSlotPredictionsFromEndpointViaGetRequest.json b/specification/cognitiveservices/data-plane/LUIS/Runtime/preview/v3.0/examples/prediction/SuccessfulGetSlotPredictionsFromEndpointViaGetRequest.json
new file mode 100644
index 000000000000..3105ad869ad5
--- /dev/null
+++ b/specification/cognitiveservices/data-plane/LUIS/Runtime/preview/v3.0/examples/prediction/SuccessfulGetSlotPredictionsFromEndpointViaGetRequest.json
@@ -0,0 +1,47 @@
+{
+  "parameters": {
+    "Endpoint": "{Endpoint}",
+    "Ocp-Apim-Subscription-Key": "{Subscription Key}",
+    "appId": "{Application Id}",
+    "slotName": "{Slot Name}",
+    "query": "forward to frank 30 dollars through HSBC"
+  },
+  "responses": {
+    "200": {
+      "headers": {},
+      "body": {
+        "query": "forward to frank 30 dollars through HSBC",
+        "prediction": {
+          "normalizedQuery": "forward to frank 30 dollars through hsbc",
+          "topIntent": "give",
+          "intents": {
+            "give": {
+              "score": 0.943442
+            }
+          },
+          "entities": {
+            "frank": [
+              "frank"
+            ],
+            "number": [
+              30
+            ],
+            "money": [
+              {
+                "unit": "Dollar",
+                "value": 30
+              }
+            ],
+            "Bank": [
+              "HSBC"
+            ]
+          },
+          "sentiment": {
+            "label": "positive",
+            "score": 0.9163064
+          }
+        }
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/specification/cognitiveservices/data-plane/LUIS/Runtime/preview/v3.0/examples/prediction/SuccessfulGetSlotPredictionsFromEndpointViaPostRequest.json b/specification/cognitiveservices/data-plane/LUIS/Runtime/preview/v3.0/examples/prediction/SuccessfulGetSlotPredictionsFromEndpointViaPostRequest.json
new file mode 100644
index 000000000000..d9fe1dca2d4f
--- /dev/null
+++ b/specification/cognitiveservices/data-plane/LUIS/Runtime/preview/v3.0/examples/prediction/SuccessfulGetSlotPredictionsFromEndpointViaPostRequest.json
@@ -0,0 +1,76 @@
+{
+  "parameters": {
+    "Endpoint": "{Endpoint}",
+    "Ocp-Apim-Subscription-Key": "{Subscription Key}",
+    "appId": "{Application Id}",
+    "slotName": "{Slot Name}",
+    "predictionRequest": {
+      "query": "forward to frank 30 dollars through HSBC",
+      "options": {
+        "datetimeReference": "2015-02-13T13:15:00"
+      },
+      "externalEntities": [
+        {
+          "entityName": "Bank",
+          "startIndex": 36,
+          "entityLength": 4,
+          "resolution": {
+            "text": "International Bank"
+          }
+        }
+      ],
+      "dynamicLists": [
+        {
+          "listEntityName": "Employees",
+          "requestLists": [
+            {
+              "name": "Management",
+              "canonicalForm": "Frank",
+              "synonyms": []
+            }
+          ]
+        }
+      ]
+    }
+  },
+  "responses": {
+    "200": {
+      "headers": {},
+      "body": {
+        "query": "forward to frank 30 dollars through HSBC",
+        "prediction": {
+          "normalizedQuery": "forward to frank 30 dollars through hsbc",
+          "topIntent": "give",
+          "intents": {
+            "give": {
+              "score": 0.943442
+            }
+          },
+          "entities": {
+            "Employees": [
+              [ "frank" ]
+            ],
+            "number": [
+              30
+            ],
+            "money": [
+              {
+                "unit": "Dollar",
+                "value": 30
+              }
+            ],
+            "Bank": [
+              {
+                "text": "International Bank"
+              }
+            ]
+          },
+          "sentiment": {
+            "label": "positive",
+            "score": 0.9163064
+          }
+        }
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/specification/cognitiveservices/data-plane/LUIS/Runtime/preview/v3.0/examples/prediction/SuccessfulGetVersionPredictionsFromEndpointViaGetRequest.json b/specification/cognitiveservices/data-plane/LUIS/Runtime/preview/v3.0/examples/prediction/SuccessfulGetVersionPredictionsFromEndpointViaGetRequest.json
new file mode 100644
index 000000000000..2a930ca9fa8f
--- /dev/null
+++ b/specification/cognitiveservices/data-plane/LUIS/Runtime/preview/v3.0/examples/prediction/SuccessfulGetVersionPredictionsFromEndpointViaGetRequest.json
@@ -0,0 +1,49 @@
+{
+  "parameters": {
+    "Endpoint": "{Endpoint}",
+    "Ocp-Apim-Subscription-Key": "{Subscription Key}",
+    "appId": "{Application Id}",
+    "versionId": "{Version Id}",
+    "query": "forward to frank 30 dollars through HSBC"
+  },
+  "responses": {
+    "200": {
+      "headers": {},
+      "body": {
+        "query": "forward to frank 30 dollars through HSBC",
+        "prediction": {
+          "normalizedQuery": "forward to frank 30 dollars through hsbc",
