diff --git a/package.json b/package.json
index 4dd8390..f5a06a7 100644
--- a/package.json
+++ b/package.json
@@ -112,27 +112,6 @@
 					"order": -1,
 					"markdownDescription": "Specify the properties for openai provider."
 				},
-				"devchat.Provider.anthropic": {
-					"type": "object",
-					"properties": {
-						"access_key": {
-							"type": "string",
-							"default": "",
-							"description": "[required*] Specify access key for selected provider."
-						},
-						"api_base": {
-							"type": "string",
-							"default": "",
-							"description": "[optional*] Specify the api base for selected provider. Leave it blank if you want to use default api base."
-						}
-					},
-					"required": [
-						"access_key"
-					],
-					"additionalProperties": false,
-					"order": -1,
-					"markdownDescription": "Specify the properties for anthropic provider."
-				},
 				"devchat.Model.gpt-3-5": {
 					"type": "object",
 					"properties": {
@@ -259,8 +238,7 @@
 							"type": "string",
 							"default": "devchat",
 							"enum": [
-								"devchat",
-								"anthropic"
+								"devchat"
 							],
 							"description": "[required*] which provider host this llm model"
 						},
@@ -524,11 +502,6 @@
 				"title": "Input OpenAI API Key",
 				"category": "DevChat"
 			},
-			{
-				"command": "DevChat.AccessKey.Anthropic",
-				"title": "Input Anthropic API Key",
-				"category": "DevChat"
-			},
 			{
 				"command": "DevChat.AccessKey.DevChat",
 				"title": "Input DevChat Access Key",
diff --git a/src/contributes/commandsBase.ts b/src/contributes/commandsBase.ts
index 520ec57..d55a496 100644
--- a/src/contributes/commandsBase.ts
+++ b/src/contributes/commandsBase.ts
@@ -14,7 +14,7 @@ export function checkDevChatDependency(showError: boolean = true): boolean {
 
 	try {
 		// Check if DevChat is installed
-		const expectVersion = 'DevChat 0.2.7';
+		const expectVersion = 'DevChat 0.2.8';
 		const devchatVersion = runCommand(`"${devChat}" --version`).toString().trim();
 		if (devchatVersion < expectVersion) {
 			logger.channel()?.info(`devchat version: ${devchatVersion}, but expect version: ${expectVersion}`);
diff --git a/src/handler/regValidModelList.ts b/src/handler/regValidModelList.ts
index 7947472..b00d065 100644
--- a/src/handler/regValidModelList.ts
+++ b/src/handler/regValidModelList.ts
@@ -6,120 +6,10 @@ import { ApiKeyManager } from '../util/apiKey';
 import { UiUtilWrapper } from '../util/uiUtil';
 
 
-export async function getValidModels(): Promise<string[]> {
-	const modelProperties = async (modelPropertyName: string, modelName: string) => {
-		const modelConfig = UiUtilWrapper.getConfiguration("devchat", modelPropertyName);
-		if (!modelConfig) {
-			return undefined;
-		}
-
-		let modelProperties: any = {};
-		for (const key of Object.keys(modelConfig || {})) {
-			const property = modelConfig![key];
-			modelProperties[key] = property;
-		}
-		if (!modelConfig["provider"]) {
-			return undefined;
-		}
-		const providerProperty = "Provider." + modelConfig["provider"];
-		const providerConfig = UiUtilWrapper.getConfiguration("devchat", providerProperty);
-		if (providerConfig) {
-			if (providerConfig["access_key"]) {
-				modelProperties["api_key"] = providerConfig["access_key"];
-			}
-			if (providerConfig["api_base"]) {
-				modelProperties["api_base"] = providerConfig["api_base"];
-			}
-		}
-		
-		if (!modelProperties["api_key"]) {
-			const providerName = ApiKeyManager.toProviderKey(modelConfig["provider"]);
-			if (!providerName) {
-				return undefined;
-			}
-			let apiKey = await ApiKeyManager.loadApiKeySecret(providerName);
-			if (!apiKey) {
-				apiKey = await ApiKeyManager.loadApiKeySecret("DevChat");
-				if (!apiKey) {
-					return undefined;
-				}
-			}
-			modelProperties["api_key"] = apiKey;
-		}
-
-		modelProperties['model'] = modelName;
-		return modelProperties;
-	};
-
-	let modelList : string[] = [];
-	const openaiModel = await modelProperties('Model.gpt-3-5', "gpt-3.5-turbo");
-	if (openaiModel) {
-		modelList.push(openaiModel.model);
-	}
-	const openaiModel2 = await modelProperties('Model.gpt-3-5-16k', "gpt-3.5-turbo-16k");
-	if (openaiModel2) {
-		modelList.push(openaiModel2.model);
-	}
-	const openaiModel3 = await modelProperties('Model.gpt-4', "gpt-4");
-	if (openaiModel3) {
-		modelList.push(openaiModel3.model);
-	}
-	const claudeModel = await modelProperties('Model.claude-2', "claude-2");
-	if (claudeModel) {
-		modelList.push(claudeModel.model);
-	}
-	const xinghuoModel = await modelProperties('Model.xinghuo-2', "xinghuo-2");
-	if (xinghuoModel) {
-		modelList.push(xinghuoModel.model);
-	}
-	const glmModel = await modelProperties('Model.chatglm_pro', "chatglm_pro");
-	if (glmModel) {
-		modelList.push(glmModel.model);
-	}
-	const erniebotModel = await modelProperties('Model.ERNIE-Bot', "ERNIE-Bot");
-	if (erniebotModel) {
-		modelList.push(erniebotModel.model);
-	}
-	const llama2Model = await modelProperties('Model.llama-2-13b-chat', "llama-2-13b-chat");
-	if (llama2Model) {
-		modelList.push(llama2Model.model);
-	}
-	
-	const customModelConfig: any = UiUtilWrapper.getConfiguration('devchat', 'customModel');
-	if (!customModelConfig) {
-		return modelList;
-	}
-
-	const customModels = customModelConfig as Array<any>;
-	for (const model of customModels) {
-		if (!model.model) {
-			continue;
-		}
-
-		const modelProvider = model["model"].split('/')[0];
-		const modelName = model["model"].split('/').slice(1).join('/');
-
-		if (!model["api_key"]) {
-			const providerName = ApiKeyManager.toProviderKey(modelProvider);
-			if (!providerName) {
-				continue;
-			}
-			const apiKey = await ApiKeyManager.loadApiKeySecret(providerName);
-			if (!apiKey) {
-				continue;
-			}
-		}
-
-		modelList.push(model["model"]);
-	}
-
-	return modelList;
-}
-
 regInMessage({command: 'regModelList'});
 regOutMessage({command: 'regModelList', result: [{name: ''}]});
 export async function regModelList(message: any, panel: vscode.WebviewPanel|vscode.WebviewView): Promise<void> {
-	const modelList = await getValidModels();
+	const modelList = await ApiKeyManager.getValidModels();
 	
 	MessageHandler.sendMessage(panel, { command: 'regModelList', result: modelList });
 	return;
diff --git a/src/util/apiKey.ts b/src/util/apiKey.ts
index ebaa489..c389be0 100644
--- a/src/util/apiKey.ts
+++ b/src/util/apiKey.ts
@@ -30,10 +30,126 @@ export class ApiKeyManager {
 		return llmModelT.api_key;
 	}
 