+          "topIntent": "give",
+          "intents": {
+            "give": {
+              "score": 0.943442
+            }
+          },
+          "entities": {
+            "Employees": [
+              [ "frank" ]
+            ],
+            "number": [
+              30
+            ],
+            "money": [
+              {
+                "unit": "Dollar",
+                "value": 30
+              }
+            ],
+            "Bank": [
+              {
+                "text": "International Bank"
+              }
+            ]
+          },
+          "sentiment": {
+            "label": "positive",
+            "score": 0.9163064
+          }
+        }
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/specification/cognitiveservices/data-plane/LUIS/Runtime/preview/v3.0/examples/prediction/SuccessfulGetVersionPredictionsFromEndpointViaPostRequest.json b/specification/cognitiveservices/data-plane/LUIS/Runtime/preview/v3.0/examples/prediction/SuccessfulGetVersionPredictionsFromEndpointViaPostRequest.json
new file mode 100644
index 000000000000..4188b3e2345c
--- /dev/null
+++ b/specification/cognitiveservices/data-plane/LUIS/Runtime/preview/v3.0/examples/prediction/SuccessfulGetVersionPredictionsFromEndpointViaPostRequest.json
@@ -0,0 +1,76 @@
+{
+  "parameters": {
+    "Endpoint": "{Endpoint}",
+    "Ocp-Apim-Subscription-Key": "{Subscription Key}",
+    "appId": "{Application Id}",
+    "versionId": "{Version Id}",
+    "predictionRequest": {
+      "query": "forward to frank 30 dollars through HSBC",
+      "options": {
+        "datetimeReference": "2015-02-13T13:15:00"
+      },
+      "externalEntities": [
+        {
+          "entityName": "Bank",
+          "startIndex": 36,
+          "entityLength": 4,
+          "resolution": {
+            "text": "International Bank"
+          }
+        }
+      ],
+      "dynamicLists": [
+        {
+          "listEntityName": "Employees",
+          "requestLists": [
+            {
+              "name": "Management",
+              "canonicalForm": "Frank",
+              "synonyms": []
+            }
+          ]
+        }
+      ]
+    }
+  },
+  "responses": {
+    "200": {
+      "headers": {},
+      "body": {
+        "query": "forward to frank 30 dollars through HSBC",
+        "prediction": {
+          "normalizedQuery": "forward to frank 30 dollars through hsbc",
+          "topIntent": "give",
+          "intents": {
+            "give": {
+              "score": 0.943442
+            }
+          },
+          "entities": {
+            "Employees": [
+              [ "frank" ]
+            ],
+            "number": [
+              30
+            ],
+            "money": [
+              {
+                "unit": "Dollar",
+                "value": 30
+              }
+            ],
+            "Bank": [
+              {
+                "text": "International Bank"
+              }
+            ]
+          },
+          "sentiment": {
+            "label": "positive",
+            "score": 0.9163064
+          }
+        }
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/specification/cognitiveservices/data-plane/LUIS/Runtime/readme.go.md b/specification/cognitiveservices/data-plane/LUIS/Runtime/readme.go.md
index 810dbbba0f0b..ca2fd7b2b082 100644
--- a/specification/cognitiveservices/data-plane/LUIS/Runtime/readme.go.md
+++ b/specification/cognitiveservices/data-plane/LUIS/Runtime/readme.go.md
@@ -23,4 +23,13 @@ Please also specify `--go-sdk-folder=<path to the root directory of your azure-s
 
 ``` yaml $(tag) == 'runtime_2_0' && $(go)
 output-folder: $(go-sdk-folder)/services/cognitiveservices/v2.0/luis/$(namespace)
+```
+
+### Tag: runtime_3_0_preview and go
+
+These settings apply only when `--tag=runtime_3_0_preview --go` is specified on the command line.
+Please also specify `--go-sdk-folder=<path to the root directory of your azure-sdk-for-go clone>`.
+
+``` yaml $(tag) == 'runtime_3_0_preview' && $(go)
+output-folder: $(go-sdk-folder)/services/cognitiveservices/v3.0-preview/luis/$(namespace)
 ```
\ No newline at end of file
diff --git a/specification/cognitiveservices/data-plane/LUIS/Runtime/readme.md b/specification/cognitiveservices/data-plane/LUIS/Runtime/readme.md
index 2ffe8859e39a..4e421b6bea24 100644
--- a/specification/cognitiveservices/data-plane/LUIS/Runtime/readme.md
+++ b/specification/cognitiveservices/data-plane/LUIS/Runtime/readme.md
@@ -25,6 +25,18 @@ directive:
   remove-operation: Prediction_Resolve2
 ```
 
+## Runtime 3.0-preview
+These settings apply only when `--tag=runtime_3_0_preview` is specified on the command line.
+
+``` yaml $(tag) == 'runtime_3_0_preview'
+input-file: preview/v3.0/LUIS-Runtime.json
+
+# remove the GET APIs from code-generation (since the POST and GET operations are functionally identical)
+directive:
+  - remove-operation: Prediction_GetSlotPredictionGET
+  - remove-operation: Prediction_GetVersionPredictionGET
+```
+
 ---
 # Code Generation