+	static async getValidModels(): Promise<string[]> {
+		const modelProperties = async (modelPropertyName: string, modelName: string) => {
+			const modelConfig = UiUtilWrapper.getConfiguration("devchat", modelPropertyName);
+			if (!modelConfig) {
+				return undefined;
+			}
+	
+			let modelProperties: any = {};
+			for (const key of Object.keys(modelConfig || {})) {
+				const property = modelConfig![key];
+				modelProperties[key] = property;
+			}
+			if (!modelConfig["provider"]) {
+				return undefined;
+			}
+			const providerProperty = "Provider." + modelConfig["provider"];
+			const providerConfig = UiUtilWrapper.getConfiguration("devchat", providerProperty);
+			if (providerConfig) {
+				if (providerConfig["access_key"]) {
+					modelProperties["api_key"] = providerConfig["access_key"];
+				}
+				if (providerConfig["api_base"]) {
+					modelProperties["api_base"] = providerConfig["api_base"];
+				}
+			}
+			
+			if (!modelProperties["api_key"]) {
+				const providerName = ApiKeyManager.toProviderKey(modelConfig["provider"]);
+				if (!providerName) {
+					return undefined;
+				}
+				let apiKey = await ApiKeyManager.loadApiKeySecret(providerName);
+				if (!apiKey) {
+					apiKey = await ApiKeyManager.loadApiKeySecret("DevChat");
+					if (!apiKey) {
+						return undefined;
+					}
+				}
+				modelProperties["api_key"] = apiKey;
+			}
+	
+			modelProperties['model'] = modelName;
+			return modelProperties;
+		};
+	
+		let modelList : string[] = [];
+		const openaiModel = await modelProperties('Model.gpt-3-5', "gpt-3.5-turbo");
+		if (openaiModel) {
+			modelList.push(openaiModel.model);
+		}
+		const openaiModel2 = await modelProperties('Model.gpt-3-5-16k', "gpt-3.5-turbo-16k");
+		if (openaiModel2) {
+			modelList.push(openaiModel2.model);
+		}
+		const openaiModel3 = await modelProperties('Model.gpt-4', "gpt-4");
+		if (openaiModel3) {
+			modelList.push(openaiModel3.model);
+		}
+		const claudeModel = await modelProperties('Model.claude-2', "claude-2");
+		if (claudeModel) {
+			modelList.push(claudeModel.model);
+		}
+		const xinghuoModel = await modelProperties('Model.xinghuo-2', "xinghuo-2");
+		if (xinghuoModel) {
+			modelList.push(xinghuoModel.model);
+		}
+		const glmModel = await modelProperties('Model.chatglm_pro', "chatglm_pro");
+		if (glmModel) {
+			modelList.push(glmModel.model);
+		}
+		const erniebotModel = await modelProperties('Model.ERNIE-Bot', "ERNIE-Bot");
+		if (erniebotModel) {
+			modelList.push(erniebotModel.model);
+		}
+		const llama2Model = await modelProperties('Model.llama-2-13b-chat', "llama-2-13b-chat");
+		if (llama2Model) {
+			modelList.push(llama2Model.model);
+		}
+		
+		const customModelConfig: any = UiUtilWrapper.getConfiguration('devchat', 'customModel');
+		if (!customModelConfig) {
+			return modelList;
+		}
+	
+		const customModels = customModelConfig as Array<any>;
+		for (const model of customModels) {
+			if (!model.model) {
+				continue;
+			}
+	
+			const modelProvider = model["model"].split('/')[0];
+			const modelName = model["model"].split('/').slice(1).join('/');
+	
+			if (!model["api_key"]) {
+				const providerName = ApiKeyManager.toProviderKey(modelProvider);
+				if (!providerName) {
+					continue;
+				}
+				const apiKey = await ApiKeyManager.loadApiKeySecret(providerName);
+				if (!apiKey) {
+					continue;
+				}
+			}
+	
+			modelList.push(model["model"]);
+		}
+	
+		return modelList;
+	}
+
 	static async llmModel() {
-		const llmModelT = UiUtilWrapper.getConfiguration('devchat', 'defaultModel');
+		let llmModelT = UiUtilWrapper.getConfiguration('devchat', 'defaultModel');
 		if (!llmModelT) {
-			return undefined;
+			const validModels = await this.getValidModels();
+			if (validModels.length > 0) {
+				await UiUtilWrapper.updateConfiguration('devchat', 'defaultModel', validModels[0]);
+				llmModelT = validModels[0];
+			} else {
+				return undefined;
+			}
 		}
 
 		const modelProperties = async (modelPropertyName: string, modelName: string) => {